The Vogel/Schumacher properties were acquired in March and December of 2005, respectively and are now part of Bell Creek Complex. Vogel/Schumacher covers approximately 1.6 kilometres between the high-grade Hoyle Pond and Bell Creek mines.
May 2, 2011 – Company announced an initial, shallow NI 43-101 resource at Vogel totaling 125,000 ounces of open-pit resources in the indicated category and 168,8000 ounces of open-pit and underground resources in the inferred category. The initial resources extend to a depth of approximately 400 metres with the deposit remaining open.
The Vogel/Schumacher deposit has been explored by several companies starting as early as 1968.
1987 – Canamax Resources Inc. leased property from then owner Mrs. Mary Vogel and over next several years completed field work and limited drilling on property.
1994 – Black Hawk Mining Inc. acquired the right to earn a 100% working interest in property, subject to royalties. Approximately 50 drill holes completed (1995/1996).
1996 – Back Hawk formed a joint venture with Kinross Gold Corporation allowing Kinross to earn a 50% interest. Drilling programs completed during 1996 and 1997. Kinross completed a feasibility study in 1997/1998 that provided a production scenario combining operations at Bell Creek Mine and Vogel. The joint venture was subsequently terminated.
1999 – Feasibility study completed for Black Hawk by ACA Howe International Ltd. Black Hawk and Glencairn Gold Corporation merged in 2003.
2005 – Lake Shore Gold acquired property in March 2005.
1985 – Canamax acquired lease on Schumacher III Estate lot.
1986 – Falconbridge optioned Schumacher Lot and completed limited drilling and other work over next few years.
1995 – Pentland-Firth Ventures Ltd. entered into lease agreement and undertook limited drilling and other work to the end of 1997. Two small historic, non NI 43-101 compliant resources generated during this period.
2005 – Lake Shore Gold acquired the property in December 2005.
The bulk of Lake Shore Gold’s exploration efforts at Vogel/Schumacher have been since the beginning of 2010. The gold mineralization at Vogel/Schumacher is hosted by a sequence of variably altered and veined steeply south dipping mafic volcanics. The alteration and veining occurs in two main forms either steeply dipping zones at the contact with ultramafic volcanics or as flat vein systems within the mafic volcanics.
Gold mineralization occurs in eight zones which are associated with quartz veining, pyrite mineralization and ankerite/albite/sericite alteration. Mineralized/altered zones vary from less than a metre to in excess of 20m in width. Gold values are associated with the quartz veining, the mineralized alteration envelopes about the veins and intervals of increased pyrite content. visible gold where present, is often associated with quartz veining.
The drilling completed by Lake Shore Gold on this deposit was designed to infill gaps in the mineral model and test along strike and at depth from the known mineralization providing enough data that would allow completion of the geological modelling and estimation of this initial resource. The modelling and resource estimation shows the presence of both a broad lower grade pitable resource and a narrower style of mineralization that would be more amenable to underground mining.
On May 2, 2011, Lake Shore Gold released an initial NI 43-101 resource for the Vogel/Schumacher deposit. The estimate included indicated a mineral resource of 2.2 million tonnes at an average grade of 1.75 grams per tonne containing 125,000 ounces of gold. In addition, inferred mineral resources of 1.5 million tonnes grading 3.60 grams per tonne containing 168,800 ounces of gold have been estimated for both open pit and underground resources. The deposit remains open down-dip.
||Capped Grade (gpt)*
||Contained Gold (ozs.)
|Measured & Indicated
- CIM definitions were followed for classifications of Mineral Resources.
- Mineral resources are estimated at a cut-off grade of 2.9 gpt/Au for Undergound and 0.63 gpt Au for open pit resources.
- Mineral resources are estimated using an average long-term gold price of US$1,125 per ounce and a US$/C$ exchange rate of 0.95 and US$1,150 per ounce for open pit resources.
- A minimum mining width of approximately two metres was used for underground resources.
- Capped gold grades are used in estimating the mineral resource average grade.
- Sums may not add due to rounding.
- Mr. Robert Kusins, B.Sc. P. Geo., being the Qualified Person for the resource estimate at Vogel.