Work History
Staked within a large group of Bom claims (56221) in Aug/46 by Hudson Bay Mining & Smelting Company Ltd. The company reportly, drilled 9 holes (935.7 m) in 1947 but no records have been found.
Restaked in Sep/58 as Stan cl (73718) by A. Riba who immediately optioned the claims to J. Bradcoe and H. Karels. Restaked as Sandy cl (Y13117) in Jun/66 by G. Kazakoff; and as Glen cl (Y17832) in Jul/67 by T.R. Cairns.
Restaked as Dan cl 1-272 (Y27673) in Jul/68 by Boswell River Mines Ltd, which drilled 1328.3 m later in the year and added the Red cl (Y55345) in May/71.
The Minex 1977 Limited Partnership (Action Resources Ltd, W.M. Bath Investments Ltd) staked STQ cl 1-32 (YA21708) to the north in Aug/77. In 1978 the claims were optioned to Amax Potash Ltd and Minex¿s residual rights were sold to Logtung Resources Ltd. Amax carried out geological mapping and geochemical sampling the results of which led the company to stake STQ cl 33-118 (YA33192) in Jun/78. The occurrence was restaked within these new claims. Amax noted the occurrence on its maps but it appears they only carried out a cursary examination of the mineralization before dropping its option in 1979. Logtung changed its name in 1982 to Regional Resources Ltd and W.M. Bath Investments changed its to Petromin Resources Corporation.
The east occurrence was restaked in Aug/84 as Mas cl 1-1VX (YA71513) by A. Sahacic. Both occurrences were restaked as TBMB cl 1-6 (YA91276) and TBMB cl 13-15 ( YA91282) in Aug/86 by T. McCrory and associates and who optioned the claims to Apex Energy Corporation, in the spring of 1987. The company trenched and sampled in the summer and fall of 1987 before dropping the option.
First Yukon Silver Resources Inc. surrounded the TBMB cl with Strata cl 1-42 (YB15596) in Jan/89, Bound cl 1-36 (YB15809) in Aug/89 and Leeron cl 1-48(YB16360), in Sep/89 and Tara cl 1-48 (YB33312) and Amber cl 1-70 (YB33360) to the northwest in Aug/90. First Yukon Silver carried out trenching programs in 1989, 1990 and 1991. A 50% interest in the Bound cl was transferred to P. Kostiuk in Aug/91.
G. Stewart staked At cl 1-48 onto the south end of the Strata claims in Nov/90 and Scarn 1-16 (YB35222) in Jan/92.
H. Hibbing acquired a 100% interest in the TBMB claims in Apr/92 and performed road work on the Amber 22, 24, 26, 28 and 30 cl in in the summer of 1992 and trenched on TBMB 3 claim in Jul/93 and on the TBMB 2 and other neighboring claims in Aug/93.
G. Stewart built roads on the At claims in Aug/93 and added on Scarn cl 17-28 (YB46277) in Sep/93.
In Sep/97 S. Secerbegovic staked Bond cl 1-36 (YB89935) overtop of the expired Bound claims. Hibbing and Secerbegovic formed a partnership and carried out detailed geological mapping on the Tanis, Bound and Bond claims in 1997, 1998 and 2000
Capsule Geology
The area is located 18 km north of the Yukon-British Columbia border, northeast of Swift River, Yukon. The occurrence lies about 1.5 km south of the Late Permian Ram stock and less than 3 km northeast of the mid-Cretaceous Seagull Batholith. Detailed mapping by T. Liverton employed by Hibbing and Secerbegovic shows that the area is underlain by Lower, Intermediate and Upper siliclastic units separated by metavolcanic and marble units. The marble unit and metavolcanic units can be traced intermittently across the length of the TBMB, Bound/Bond and Mod claims The siliclastic rocks likely belong to the Swift River Succession, (pre-late Mississippian) and the metavolvanic unit likely belongs to the overlying Klinkit Succession. The origin of the marble unit is presently uncertain. All three units are believed to be part of the Yukon Tanana terrane.
The occurrence consists of two massive sulphide showings, 500 m apart that are hosted in garnet-diopside skarn at the contact between marble and overlying banded siliceous hornfels, (probably a meta-tuff). The west showing consists of a 2 m wide layer of massive sphalerite and pyrrhotite, and minor galena and arsenopyrite, adjacent to a rib of massive, coarse grained garnet-diopside-actinolite skarn containing traces of scheelite and powellite. Drilling in 1968 tested the No. 2 Zone over a length of 230 m and intersected minor mineralization.
The east showing consists of massive pyrrhotite, pyrite, galena, sphalerite and chalcopyrite exposed in a bulldozer trench at the contact between marble and overlying meta-tuff. The massive sulphide layer is approximately 0.6 m thick.
Amax Potash appears to be the first company to stratigraphically relate this occurrence to the neighboring Mod occurrence (Minfile Occurrence #105B 031) located 1.5 km to the east. Unfortanely most of the early exploration data for this area appears to have been lost. Prospecting and trenching by Apex Energy exposed 4 separate zones. The company appears to have focused most of their attention on the west showing (No. 2 showing on Apex¿s maps) which appears to have received the most attention in the past. The best grab sample consisting of massive galena situated in a clay alteration zone returned 4 114 g/t Ag. Channel samples collected from blast trenches located in the west zone returned up to 995 g/t Ag over 0.8 m. The other three zones returned substanially lower assay values.
The detailed mapping by Liverton outlined the deformation history of the area and the limits of the marble and metavolcanic units. Liverton believes that the mineralization present at the Munson (TRMB) and Mod occurrence, (Minfile Occurrence #105B 031) is similar to that seen to the north at the Dan occurrence (Bar occurrence, Minfile Occurrence #105B 027) and all the mineralization is hosted by the same stratigraphic unit, meaning the Ram Creek assemblage extends further south than shown on current geological maps. Roots (NATMAP) believes that the mineralization is similar but the mineralization present at the Munson occurrence occurs at least 1 km higher in the structural succession. Liverton also suggests the mineralization is volcanogenic massive sulphide while Roots feels that evidence proving either epigenetic skarn or skarnified syngenetic (possibly volcanic-associated) mineralization is unclear.
References
AMAX POTASH LIMITED, Jun/79. Assessment Report #090472 by C.J. Hodgson.
APEX ENERGY CORPORATION, Aug/88. Assessment Report #092521 by S. Coombes and F. Marshall Smith.
D¿EL-REY Silva, L.J.H., LIVERTON, T., ROOTS, C., PARADIS, S., 2001. A structural analysis of the upper Swift River area, southeastern Yukon (105B/3), Part II: The TRMB claims and implications for the regional geology. In: Yukon Exploration and Geology 2000, D.S.Emond and L.H. Weston (eds.), Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 301-310.
DICK, L.A., 1980. A comparative study of the geology, mineralogy, and conditions of formation of contact metasomatic mineral deposits in the northeastern Canadian Cordillera. Unpublished Ph.D. thesis, Queen's University, p. 8, 194, 205, 217-219, 381.
FIRST YUKON SILVER RESOURCES LTD., Feb/98. Assessment Report #093758 by T. Liverton.
FIRST YUKON SILVER RESOURCES LTD., Mar/99. Assessment Report #093954 by T. Liverton.
FIRST YUKON SILVER RESOURCES LTD., Feb/2001. Assessment Report #094196 by T. Liverton and Luiz J.H. D¿el-Rey Silva.
GEORGE CROSS NEWSLETTER, 16 Jun/87, 20 Jul/87.
HARMS T.A. AND STEVENS, R.A. 1995. Investigations in the Dorsey terrane, Part 2: lithologies and structure of (?) Paleozoic stratified rocks in the Stikine Ranges, northern British Columbia; in Current Research 1995-A; Geological Survey of Canada, p. 129-133.
MORTENSEN, J.K. AND GABITES, J. E., 2002. Lead Isotopes constraints on the metallogeny of southern Wolf Lake, southeastern Teslin and Northern Jennings river map areas, Yukon and British Columbia: Preliminary results. In: Yukon Exploration and Geology 2001, D,S, Emond, L.H. Weston and L.L.. Lewis (eds.), Exploration and geological services Division, Yukon region, Indian and Northern Affairs Canada, p. 179-188.
NELSON, J.L., ROOTS, C. HARMS, T., 2001. Ram Creek and Dorsey assemblages, Swift River succession, Screw Creek limestone, Klinkit and Teh successions. In: Unpublished 2001 NATMAP Field Trip Guidebook, 74 p.
ROOTS, C.F. ET AL., 2000. Revision mapping of the Yukon Tanana and equivalent terranes in Northern British Columbia and southern Yukon Territory between 1310 and 1320 W; Geological Survey of Canada, Current Research 2000-A4, 10p.
STEVENS, R.A. AND HARMS, T.A., Investigations in the Dorsey terrane, Part 1: stratigraphy, structure, and metamorphism in the Dorsey Range, southern Yukon Territory and northern British Columbia, in Current Research 1995-A; Geological Survey of Canada, p. 117-127.
YUKON EXPLORATION AND GEOLOGY 1981, p. 98; 1982, p. 96; 1997, p. 20, 37-38; 1998, p. 20.
YUKON EXPLORATION 1984, p. 59; 1990, p. 59.
