General Information
Primary Commodities: gold, silver
Secondary Commodities: lead, copper, zinc, antimony
Deposit Type(s): Epithermal Au-Ag-Cu: High Sulphidation
Location(s): 62.048340 N, -137.124050 W
NTS Mapsheet(s): 115I03
Location Comments: Location provided by Rockhaven Resources 2019
Hand Samples Available at YGS: Yes
Capsule
Work History
Staked as Big Thing claim (4329) and others, in 1943 by A. Brown and G. McDade, who sold the property in 1945 to Yukon Northwest Exploration Ltd. (Leitch Gold Mines Ltd.), which explored with trenching and drilling in 1946. The property was then transferred to Brown-McDade Mines Ltd., which developed the vein with 609 m of crosscutting and drifting in 1947. G.F. Dickson added Dome cl 1-7 (73538) to the west in 1958 and April 1962 and optioned them to Mount Nansen Mines Ltd. in March 1963. Control of the Brown-McDade property was acquired by Peso Silver Mines Ltd. in July 1964 and transferred to a subsidiary, Mount Nansen Mines Ltd, in 1965. Mount Nansen explored with 552 m underground drilling in 1966 and 216 m of underground development in 1967.
In 1968, Peso sold its control of Brown-McDade Mines Ltd. to Charter Oil Company Ltd. (controlled by Canadawide Investments Ltd.). Peso regained control of the Brown-McDade claims in 1978, changed its name to Rex Silver Mines Ltd. in 1979, and sold its interest in 1981 to a private syndicate. The syndicate tied on DD cl 1-66 (YA59596) to the south and east in February 1981 and transferred its interest in 1984 to a new company, BYG Natural Resources Inc.
Chevron Canada Resources Ltd. optioned the property from BYG in June 1985 and explored with soil geochemistry, EM-16 surveys, 3,717 m of excavator trenching, 1,234 m of percussion drilling (17 holes) and 638 m of diamond drilling (6 holes) in 1985; EM-16, horizontal loop and magnetic surveys, plus 3,715 m of excavator trenching and one diamond drill hole (172 m) in 1987. BYG entered into a sub-option agreement with Chevron in 1988 and drilled 75 diamond drill holes totaling 5,077 m. Metallurgical testing was done on oxidized and sulphide-bearing mineralization to determine its amenability to cyanidization. A historical resource estimate was undertaken in 1989 (not NI 43-101 compliant). In 1989, five shallow holes were drilled for soil tests on the proposed tailings dam site.
In November 1993, Gestion S.R.C. Inc. entered a letter of intent to acquire a 50% interest in the property by providing the capital and management to put the property into production, beginning with the Brown-McDade deposit. This deal did not proceed and in April 1994 BYG made an agreement with J. Malcolm Slack and Associates, a company comprised of former Noranda executives.
During the summer of 1994, BYG. drilled 6 holes (748 m) on the Brown-McDade property and 6 holes (241 m) on the neighboring Mount Nansen property (MINFILE occurrence 115I 065). In addition, the company carried out a topographic survey, geotechnical drilling (46 m) and a tailing storage study. The company also rehabilitated one of the water wells on Victoria Creek.
In 1995, BYG continued exploration and development work on their Mount Nansen Project. In preparation for mine production, BYG carried out road construction, tailings dam stripping and construction and rehabilitation of mill and mine buildings. BYG also applied for various mining permits and licenses. In April 1996, BYG received their Class A water license which allowed them to begin mining operations. Mining began on the oxidized portion of the Brown-McDade zone and the first gold-silver bar was poured in November 1996. Production rates at the end of 1996 reached 500 tonnes/day.
BYG continued mining the Brown-McDade deposit in 1997. A SAG mill was installed and commissioned in late August to replace the crushing and screening circuit. Production for 1997 totaled 617 kg (19,829 ounces) of Au and 3,068 kg Ag (98,654 ounces). The mine shut down in November 1997 to upgrade the water treatment system. The mine resumed limited production in January 1998 and full production in June 1998. In 1998, BYG recovered 472 kg (15,190 ounces) Au and 1,208 kg (38,849 ounces) Ag. Mining was suspended at the beginning of 1999 due to environmental problems and it became a Type II Minesite.
A 43-101 technical report by Middleton, 2009, summarizes the Mount Nansen and Tawa properties.
In 2019, the Yukon Supreme Court approved the sale of the Mount Nansen minesite, including the Brown-McDade occurrence, to a 50/50 joint venture of Alexco Environmental and JDS Group called the Mount Nansen Remediation Limited Partnership (MNLRP). The project will include engineering, permitting, care and maintenance and remediation (jdsmining.ca).
Regional & Property Geology
The Brown-McDade deposit is part of the Mount Nansen mine area, which is located in the Dawson Range within the Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississipian metamorphic rocks separated into meta-sedimentary and meta-igneous suites (Stroshein, 1998). The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite of the Nasina Assemblage with local metamorphosed carbonate noted in the Brown-McDade open pit. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite. These two metamorphic suites have been intruded by foliated Upper Triassic and weakly foliated Jurassic diorite, granodiorite and syenite plutons (Stroshein, 1998). In the Mount Nansen area, the Triassic to Jurassic plutons in the area are intruded by younger, mid-Cretaceous felsic plutonic rocks of the Coffee Creek Plutonic Suite and capped by the Mount Nansen Volcanic Suite coeval magic to intermediate volcanic and tuff rocks (Stroshein, 1998; Johnstone & Mortensen, 1994). Sub-volcanic feldspar porphyry dykes intrude all rock types in the area (Stroshein, 1998; Sawyer & Dickinson, 1976).
A sub-volcanic porphyry intrusive complex of the Mount Nansen Volcanic Suite occurs in the centre of the Mount Nansen property that forms an east-west zone 3.2 km long by 1.6 km wide. This complex is host to disseminated copper-molybdenum mineralization in porphyritic dykes, plugs and breccia bodies. Widespread propylitic alteration from this complex has altered the majority of rocks in the Mount Nansen area, including the Brown-McDade deposit which contains epidote, calcite, pyrite and magnetite replacement of hornblende (Stroshein, 1998; Sawyer & Dickinson, 1976).
Mining at the Brown-McDade open pit has exposed two separate and distinct deposit types. The first type is gold-silver vein mineralization hosted by a massive feldspar porphyry dyke. These fine-grained quartz-sulfide veins and breccia are enclosed by silicified and/or intensely clay-altered brecciated feldspar porphyry. The feldspar porphyry dyke has intruded along an igneous-metamorphic contact that has been mined over a strike length of 50 m in the southern portion of the pit. The second deposit type that occurs at the north end of the pit consists of a siliceous, sulphide-rich breccia in a pipe-like structure hosted by metamorphosed carbonate and clastic rocks of the Nasina Assemblage (Paleozoic). The pipe is elongate in plan with a high-grade core approximately 15 m wide and 25 m long surrounded by a low-grade envelope consisting of quartz-sulphide stringers in a silicified breccia. The deposits are separated by a northeast-striking fault which truncates and offsets the main vein-dyke mineralization.
Mineralization & Results
The ore at the Brown-McDade deposit is composed of fine-grained quartz and sulphides in narrow veins or as a matrix to a breccia of silicified and pyritized wall rock fragments. Unoxidized ore contains dark grey silica and pyrite, arsenopyrite, sphalerite, galena, sulphostalts, bornite, stibnite and chalcopyrite. Gold is genetically related to the pyrite phase of the mineralization and occurs as 5 to 50 micron-sized inclusions in pyrite grains. Oxidation of sulphide minerals extends to depths of up to 70 m and a large portion of the gold grains have been exposed by oxidation of the sulphides and post-depositional cataclastic fractures in the pyrite. The silver mineralogy is not as well understood but appears to be related to the base metal sulphide mineralization.
The 1985 exploration showed that haloes of lower grade mineralization and argillic alteration surround the high grade veins. The widest trench intersection (Trench 4) assayed 5.76 g/t Au and 63.1 g/t Ag across 22.0 m, while the highest grade (Trench 9) was 72.3 g/t Au and 79.2 g/t Ag across 6.0 m. The best drill intersection was 11.8 g/t Au and 83.0 g/t Ag across a true width of 19.6 m from Hole 85-4.
The 1986 work, which tested the northern and southern extensions of the Brown-McDade Zone, yielded disappointing results. The 1987 and 1988 work increased the density of holes in the main zone and tested it at depth. Proved open pit reserves (oxide) consist of 124,606 tonnes grading 10.42 g/t Au and 98 g/t Ag and probable underground reserves (sulphide) are 193,706 tonnes grading 14.47 g/t Au and 100 g/t Ag.
The six 1994 drill holes provided infill information to provide an updated reserve estimate for the Brown-McDade deposit. The holes typically returned lower grades and widths of mineralization than those obtained in many of the previous drilled adjacent holes. However, by design, many of the 1994 holes were drilled along the margins of the mineralized shoots where significantly lower grades and narrower widths would be encountered.
During road construction in 1996, BYG discovered a vein system parallel to the Brown-McDade zone. The vein is located within a geochemical anomaly which strikes northwest. The vein runs sub-parallel to the Brown-McDade vein and assayed 17.6 and 9.5 g/t Au equivalent over 3.05 m in trenches located 60 metres apart.
The 1996 geophysical programs were carried out over two grids; (1) the Nisling Lake and (2) the Buffalo. Both grid areas returned numerous, significant VLF-EM and magnetic anomalies, although most of the anomalies were not coincident. Financial problems at BYG prevented the company from following up any of the anomalies.
At the end of 1995 and prior to the commencement of mining published reserves for the Brown-McDade property stood at:
Open Pit - Oxide: 319 000 tonnes grading 5.30 g/t Au and 50 g/t Ag
Underground - Sulphide Ore: 298 000 tonnes grading 6.80 g/t Au and 57 g/t Ag
In 1996, BYG upgraded the on-site mill to 700 tonnes/day and added a carbon-in-pulp cyanide circuit. Previous operators at Mount Nansen were unsuccessful mainly due to poor recoveries. The addition of the cyanide circuit significantly improved recoveries. At the beginning of 1999, mining was suspended due to environmental problems. Ore reserves at the Brown-McDade property were nearly exhausted at the time of suspension.
A 43-101 technical report by Middleton, 2009, summarizes the Mount Nansen and Tawa properties. Resources are quoted for the Brown-McDade as re-calculated by Denholm et al (2000). The total INDICATED resource is listed as 126,100 tonnes grading 6. 2g/t Au and 51 g/t Ag. This appears to be for the underground portion of the No. 1 and 2 veins, and doesn't seem to include the open pittable portion of the resource mentioned earlier in the report. An additional INFERRED resources for the breccia pipe is calculated at 25,000 tonnes grading 10.7 g/t Au and 15 8g/t Ag. The summary table for the whole Mount Nansen project also includes an INDICATED resource for the Brown-McDade ore dump, calculated at 12,000 tonnes grading 5.0 g/t Au and 42 g/t Ag. This resource estimate was not filed with the securities authority and is not NI 43-101 compliant.
Staked as Big Thing claim (4329) and others, in 1943 by A. Brown and G. McDade, who sold the property in 1945 to Yukon Northwest Exploration Ltd. (Leitch Gold Mines Ltd.), which explored with trenching and drilling in 1946. The property was then transferred to Brown-McDade Mines Ltd., which developed the vein with 609 m of crosscutting and drifting in 1947. G.F. Dickson added Dome cl 1-7 (73538) to the west in 1958 and April 1962 and optioned them to Mount Nansen Mines Ltd. in March 1963. Control of the Brown-McDade property was acquired by Peso Silver Mines Ltd. in July 1964 and transferred to a subsidiary, Mount Nansen Mines Ltd, in 1965. Mount Nansen explored with 552 m underground drilling in 1966 and 216 m of underground development in 1967.
In 1968, Peso sold its control of Brown-McDade Mines Ltd. to Charter Oil Company Ltd. (controlled by Canadawide Investments Ltd.). Peso regained control of the Brown-McDade claims in 1978, changed its name to Rex Silver Mines Ltd. in 1979, and sold its interest in 1981 to a private syndicate. The syndicate tied on DD cl 1-66 (YA59596) to the south and east in February 1981 and transferred its interest in 1984 to a new company, BYG Natural Resources Inc.
Chevron Canada Resources Ltd. optioned the property from BYG in June 1985 and explored with soil geochemistry, EM-16 surveys, 3,717 m of excavator trenching, 1,234 m of percussion drilling (17 holes) and 638 m of diamond drilling (6 holes) in 1985; EM-16, horizontal loop and magnetic surveys, plus 3,715 m of excavator trenching and one diamond drill hole (172 m) in 1987. BYG entered into a sub-option agreement with Chevron in 1988 and drilled 75 diamond drill holes totaling 5,077 m. Metallurgical testing was done on oxidized and sulphide-bearing mineralization to determine its amenability to cyanidization. A historical resource estimate was undertaken in 1989 (not NI 43-101 compliant). In 1989, five shallow holes were drilled for soil tests on the proposed tailings dam site.
In November 1993, Gestion S.R.C. Inc. entered a letter of intent to acquire a 50% interest in the property by providing the capital and management to put the property into production, beginning with the Brown-McDade deposit. This deal did not proceed and in April 1994 BYG made an agreement with J. Malcolm Slack and Associates, a company comprised of former Noranda executives.
During the summer of 1994, BYG. drilled 6 holes (748 m) on the Brown-McDade property and 6 holes (241 m) on the neighboring Mount Nansen property (MINFILE occurrence 115I 065). In addition, the company carried out a topographic survey, geotechnical drilling (46 m) and a tailing storage study. The company also rehabilitated one of the water wells on Victoria Creek.
In 1995, BYG continued exploration and development work on their Mount Nansen Project. In preparation for mine production, BYG carried out road construction, tailings dam stripping and construction and rehabilitation of mill and mine buildings. BYG also applied for various mining permits and licenses. In April 1996, BYG received their Class A water license which allowed them to begin mining operations. Mining began on the oxidized portion of the Brown-McDade zone and the first gold-silver bar was poured in November 1996. Production rates at the end of 1996 reached 500 tonnes/day.
BYG continued mining the Brown-McDade deposit in 1997. A SAG mill was installed and commissioned in late August to replace the crushing and screening circuit. Production for 1997 totaled 617 kg (19,829 ounces) of Au and 3,068 kg Ag (98,654 ounces). The mine shut down in November 1997 to upgrade the water treatment system. The mine resumed limited production in January 1998 and full production in June 1998. In 1998, BYG recovered 472 kg (15,190 ounces) Au and 1,208 kg (38,849 ounces) Ag. Mining was suspended at the beginning of 1999 due to environmental problems and it became a Type II Minesite.
A 43-101 technical report by Middleton, 2009, summarizes the Mount Nansen and Tawa properties.
In 2019, the Yukon Supreme Court approved the sale of the Mount Nansen minesite, including the Brown-McDade occurrence, to a 50/50 joint venture of Alexco Environmental and JDS Group called the Mount Nansen Remediation Limited Partnership (MNLRP). The project will include engineering, permitting, care and maintenance and remediation (jdsmining.ca).
Regional & Property Geology
The Brown-McDade deposit is part of the Mount Nansen mine area, which is located in the Dawson Range within the Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississipian metamorphic rocks separated into meta-sedimentary and meta-igneous suites (Stroshein, 1998). The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite of the Nasina Assemblage with local metamorphosed carbonate noted in the Brown-McDade open pit. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite. These two metamorphic suites have been intruded by foliated Upper Triassic and weakly foliated Jurassic diorite, granodiorite and syenite plutons (Stroshein, 1998). In the Mount Nansen area, the Triassic to Jurassic plutons in the area are intruded by younger, mid-Cretaceous felsic plutonic rocks of the Coffee Creek Plutonic Suite and capped by the Mount Nansen Volcanic Suite coeval magic to intermediate volcanic and tuff rocks (Stroshein, 1998; Johnstone & Mortensen, 1994). Sub-volcanic feldspar porphyry dykes intrude all rock types in the area (Stroshein, 1998; Sawyer & Dickinson, 1976).
A sub-volcanic porphyry intrusive complex of the Mount Nansen Volcanic Suite occurs in the centre of the Mount Nansen property that forms an east-west zone 3.2 km long by 1.6 km wide. This complex is host to disseminated copper-molybdenum mineralization in porphyritic dykes, plugs and breccia bodies. Widespread propylitic alteration from this complex has altered the majority of rocks in the Mount Nansen area, including the Brown-McDade deposit which contains epidote, calcite, pyrite and magnetite replacement of hornblende (Stroshein, 1998; Sawyer & Dickinson, 1976).
Mining at the Brown-McDade open pit has exposed two separate and distinct deposit types. The first type is gold-silver vein mineralization hosted by a massive feldspar porphyry dyke. These fine-grained quartz-sulfide veins and breccia are enclosed by silicified and/or intensely clay-altered brecciated feldspar porphyry. The feldspar porphyry dyke has intruded along an igneous-metamorphic contact that has been mined over a strike length of 50 m in the southern portion of the pit. The second deposit type that occurs at the north end of the pit consists of a siliceous, sulphide-rich breccia in a pipe-like structure hosted by metamorphosed carbonate and clastic rocks of the Nasina Assemblage (Paleozoic). The pipe is elongate in plan with a high-grade core approximately 15 m wide and 25 m long surrounded by a low-grade envelope consisting of quartz-sulphide stringers in a silicified breccia. The deposits are separated by a northeast-striking fault which truncates and offsets the main vein-dyke mineralization.
Mineralization & Results
The ore at the Brown-McDade deposit is composed of fine-grained quartz and sulphides in narrow veins or as a matrix to a breccia of silicified and pyritized wall rock fragments. Unoxidized ore contains dark grey silica and pyrite, arsenopyrite, sphalerite, galena, sulphostalts, bornite, stibnite and chalcopyrite. Gold is genetically related to the pyrite phase of the mineralization and occurs as 5 to 50 micron-sized inclusions in pyrite grains. Oxidation of sulphide minerals extends to depths of up to 70 m and a large portion of the gold grains have been exposed by oxidation of the sulphides and post-depositional cataclastic fractures in the pyrite. The silver mineralogy is not as well understood but appears to be related to the base metal sulphide mineralization.
The 1985 exploration showed that haloes of lower grade mineralization and argillic alteration surround the high grade veins. The widest trench intersection (Trench 4) assayed 5.76 g/t Au and 63.1 g/t Ag across 22.0 m, while the highest grade (Trench 9) was 72.3 g/t Au and 79.2 g/t Ag across 6.0 m. The best drill intersection was 11.8 g/t Au and 83.0 g/t Ag across a true width of 19.6 m from Hole 85-4.
The 1986 work, which tested the northern and southern extensions of the Brown-McDade Zone, yielded disappointing results. The 1987 and 1988 work increased the density of holes in the main zone and tested it at depth. Proved open pit reserves (oxide) consist of 124,606 tonnes grading 10.42 g/t Au and 98 g/t Ag and probable underground reserves (sulphide) are 193,706 tonnes grading 14.47 g/t Au and 100 g/t Ag.
The six 1994 drill holes provided infill information to provide an updated reserve estimate for the Brown-McDade deposit. The holes typically returned lower grades and widths of mineralization than those obtained in many of the previous drilled adjacent holes. However, by design, many of the 1994 holes were drilled along the margins of the mineralized shoots where significantly lower grades and narrower widths would be encountered.
During road construction in 1996, BYG discovered a vein system parallel to the Brown-McDade zone. The vein is located within a geochemical anomaly which strikes northwest. The vein runs sub-parallel to the Brown-McDade vein and assayed 17.6 and 9.5 g/t Au equivalent over 3.05 m in trenches located 60 metres apart.
The 1996 geophysical programs were carried out over two grids; (1) the Nisling Lake and (2) the Buffalo. Both grid areas returned numerous, significant VLF-EM and magnetic anomalies, although most of the anomalies were not coincident. Financial problems at BYG prevented the company from following up any of the anomalies.
At the end of 1995 and prior to the commencement of mining published reserves for the Brown-McDade property stood at:
Open Pit - Oxide: 319 000 tonnes grading 5.30 g/t Au and 50 g/t Ag
Underground - Sulphide Ore: 298 000 tonnes grading 6.80 g/t Au and 57 g/t Ag
In 1996, BYG upgraded the on-site mill to 700 tonnes/day and added a carbon-in-pulp cyanide circuit. Previous operators at Mount Nansen were unsuccessful mainly due to poor recoveries. The addition of the cyanide circuit significantly improved recoveries. At the beginning of 1999, mining was suspended due to environmental problems. Ore reserves at the Brown-McDade property were nearly exhausted at the time of suspension.
A 43-101 technical report by Middleton, 2009, summarizes the Mount Nansen and Tawa properties. Resources are quoted for the Brown-McDade as re-calculated by Denholm et al (2000). The total INDICATED resource is listed as 126,100 tonnes grading 6. 2g/t Au and 51 g/t Ag. This appears to be for the underground portion of the No. 1 and 2 veins, and doesn't seem to include the open pittable portion of the resource mentioned earlier in the report. An additional INFERRED resources for the breccia pipe is calculated at 25,000 tonnes grading 10.7 g/t Au and 15 8g/t Ag. The summary table for the whole Mount Nansen project also includes an INDICATED resource for the Brown-McDade ore dump, calculated at 12,000 tonnes grading 5.0 g/t Au and 42 g/t Ag. This resource estimate was not filed with the securities authority and is not NI 43-101 compliant.
Location Map
Last Updated: Aug 7, 2020
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2009 | Airborne Geophysics: Magnetic | Magnetic and EM regional survey. |
| 2009 | Studies | Middleton, 2009, technical report. |
| 1999 | Other | Company operated for short time, shut down. |
| 1998 | Other | Company continued mining, temporary shutdown for environmental reasons. |
| 1997 | Other | Company continued mining. |
| 1996 | Other | Deposit entered production. |
| 1995 | Development, Surface: Mill/Concentrator Construction | Company constructed mill and mine infrastructure. |
| 1994 | Drilling: Diamond | Six holes, 748 m. |
| 1994 | Studies: Feasibility | Conducted various pre-feasibility studies. |
| 1989 | Drilling: Diamond | Five holes, unknown footage. |
| 1989 | Studies: Resource Estimate | Historical estimate, not NI 43-101 compliant. |
| 1988 | Drilling: Diamond | Seventy-five holes, 5,077 m. |
| 1988 | Lab Work/Physical Studies: Metallurgical Tests | |
| 1987 | Drilling: Diamond | One drill hole totaling 172 m. |
| 1987 | Geochemistry: Water | |
| 1987 | Studies: Environmental Assessment/Impact | |
| 1987 | Trenching: Mechanical | Backhoe and mechanical trenching totaling 3715 m. |
| 1986 | Ground Geophysics: EM | |
| 1985 | Drilling: Diamond | Six holes, 638 m. |
| 1985 | Drilling: Rotary | Number of holes drilled: 17 Amount of work done: 1234 METRES |
| 1985 | Geochemistry: Soil | |
| 1985 | Ground Geophysics: EM | |
| 1985 | Trenching: Mechanical | |
| 1967 | Development, Underground: Drifting/Raising | Total of 522 m. |
| 1966 | Drilling: Diamond | Underground drilling, 216 m. |
| 1947 | Development, Underground: Drifting/Raising | 609 m of X-cuts & drifting. |
| 1946 | Drilling: Diamond | Not specified. |
| 1943 | Other: Prospecting | |
| 1943 | Trenching |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Mount Nansen
Formation:
Member:
Terrane:
Period Max: Cretaceous
Age Max: 110 MA
Period Min: Cretaceous
Age Min: 90 MA
Rock Major: andesite/dacite/breccia/tuffs/rhyolite/porphyry/plugs/dykes/sills
Rock Minor:
Reference: Tempelman-Kluit (1984) - GSC OF 1101
Geological Unit (1M): mKN
Geological Unit (250K): mKN
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 095089 | 2009 | Report on a Geophysical Survey on the Mount Nansen Property and the Tawa Property | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics | ||
| 093231 | 1994 | Suinmaiy Report 1994 Exploration Program -Mt. Nansen Gold Project | All Weather Road - Development, Surface, Auger - Drilling, Diamond - Drilling, Drill Core - Geochemistry, Geotechnical - Studies, Mechanical - Trenching | 15 | 1036 |
| 092701 | 1989 | Report on the Geology and Mineral Inventory of the Mt. Nansen and Tawa Properties With Assessment of the Economic Potential for Open Pit Mining of Oxidized Mineralization in the Brown-McDade Zone | Data Compilation - Pre-existing Data, Resource Estimate - Studies | ||
| 092122 | 1987 | Nansen Project Final Report,Report on Bulldozer and Excavator Trenching Rusk Group,Environmental Update For the Mount Nansen Project | Diamond - Drilling, Water - Geochemistry, Metallurgical Tests - Lab Work/Physical Studies, Environmental Assessment/Impact - Studies, Backhoe - Trenching, Mechanical - Trenching | 17 | 1048.50 |
| 091825 | 1985 | Report on Geological, Geochemical, Geophysical, Trench and Drill Results on the Mt. Nansen Property | Interpretation - Airphotography, Environmental Clean-up - Development, Surface, Diamond - Drilling, Rotary - Drilling, Muck - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology, EM - Ground Geophysics, Metallurgical Tests - Lab Work/Physical Studies, Line Cutting - Other, Environmental Assessment/Impact - Studies, Geotechnical - Studies, Resource Estimate - Studies, Mechanical - Trenching | 30 | 2232.90 |
| 092553 | 1968 | Geology, Economy, Boring - Brown-McDade,Huestis,Webber Zones, Mount Nansen Property | Resource Estimate - Studies | ||
| 062230 | 1966 | Preliminary Feasibility Report Development and Mining Operations at the Mount Nansen Properties | Pre-feasibility - Studies | ||
| 062258 | 1965 | [Summary of the Peso Silver Mines Ltd. Properties] | Data Compilation - Pre-existing Data, Research/Summarize - Pre-existing Data, Resource Estimate - Studies | ||
| 092505 | 1959 | Dickson Gold Option, Carmacks, Yukon Terr. Billy Claim Group | Diamond - Drilling, Drill Core - Geochemistry, Drill Cuttings - Geochemistry, Mechanical - Trenching | 8 | 122.83 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC900075 | Informational bulletin and statutory information | Miscellaneous Company Documents | |
| ARMC900068 | Report on study of plans of Brown McDade Mine | Miscellaneous Company Documents | |
| ARMC006634 | Notes and sketch map - Mt. Nansen drill holes | Miscellaneous Company Documents | |
| ARMC006635 | Correspondence Re: Mount Nansen exploration syndicate | Miscellaneous Company Documents | |
| ARMC006636 | Correspondence Re: The Brown-McDade property | Miscellaneous Company Documents | |
| ARMC006637 | Portion of March 1982 feasibility report - Mt. Nansen mine | Report | |
| ARMC006638 | Property geology map - Mount Nansen property | Geoscience Map (Geological - Bedrock) | |
| ARMC006639 | Plan map - Geochemical soil survey anomalies - Values in ppm silver and arsenic - Mt. Nansen mine area | Geochemical Map | |
| ARMC006640 | General plan map - property geology - Mount Nansen | Geoscience Map (Geological - Bedrock) | |
| ARMC006641 | Geology map - Mount Nansen area | Geoscience Map (Geological - Bedrock) | |
| ARMC006642 | Main workings and general geology map - Mount Nansen properties | Geoscience Map (General) | |
| ARMC006643 | Geology and assays map - Mt. Nansen | Geoscience Map (Geological - Bedrock) | |
| ARMC006645 | Topographic map showing Mt. Nansen roads | Geoscience Map (General) | |
| ARMC006602 | Proposal report - Mt. Nansen camp | Report | |
| ARMC006603 | New regional - Nansen | Miscellaneous Company Documents | |
| ARMC006619 | Mine map - Ore shoots - 4100 adit level - Brown-McDade vein zones | Geoscience Map (General) | |
| ARMC006621 | Geology level plan map - 604-4-7 - Brown-McDade | Geoscience Map (Geological - Bedrock) | |
| ARMC006622 | Geology level plan map - 604-4-8 - Brown-McDade | Geoscience Map (Geological - Bedrock) | |
| ARMC006623 | Surface plan map - Brown McDade vein | Geoscience Map (Geological - Bedrock) | |
| ARMC006624 | Notes - Geology and mineralogy of Brown-McDade zone | Miscellaneous Company Documents | |
| ARMC006627 | Annual report 1968 - Mount Nansen mines | Report | |
| ARMC006629 | Photo - Mt. Nansen area | Photos | |
| ARMC006630 | Correspondence Re: Mount Nansen mines data | Miscellaneous Company Documents | |
| ARMC006631 | Correspondence Re: Target for mine development, 1965 | Miscellaneous Company Documents | |
| ARMC006632 | Correspondence Re: Visit to the Brown-McDade and Mt. Nansen mines | Miscellaneous Company Documents | |
| ARMC006633 | Summary report to date of 1964 season's work - Mount Nansen mines | Report | |
| ARMC004468 | Ronka EM-16 survey map - Map No. W-130-16 - Mt. Nansen project | Geophysical Map | |
| ARMC004469 | Ground magnetometer survey - Map No. W-130-15 - Mt. Nansen project | Geophysical Map | |
| ARMC004470 | Induced polarization survey - Contours of percent frequency effect - Map no. W-130-5 - Mt. Nansen project | Geophysical Map | |
| ARMC004471 | Induced polarization survey - Contours of percent frequency effect - Map no. W-130-6 - Mt. Nansen project | Geophysical Map | |
| ARMC004472 | Survey grid map - M-546-T-22 - Mt. Nansen project | Geophysical Map | |
| ARMC004473 | Survey grid map - M-546-T19 - Mt. Nansen project | Geophysical Map | |
| ARMC004474 | Survey grid and topography map - M-546-T18 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004475 | Survey grid map - M-546-T20 - Mt. Nansen project | Geophysical Map | |
| ARMC004476 | Survey grid map - M-546-T21 - Mt. Nansen project | Geophysical Map | |
| ARMC004477 | Plan view - Brown-McDade main zone - M-546-C-91 - Mt. Nansen project | Geoscience Map (Geological - Bedrock) | |
| ARMC004478 | Claims map showing Betty, Stone, Dome, Bit, Laura, Joanne, Dolly, Jeff, BM and South claims - M-546-CL-14 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004479 | Claims location map - M-546-CL-15 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004480 | Geology map - M-546-G-23 - Mt. Nansen project | Geoscience Map (Geological - Bedrock) | |
| ARMC004481 | Area geology map - M-546-G-24 - Mt. Nansen project | Geoscience Map (Geological - Bedrock) | |
| ARMC004482 | Generalized alteration plan map - M-546-G-25 - Mt. Nansen project | Geoscience Map (Geological - Bedrock) | |
| ARMC004483 | Schematic geological section X-Y - M-546-G-26 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004484 | Schematic geological section alone line 224N - M-546-G-27 - Mt. Nansen Lithologic log, assay log, structural log, fault Log, geotechnical log project | Geoscience Map (General) | |
| ARMC004486 | Map - Drilling, 1971 and proposed drilling, 1972 - M-546-D-11 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004487 | Map - Drillhole and water locations 1973 - M-546-D-12 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004488 | Plan view map - M-546-C-90 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004489 | Plan map showing trenches - M-546-C92 - Mt. Nansen project | Geoscience Map (General) | |
| ARMC004450 | Induced polarization survey map - Contours of apparent resistivity - Map no. W-130-4 - Mt. Nansen project | Geophysical Map | |
| ARMC004451 | Induced polarization survey map - Contours of apparent resistivity - Map no. W-130-3 - Mt. Nansen project | Geophysical Map | |
| ARMC004452 | Induced polarization survey map - Contours of apparent resistivity - Map no. W-130-2 - Mt. Nansen project | Geophysical Map | |
| ARMC004453 | Induced polarization survey map - Contours of apparent resistivity - Map no. W-130-1 - Mt. Nansen project | Geophysical Map | |
| ARMC004454 | Induced polarization survey map - Contours of apparent metal factor - Map no. W-130-12 - Mt. Nansen project | Geophysical Map | |
| ARMC004455 | Induced polarization survey map - Contours of apparent metal factor - Map no. W-130-11 - Mt. Nansen project | Geophysical Map | |
| ARMC004456 | Induced polarization survey map - Contours of apparent metal factor - Map no. W-130-10 - Mt. Nansen project | Geophysical Map | |
| ARMC004457 | Induced polarization survey map - Contours of apparent metal factor - Map no. W-130-9 - Mt. Nansen project | Geophysical Map | |
| ARMC004458 | Induced polarization survey map - Contours of apparent metal factor - Map no. W-130-14 - Mt. Nansen project | Geophysical Map | |
| ARMC004459 | Induced polarization survey map - Contours of percent frequency effect - Map no. W-130-8 - Mt. Nansen project | Geophysical Map | |
| ARMC004460 | Induced polarization survey map - Contours of percent frequency effect - Map no. W-130-7 - Mt. Nansen project | Geophysical Map | |
| ARMC004461 | Induced polarization survey map - Contours of percent frequency effect - Map no. W-130-13 - Mt. Nansen project | Geophysical Map | |
| ARMC004463 | Electromagnetic survey map - Mt. Nansen project - Plate 2 | Geophysical Map | |
| ARMC004464 | Magnetic profile - Mt. Nansen project - Sheet 3 | Geophysical Map | |
| ARMC004465 | Magnetic profile - Mt. Nansen project - Sheet 2 | Geophysical Map | |
| ARMC004466 | Magnetic profile - Mt. Nansen project - Sheet 1 | Geophysical Map | |
| ARMC004467 | Electromagnetic survey map - Mt. Nansen project - Plate 1 | Geophysical Map | |
| ARMC004462 | Electromagnetic survey map - Mt. Nansen project - Plate 3 | Geophysical Map | |
| ARMC004485 | Geology map - M-546-G-28 - Rusk Creek - Mt. Nansen project | Geoscience Map (Geological - Bedrock) | |
| ARMC010592 | Sketch map showing lineations, Vic trench, J Bill trenches - Mt. Nansen area | Geoscience Map (General) | |
| ARMC010597 | Mylar overlays of Dickenson report/map - Ag and Pb - Nansen N. | Geochemical Map | |
| ARMC010598 | Mylar overlays of the Mt. Nansen area showing embayment lineations, mine, placer creek, and hot spot | Geoscience Map (Geological - Bedrock) | |
| ARMC010599 | Mylar overlay of the Mt. Nansen area showing lineations, fault lines and structural features | Geoscience Map (Geological - Bedrock) | |
| ARMC010600 | Mylar overlay of the Mt. Nansen area showing claim outlines, outcrop locations and geochemical sample locations | Geochemical Map | |
| ARMC010601 | Mylar overlays of lineations and fault blocks in Freegold and Mt. Nansen areas | Geoscience Map (Geological - Bedrock) | |
| ARMC900070 | Interim Report #2, Brown-McDade Mines Ltd., Carmacks, YT | Miscellaneous Company Documents | |
| ARMC900069 | Interim Report #1 for Mount Nansen Mines Ltd. | Miscellaneous Company Documents | |
| ARMC900072 | Impressions of Mount Nansen gold-silver district, Yukon | Miscellaneous Company Documents | |
| ARMC900065 | Summary Report Mount Nansen Mines Ltd., Carmacks Area | Miscellaneous Company Documents | |
| ARMC012905 | Report on proposed development program - Huestis & Webber mines 1969 | Report | |
| ARMC012911 | Ore reserves - Dec. 1, 1968 - Mt. Nansen Mines Ltd. | Report | |
| ARMC012907 | Proposed budget (October 1, 1968 - July 31, 1969) - Mt. Nansen operation | Report | |
| ARMC012910 | Mineralogical investigation of a sample of silver-gold ore from Mount Nansen Mines Limited, Yukon Territory - Mines branch investigative report IR 68-52 | Report | |
| ARMC016612 | Geochemical map with notations - 115I/3 - Victoria Mountain | Geochemical Map | |
| ARMC011181 | Map section - Diamond drilling - 1971 - Mt. Nansen | Geoscience Map (General) | |
| ARMC011180 | Map section - Percussion holes - 1971 - Mt. Nansen | Geoscience Map (General) | |
| ARMC012904 | Review-report on the Mt. Nansen Mine, Yukon Territory, Canada | Report | |
| ARMC016613 | Geology map - 115I/3 - Victoria Mountain | Geoscience Map (Geological - Bedrock) | |
| ARMC016238 | Lithologic logs - Webber and Brown-McDade - Nansen project | Drill Logs | |
| ARMC012906 | Economic performance of the Mt. Nansen operation | Report | |
| ARMC012909 | Feasibility report - Mt. Nansen mine & mill, Carmacks, Yukon Territory | Report | |
| ARMC011179 | Claim location plan map - Mt. Nansen project | Geoscience Map (General) | |
| YEG1998_20 | A summary report on the geology of the Brown-McDade gold-silver deposit, Mount Nansen mine area, Yukon | Annual Report Paper |
| Citations |
|---|
| Campbell D, 1994. Feasibility Study Report on Mount Nansen Gold Project in Yukon Territory, Canada, Volume 1. Report for BYG Natural Resources Inc. |
| Denholm E, Dumka D and Farquharson G, 2000. A Review of the Mount Nansen Property, Yukon Territory. Unpublished report for Department of Indian Affairs and Northern Development (available from EMR Library - Whitehorse, Yukon). |
| JDS Mining. Website: https://www.jdsmining.ca/projects/mt-nansen/ |
| Johnston, Stephen, T. and Mortensen, James, K., 1994. Regional setting of porphyry Cu-Mo deposits, volcanogenic massivesulphide deposits, and mesothermal gold deposits in the Yukon-Tanana Terrane, Yukon. In: Yukon Metallogeny: Recent Developments, Abstracts and Proceedings, Canadian Institute of Mining and Metallurgy, District 6 Annual General Meeting, J.L. Jambor (ed.), p. 30-34. |
| Middleton R.S., Nov 27, 2009. National Instrument 43-101 Report on the Mount Nansen Property and the Tawa Property, Whitehorse Mining District, Yukon Territory, for Guiness Exploration Inc. - Although referenced as a 43-101 report, the report was never filed with the securities authority. Resource figures came from Denholm, Dumka and Farquharson (2000) report. |
| Sawyer, J.P.B. and Dickinson, R.A., 1976. Mount Nansen porphyry copper and copper-molybdenum deposits of the calc-alkaline suite. In: Porphyry Deposits of the Canadian Cordillera, T. G. Schroeter (ed.), Canadian Institute of Mining and Metallurgy, Special Vol. 15, p. 336-343. |
| Technical Report on the Charlotte Property Whitehorse Mining district, Yukon Territory. Prepared by Coast Mountain Geological Ltd for Ansell Capital Corp, available from www.ansellcapital.com. |
Drill Core at YGS Core Library
| Number | Property | Year Drilled | Core Size | Photos | Data |
|---|---|---|---|---|---|
| DDH 95-149 | Mount Nansen | 1995 | 0 | 2 | |
| DDH 85-12A | Mount Nansen | 1985 | HQ | 0 | 3 |
| DDH 85-2A | Mount Nansen | 1985 | HQ | 0 | 3 |
