He went on to add, "We have also identified that a large amount of the past mining was achieved by driving adits horizontally along the Greyhound shear with no guidance from geological mapping, geophysical surveys, or diamond drilling. Although past operators were still able to return strong grades from historic adits, more recent work on the property has suggested the highest-grade mineralization is oriented vertically and provides opportunity for discovery above and below previously mined areas. The team is excited to apply this new knowledge as we utilize modern exploration techniques for the first time in this property's history."
Through use of multiple data sources, Metallis' technical team has been able to summarize the property's history and expand on the understanding of each prospective showing. When possible, more recent rock sampling and reporting has been prioritized.
Exploration at the
In 1979, Greyhound Mining and Milling (the current claim owners) began excavating the Lower Rufus Adit, located 140 m southeast of the Upper Rufus portal. This new adit was driven 300 m with material being transported to a mill offsite. It was further extended 152m between 1980 -1991 and intercepted strong zones of high-grade mineralization. A final shipment of material was sent in the year 2000.
More recent property examinations have detailed several sampling programs in the Lower Rufus Adit with the most thorough data being derived from Hornbaker (1988). A total of 17 channel samples were collected from footage 1331 to 1406 across the vein and demonstrated very robust high-grade mineralization along a total length of 22.9m. This interval returned an average grade (using a minimum width of 5 feet) of 0.06 oz/t Au and 26.38 oz/t Ag (2.05 g/t Au and 902 g/t Ag)*.
These high-grade sections have been referenced in historic reports as "ore-shoots" and represent the highest-grade zones returned in the Lower Rufus Adit (see table below). These tabular bodies are vertically oriented, and it is likely that past miners were unable to fully exploit them with horizontal adits. It is also important to highlight that moderate grade mineralization occurs along the entire length of the Lower Rufus Adit and is not restricted to these ore-shoots.
Note: The term "oreshoot" is used in this news release to describe a segment of a mineralized shear/vein which has a grade and width which might be economic. But, as no economic studies have been performed, there is no intension to imply that the material within an "oreshoot" will necessarily constitute "ore". |
The Bulldog mine, located on the north side of
During historic data compilation, the Metallis team discovered 20+ old newspaper articles dating from 1898 to 1905 that referenced extremely high grades at the
Further reporting by the
More recent historic sampling at the Bulldog has been restricted to single day visits with rock samples taken from trenches or waste piles. These rocks have returned elevated assays of 10-20 oz/t silver and grab samples as high as 69 oz/t silver. Descriptions of the surface showing detail a 10m thick shear zone with two high grade veins separated by lower grade material, as well as elevated base metals and bornite mineralization (Kershner, 1976). In 1980, approximately 12,000 tons of material was removed from this location although there is no documentation of any results, and it is possible this was from historically stockpiled material.
The Birdie Showing represents a parallel shear vein 125 m to the east of the Greyhound Shear. Minor production in the late 1800's is noted in historic reports that document approximately 100 feet (30 m) of workings being driven into
The
The
The Buckhorn Showing is located near the Northwest end of the Greyhound shear zone approximately 650m northwest of the
The Republican showing is the most northwesterly historic working completed along the Greyhound shear. This showing was worked in the early 1900's with minor historic workings still visable. Lance (1999) describes a single grab sample taken from a dump pile that returned 5.13 g/t Au and 1,691 g/t Ag*.
* | All grades mentioned in this release are historical in nature and can not be verified by |
The recently acquired Greyhound Property is in
Metallis trades under the symbols MTS on the
Heard, R.T. 1981.,
Geoogical Report on the
Kershner & Mashnurn, 1976.,
Reconnaissance Report on the
Lance, D.L. 1999.,
Geological report on the
Sampson, T, & Clark, M, 1981,
Geological Report on the Greyhound Mine
Longe, R. 1999.
A Summary Report on the
On behalf of the Board of Directors:
/s/ "Fiore Aliperti"
Chief Executive Officer, President, and Director
Web: www.metallisresources.com
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