The Oweegee Dome Property was the focus of a large, hydrothermal mineralizing system that entails a number of genetically related target types: Au-Cu porphyry (KSM type), VMS Au-Ag-Cu-Au-Zn (Eskay Creek type), and stratabound Ag-Zn-Pb-Cu (VMS type). Seabridge Gold’s KSM Au-Cu porphyry deposit has total proven and probable reserves of 38.2 million oz. gold and 9.9 billion lb. Barrick’s historic Eskay Creek Mine produced >3 million oz Au and 160 million oz Ag at an average grade of 48.4 g/t Au and 2221 g/t Ag. Epithermal Au mineralization is often associated with Au-Cu porphyry deposits in the Golden Triangle; for example, Pretium Resources’ Brucejack epithermal deposit has proven and probable reserves of 6.9 million oz. gold.
The Oweegee Dome Property is located in northwest British Columbia’s mineral-rich Golden Triangle, approximately 74 km northeast of the town of Stewart, which boasts a year-round, ice-free port. The Stewart–Cassiar Highway 37 passes through the western Tenures. In addition, the 344 km long, 287 kv Northwest Transmission Line passes through the Property and five access roads provide entry to the stratabound zinc targets on the Delta West Grid. The principal exploration target, the Deltaic Grid, is located only 5 km east of the transmission line.
Click image for large view.
The Oweegee Dome Property is composed of 77 Mineral Tenures covering ~312 sq. km, and Millrock has 100% ownership interest subject to a 2% NSR on five Tenures. The mineral assessment is current and in good standing with the BC government. A multi- ‘year area base’ Work Permit is in place until Dec. 31, 2017. The tenures are under option to Sojourn Ventures Inc. (TSX.V: SOJ “Sojourn”).
The Oweegee Property is situated on the eastern flank of a broad, regional northwest trending sub-volcancic-plutonic belt related to the Stuhini and Hazelton groups. Forming part of the Stikinia Terrane known as the ‘Stewart Complex’, the belt hosts much of the polymetallic mineralization in the Stewart Camp including past producing mines including Eskay Creek, Granduc, and Silbak-Premiere.
The Oweegee Property is underlain by the favourable Hazelton Group rocks and surrounded by Bowser Lake Group sediments. The geology at Oweegee includes the mapped fault contact of the Triassic Stuhini-Jurassic Hazelton Group rocks, which are proximal to many mineral deposits in the Stewart Camp. This contact, also known as the ‘Kyba red line’, has been identified by Nelson and Kyba (2014 (*1*)) as a favourable geological environment for the formation of major metal deposits in proximal Hazelton Group rocks
*1*. Nelson, J., and Kyba, J., 2014, Structural and stratigraphic control of porphyry and related mineralization in the Treaty Glacier – KSM – Brucejack – Stewart trend of western Stikinia. In: Geological Fieldwork 2013, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2014-1, pp. 111-140.
Ground work has been focused on mineralized zones on the Deltaic and Delta West Grids. The Deltaic Grid displays Au-Cu porphyry mineralization. Historic drill result highlights include drill hole DC07-03 returning 0.189 g Au/t and 0.074% Cu over a 138.67 m core length including a higher-grade Au section that contained 0.468 g Au/t and 0.11% Cu over 17.14 m and a higher Cu section that returned 0.140 g Au/t and 0.17% Cu over 17.08 m (Molloy 2008(*2*)). In addition, anomalous Au, Cu, Pb, and Zn values associated with a felsic dome at the South Meadow area of the Deltaic Grid suggest VMS feeder mineralization.
*2*. Molloy, D. E., 2008, Report on the 2007 Exploration Program carried out on the Deltaic Grid of the Stewart Property; for the Weekes’ Investment Group, ARIS # 30126a, b, c, p. 243, 41, 12.
On the western side of the Oweegee Dome, the Delta West Grid is characterized by buried, stratabound base metal Zn-Cu-Ag VMS type mineralization.
Relatively little property wide geochemistry, mapping, or drilling has been conducted on the property. The recently built local infrastructure increases road access to much more of the property, which may decrease discovery costs.
An initial Phase 1 exploration program is recommended to further evaluate the targets identified on the Oweegee Dome Property to date. Integration and interpretation of all historic geological, geochemical and geophysical datasets should precede field work. Geologic mapping and sampling, supported with ground magnetic and IP surveys, would further confirm and delineate the multiple recent and previously identified exploration and drill targets. The preceding work will allow prioritization of drill targets and enhance likelihood of drill success.
Millrock currently has an option agreement on Oweegee Dome project with Sojourn Ventures Inc., (TSX-V: SOJ) (“Sojourn”), which may purchase a 100% interest (subject to a royalty provision) by issuing Sojourn shares.
“THE TECHNICAL INFORMATION WITHIN THIS DOCUMENT HAS BEEN REVIEWED AND APPROVED BY GREGORY A. BEISCHER, PRESIDENT & CEO OF MILLROCK RESOURCES INC. MR. BEISCHER IS A QUALIFIED PERSON AS DEFINED IN NI 43-101.
THE INFORMATION IN THIS SUMMARY HAS BEEN DERIVED FROM A NI-43-101 REPORT THAT WAS PREPARED BY SOJOURN AND HAS BEEN SUBMITTED TO THE TSX-V. A COPY OF THE REPORT CAN BE FOUND AT THIS LINK.