General Information
Secondary Commodities: lead, zinc, silver
Aliases: Vera
Deposit Type(s): Manto Polymetallic Ag-Pb-Zn, Sediment hosted Mississippi Valley-Type Pb-Zn (MVT)
Location(s): 64.317910 N, -133.748750 W
NTS Mapsheet(s): 106C05
Location Comments: Location based on drillhole 5 (AR 090583)
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Vera cl 1-164 (YA37382) in July, 1978 by Prism Joint Venture (Asamera Oil Corporation, Chieftain Development Company Ltd., Prism Resources Ltd., Siebens Oil & Gas Ltd. and E & B Exploration Ltd.). In 1979, Dome Petroleum Ltd. replaced Siebens in the joint venture and drilled 27 diamond drill holes (1682 m) along the bulldozed Gunsight and Scarp (MINFILE 106C 139) occurrences. Dome dropped its interest and E & B Exploration's interest was transferred to Imperial Metals Ltd. in 1983 and acquired in 1984 by Prism, at which time Prism became project operator. In 1985, Prism changed its name to International Prism Exploration Ltd. In October 1997, 15966 Yukon Inc., a wholly owned subsidiary of Manson Creek Resources Ltd., staked Rusty cl 1-131 (YB99989) surrounding the occurrence. Manson Creek performed a ground IP survey over the claims in 1998.
A regional airborne geophysical survey was conducted over the claim block in 2001 (no report available). In 2009, Shawn Ryan re-staked the area covering the occurrence and surrounding showings as Vera 1-12 (YC70677-YC70688) and performed a soil survey.
Regional & Property Geology
The occurrence is located at the southern edge of the Mackenzie Platform, a predominantly shallow water carbonate and clastic sequence that formed on the western margin of the North American craton during Lower Proterozoic through Paleozoic times. The regional geology consists of Upper Proterozoic Rapitan(?) Group mudstones overlain by Upper Proterozoic Profeit Formation dolostones and Upper Proterozoic Nadaleen Formation silty limestone. Over these units are minor clastic and carbonate rocks of the Neoproterozoic to Lower Cambrian Hyland Group. Lower Paleozoic platform carbonates unconformably overlie these units. An arcuate east-west trending, south-dipping normal fault lies north of the occurrence, separating it from Paleoproterozoic Wernecke Supergroup clastic rocks and Upper Proterozoic Pinguicula Formation clastics and carbonates to the north.
The Gunsight occurrence is hosted in orange-weathering grey argillaceous dolomite of the Profeit Formation (Hay Creek Group).
Mineralization & Results
Galena, sphalerite and tetrahedrite mineralization at Gunsight occurs as infill and replacement within faulted dolomitic wallrock. Mineralization is present dominantly as: 1) disseminated blebs to massive bands of sphalerite (and minor galena); 2) massive coarse-grained galena with minor tetrahedrite in large pods and as matrix in dolomite breccia zones; 3) galena-filled fracture veinlets; and 4) small high-grade veins of galena/tetrahedrite.
The main gangue minerals are dolomite, calcite, quartz, pyrite and siderite. The dolomite occurs mainly as fragments making up the breccia framework. Quartz and calcite occur in small fracture veinlets. Siderite occurs with the mineralization in large amounts, as well as in fracture veinlets in the wallrock. Large vugs with coarse crystalline siderite are also common.
The major portion of the mineralized zones have been extensively weathered giving it a rusty broken-up oxidized appearance. The main oxides are limonite and minor pyrolusite. Sphalerite has been leached away, but galena has not been dissolved to any important extent. The behavior of silver is not known. Mineralization occurs in a 500 m long fault. The attitude of the deposit is ~080/080.
The best mineralization occurs in two shoots: East (Gunsight) and West (Vera Main – MINFILE 106C 083) occurrences, which are separated by 90 m of lower grade material. The west (Vera Main) shoot consists of coarse siderite and dolomite with massive pods of fine-grained galena that are several centimetres to a metre thick along the hanging wall contact, with minor disseminated sphalerite throughout. The east shoot (Vera Gunsight) is more brecciated and fractured. The sulfides occur as massive blebs, fine disseminations and tiny veinlets in fractures. Massive and disseminated pyrite occurs and sphalerite is more abundant.
Drill results in 1979 included 22.2 m (10.2 m true width) of 429 g/t Ag, 0.8% Pb and 2.1% Zn in hole 5. A short intercept in hole 6 returned 1056 g/t Ag, 11.1% Pb and 3.2% Zn over 3.4 m (0.9 m true width). Underground sampling of the adit gave average grades of 960 g/t Ag, 7.3% Pb and 2.9% Zn over a 1.8 m width and 148 m length at the Gunsight occurrence.
Staked as Vera cl 1-164 (YA37382) in July, 1978 by Prism Joint Venture (Asamera Oil Corporation, Chieftain Development Company Ltd., Prism Resources Ltd., Siebens Oil & Gas Ltd. and E & B Exploration Ltd.). In 1979, Dome Petroleum Ltd. replaced Siebens in the joint venture and drilled 27 diamond drill holes (1682 m) along the bulldozed Gunsight and Scarp (MINFILE 106C 139) occurrences. Dome dropped its interest and E & B Exploration's interest was transferred to Imperial Metals Ltd. in 1983 and acquired in 1984 by Prism, at which time Prism became project operator. In 1985, Prism changed its name to International Prism Exploration Ltd. In October 1997, 15966 Yukon Inc., a wholly owned subsidiary of Manson Creek Resources Ltd., staked Rusty cl 1-131 (YB99989) surrounding the occurrence. Manson Creek performed a ground IP survey over the claims in 1998.
A regional airborne geophysical survey was conducted over the claim block in 2001 (no report available). In 2009, Shawn Ryan re-staked the area covering the occurrence and surrounding showings as Vera 1-12 (YC70677-YC70688) and performed a soil survey.
Regional & Property Geology
The occurrence is located at the southern edge of the Mackenzie Platform, a predominantly shallow water carbonate and clastic sequence that formed on the western margin of the North American craton during Lower Proterozoic through Paleozoic times. The regional geology consists of Upper Proterozoic Rapitan(?) Group mudstones overlain by Upper Proterozoic Profeit Formation dolostones and Upper Proterozoic Nadaleen Formation silty limestone. Over these units are minor clastic and carbonate rocks of the Neoproterozoic to Lower Cambrian Hyland Group. Lower Paleozoic platform carbonates unconformably overlie these units. An arcuate east-west trending, south-dipping normal fault lies north of the occurrence, separating it from Paleoproterozoic Wernecke Supergroup clastic rocks and Upper Proterozoic Pinguicula Formation clastics and carbonates to the north.
The Gunsight occurrence is hosted in orange-weathering grey argillaceous dolomite of the Profeit Formation (Hay Creek Group).
Mineralization & Results
Galena, sphalerite and tetrahedrite mineralization at Gunsight occurs as infill and replacement within faulted dolomitic wallrock. Mineralization is present dominantly as: 1) disseminated blebs to massive bands of sphalerite (and minor galena); 2) massive coarse-grained galena with minor tetrahedrite in large pods and as matrix in dolomite breccia zones; 3) galena-filled fracture veinlets; and 4) small high-grade veins of galena/tetrahedrite.
The main gangue minerals are dolomite, calcite, quartz, pyrite and siderite. The dolomite occurs mainly as fragments making up the breccia framework. Quartz and calcite occur in small fracture veinlets. Siderite occurs with the mineralization in large amounts, as well as in fracture veinlets in the wallrock. Large vugs with coarse crystalline siderite are also common.
The major portion of the mineralized zones have been extensively weathered giving it a rusty broken-up oxidized appearance. The main oxides are limonite and minor pyrolusite. Sphalerite has been leached away, but galena has not been dissolved to any important extent. The behavior of silver is not known. Mineralization occurs in a 500 m long fault. The attitude of the deposit is ~080/080.
The best mineralization occurs in two shoots: East (Gunsight) and West (Vera Main – MINFILE 106C 083) occurrences, which are separated by 90 m of lower grade material. The west (Vera Main) shoot consists of coarse siderite and dolomite with massive pods of fine-grained galena that are several centimetres to a metre thick along the hanging wall contact, with minor disseminated sphalerite throughout. The east shoot (Vera Gunsight) is more brecciated and fractured. The sulfides occur as massive blebs, fine disseminations and tiny veinlets in fractures. Massive and disseminated pyrite occurs and sphalerite is more abundant.
Drill results in 1979 included 22.2 m (10.2 m true width) of 429 g/t Ag, 0.8% Pb and 2.1% Zn in hole 5. A short intercept in hole 6 returned 1056 g/t Ag, 11.1% Pb and 3.2% Zn over 3.4 m (0.9 m true width). Underground sampling of the adit gave average grades of 960 g/t Ag, 7.3% Pb and 2.9% Zn over a 1.8 m width and 148 m length at the Gunsight occurrence.
Location Map
Last Updated: Mar 11, 2020
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2009 | Geochemistry: Soil | |
| 2001 | Airborne Geophysics: Electromagnetic | Also magnetics in a regional survey. |
| 1998 | Ground Geophysics: IP | |
| 1979 | Drilling: Diamond | 22 diamond drill holes. |
| 1979 | Geochemistry | |
| 1979 | Ground Geophysics: EM | |
| 1979 | Trenching: Mechanical |
Regional Geology - Terrane
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Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 096253 | 2011 | Assessment Report Describing 2011 Drilling and Geochemical Sampling at the Rusty Property | Diamond - Drilling, Soil - Geochemistry | 9 | 1340 |
| 095720 | 2010 | Assessment Report Describing Geological Mapping, Prospecting and Geochemical Sampling at the Rusty Property | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other | ||
| 093968 | 1999 | Geochemical, Geological and Geophysical Assessment, Report for the Val,Vera,Rusty,KLA,Nad and Craig Claims | Orthophoto - Airphotography, Silt - Geochemistry, Bedrock Mapping - Geology, Detailed Bedrock Mapping - Geology, Prospecting - Other, Research/Summarize - Pre-existing Data | ||
| 094073 | 1999 | Geophysical, Geochemical and Diamond Drilling Assessment Report for the Val, Vera and Rusty Claims | Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, IP - Ground Geophysics, Line Cutting - Other | 7 | 986.80 |
| 092725 | 1988 | A Preliminary Diamond Drilling and Trenching Report on the Val-Vera Quartz Claims | All Weather Road - Development, Surface, Diamond - Drilling, Drill Core - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Prospecting - Other, Backhoe - Trenching | 12 | 1479.20 |
| 062208 | 1985 | Summary Report on the Val-Vera Property | Research/Summarize - Pre-existing Data | ||
| 062185 | 1983 | Summary Report on the Val-Vera Property | Research/Summarize - Pre-existing Data | ||
| 062146 | 1982 | Report on the Vera, South Rusty Mountain and Siltstone Mineral Occurrences | Research/Summarize - Pre-existing Data | ||
| 090914 | 1981 | [Underground Exploration on the Vera Claims] | Shaft Development - Development, Underground, Rock - Geochemistry, Detailed Bedrock Mapping - Geology | ||
| 090722 | 1980 | [Diamond Drilling on the Vera Claim Group] | Diamond - Drilling, Drill Core - Geochemistry | 42 | 4041 |
| 090583 | 1978 | Assessment Report for the Vera 1 - 164 Mineral Claims | Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Regional Bedrock Mapping - Geology, Property Evaluation - Other, Prospecting - Other, Backhoe - Trenching | 127 | 1682 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| 09-148 | Geochemical Report on Lead Regional Areas - PBR and Vera | YMEP Report |
| Citations |
|---|
| James, D.H., Apr/1980. Silver-lead-zinc at Kathleen Lakes. Canadian Mining Journal, p. 49-54. |
