General Information
Aliases: Val
Deposit Type(s): Unknown
Location(s): 61°30'58" N - -129°26'35" W
NTS Mapsheet(s): 105H11
Location Comments: .5 Kilometres
Hand Samples Available: No
Last Reviewed:
Capsule
Work History
Staked as Val cl (YA46376) in Oct/79 by M. Conley. Restaked as Fran cl 1-38 by International Barytex Resources Ltd in Aug/94. The company carried out prospecting and geological mapping in 1995 and an airborne EM and magnetic survey in 1998.
Capsule Geology
The occurrence is located near the eastern shore of the East Arm of Frances Lake. The area marks the western edge of the Selwyn Basin, where siliclatic and carbonate deposition took place under different tectonic environments, from Late Proterozoic through Triassic.
Outcrop is scarce in the area however Fonseca (2001) of the Yukon Geology Program examined the general geology of the area while mapping the neighboring Matt Berry deposit (Minfile Occurrence #105H 021) located approximately 5 km to the south. The area is underlain by sandstone, limestone and shale that are intruded to the east by the mid-Cretaceous Mt Billings Batholith. The sedimentary sequence was orginally thought to be Silurian to Devonian in age. However, recent age dating by the Yukon Geology Program of galena collected from black phyllites at the Matt Berry deposit returned an Ordivician age suggesting that the sedimentary units in the area are coeval with Road River Group rocks. Also, examination of diamond drill core from the Matt Berry deposit revealed that the dark phyllites in the footwall of the Matt Berry zone are underlain by a strongly deformed, quartz-sericite augen schist of probable felsic volcanic protolith. The presence of the felsic volcanic rocks suggests that mineralization in the area, once thought to be mainly sedimentary-exhalative in nature may possess a strong volcanogenic component.
Only one outcrop area was found in the occurrence area. It consisted of thinly bedded, dark blue-grey hornfelsic phyllite hosting an oxidized quartz vein containing pyrite, pyrrhotite, galena, sphalerite and trace chalcopyrite. A 30 cm wide chip sample collected across the vein returned 0.06% Cu, 0.56% Pb, 0.01% Zn, 4.11 g/t Ag and 0.07 g/t Au. The airborne survey outlined 4 weak conductors on the Fran claims, one of which coincides with the mineralized quartz vein.
References
FONSECA, A., 2001. Felsic metavolcanic rocks at Matt Berry: A new deposit model. 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. 311-318.
INTERNATIONAL BARYTEX RESOURCES LTD, Aug/95. Assessment Report #093322 by H.L. King.
INTERNATIONAL BARYTEX RESOURCES LTD, Apr/99. Assessment Report #093989 by H.L. King.
INTERNATIONAL BARYTEX RESOURCES LTD, May/2002. Web Site: www.barytex.com/.
Staked as Val cl (YA46376) in Oct/79 by M. Conley. Restaked as Fran cl 1-38 by International Barytex Resources Ltd in Aug/94. The company carried out prospecting and geological mapping in 1995 and an airborne EM and magnetic survey in 1998.
Capsule Geology
The occurrence is located near the eastern shore of the East Arm of Frances Lake. The area marks the western edge of the Selwyn Basin, where siliclatic and carbonate deposition took place under different tectonic environments, from Late Proterozoic through Triassic.
Outcrop is scarce in the area however Fonseca (2001) of the Yukon Geology Program examined the general geology of the area while mapping the neighboring Matt Berry deposit (Minfile Occurrence #105H 021) located approximately 5 km to the south. The area is underlain by sandstone, limestone and shale that are intruded to the east by the mid-Cretaceous Mt Billings Batholith. The sedimentary sequence was orginally thought to be Silurian to Devonian in age. However, recent age dating by the Yukon Geology Program of galena collected from black phyllites at the Matt Berry deposit returned an Ordivician age suggesting that the sedimentary units in the area are coeval with Road River Group rocks. Also, examination of diamond drill core from the Matt Berry deposit revealed that the dark phyllites in the footwall of the Matt Berry zone are underlain by a strongly deformed, quartz-sericite augen schist of probable felsic volcanic protolith. The presence of the felsic volcanic rocks suggests that mineralization in the area, once thought to be mainly sedimentary-exhalative in nature may possess a strong volcanogenic component.
Only one outcrop area was found in the occurrence area. It consisted of thinly bedded, dark blue-grey hornfelsic phyllite hosting an oxidized quartz vein containing pyrite, pyrrhotite, galena, sphalerite and trace chalcopyrite. A 30 cm wide chip sample collected across the vein returned 0.06% Cu, 0.56% Pb, 0.01% Zn, 4.11 g/t Ag and 0.07 g/t Au. The airborne survey outlined 4 weak conductors on the Fran claims, one of which coincides with the mineralized quartz vein.
References
FONSECA, A., 2001. Felsic metavolcanic rocks at Matt Berry: A new deposit model. 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. 311-318.
INTERNATIONAL BARYTEX RESOURCES LTD, Aug/95. Assessment Report #093322 by H.L. King.
INTERNATIONAL BARYTEX RESOURCES LTD, Apr/99. Assessment Report #093989 by H.L. King.
INTERNATIONAL BARYTEX RESOURCES LTD, May/2002. Web Site: www.barytex.com/.
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 093989 | 1998 | Data Compilation and Interpretation of Airborne EM Anomalies | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics | ||
| 093322 | 1995 | Geological Report on the Fran and Pat Claims | Bedrock Mapping - Geology, Prospecting - Other | ||
| 090943 | 1971 | Matt Berry Joint Venture Frances Lake Yukon Sections Showing D. D. Holes 1 to 31 | Research/Summarize - Pre-existing Data | ||
| 060952 | 1970 | Report on a Geochemical Orientation and Stream Sediment Survey | Silt - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, IP - Ground Geophysics, Magnetics - Ground Geophysics |
Related References
| Number | Title | Page(s) | Reference Type | Document Type |
|---|---|---|---|---|
| BROCK000253 | Mineral claim maps - Zinc and Barb claims | Property File Collection | Geoscience Map (General) |