The brownfield Brandywine deposit has undergone several exploration phases including bulk tonnage shipments to smelters, extensive drilling, and extensive geochemical and geophysical studies.
Brandywine NI-43-101 Technical Report
Bonanza Gold Grades in excess of 1 ounce gold per ton over 1.52 meters (5 feet) have been reported at Brandywine at the Dave’s Pond zone at depths of less than 30 meters.
Visible gold is present in assayed, and unassayed sections of the 3 hole 2010 drill program core at Dave’s Pond. The core has been recovered from secure storage and has been relogged, split, and reassayed. (see BHS2019-29)
The Brandywine deposit falls within a class of high gold-silver volcanogenic massive sulphide deposits that include the Eskay Creek deposit of northern British Columbia; the Green’s Creek deposit on Admiralty Island near Juneau, Alaska; the Bawdwin deposit in Myanmar; and the Rosebery deposit of Tasmania. This family of deposits is particularly silver and lead rich with important gold, zinc, copper and other metal values, as summarized below.
The Brandywine Project lies approximately 14 Km south of Whistler BC
The most definitive indications of the nature of the mineralization on the property are two smelter shipments as follows:
- A 50 ton bulk sample in 1967 grading 83.1 g/t gold, 354 g/t silver, 9.9% lead, 7.4% zinc, 0.30% copper to East Helena , Montana, smelter from the Silver Tunnel and Main Zone (Melling, 1994, Walus 2011)
- A 500 ton sample grading 14.2% lead, 12.5% zinc, 339 g/t silver, and 2.57 g/t gold to the Cominco Smelter in Trail in 1977 (Walus, 2011, Melling, 1994).
Several historical resources have been published previously, including 112 000 tonnes reported to average 10 oz Ag/ton;.0.03 oz Au/ton; 0.19% lead and 0.34% zinc.
The soil anomaly images above were produced by Placer Dome
Additionally, the reports identify the presence of Pyrargyrite (Ruby Silver), as well as the rare silver specimen minerals, diasphorite, fizelyite, (rare silver-lead-antimony Sulfosalt) semseyeyite, miargyrite,(silver, antimony sulphide) and prostilpnite (Ag, Sb, S), all indicative of the presence of high grade silver, as well as the rare mineral hubernite on the property.
The Company advises that the information presented herein, including the accompanying MinFile Reports, is of a historic nature. Historic soil anomalies (above) drill hole data, production estimates and grades reported have not been verified. A qualified person has not done sufficient work to verify the historical estimates nor classify the historic estimates as current mineral resources or mineral reserves, and the Company is not treating the historical estimates as current mineral resources or mineral reserves.
While the various historical tonnage calculations have not been verified by a Qualified Person, the detailed drill data available from extensive work by several exploration groups is preserved, and will serve as a basis for confirmation drilling of the known sulphide mineralization target areas.
For reference, the four analogous deposits mentioned earlier serve as an indication of the nature of mineralization that may be the target for exploration on the Brandywine property. The reader is cautioned that there are no known reserves or resources on the subject property under National Instrument 43-101, and if discovered through exploration, there can be no assurance that any such deposit may be economically recoverable.
The four deposits referenced are:
- Eskay Creek, British Columbia, Canada.
Skeena Resources (Northern Miner April 1-14, 2019) announced 12.7 million tonnes indicated resource grading 4.5 g/t gold, 117 g/t silver , pit constrained, and 13.5 million tonnes inferred grading 2.2 g/t gold and 42g/t silver. Indicated underground resources are 819,000 tonnes grading 6.4 g/t gold, 139g/t silver, plus inferred resource of 295,000 tonnes grading 7.1 g/t gold and 82 g/t silver.
Between 1994 and 2008 this mine produced 3.3 million oz gold and 160 million oz silver from production grading 45 g/t gold and 2,224 g/t silver.
- Green’s Creek, Admiralty Island, Alaska, USA.
Proven and Probable Reserves 9.270 million tons 11.5 oz/t silver , 0.09 oz/t gold, 2.8% lead, 7.6 % zinc; Measured and Indicated Resource 7.46 million tons, 13 oz/t silver, 0.1 oz/t gold, 3.1% lead, 8.2% zinc; Inferred Resource 2.47 million tons, 14.6 oz/t silver, 0.09 oz/t gold, 3.0% lead, 7.3% zinc. This deposit has been in production since 1989. Source: Hecla Mining Company website, 2018.
- Bawdwin Deposit, Myanmar.
Myanmar Metals Limited (current 2019 website) quote a global indicated and inferred mineral resource estimate at 94.2 million tonnes grading 4.2% lead, 107 g/t silver, 2.1%zinc, and 0.2% copper. A high-grade core is estimated at 45 million tonnes at 7.6% lead, 176 g/t silver, 3.1% zinc and 0.3% copper. Mining has taken place from this deposit for over 400 years, largely for silver recovery in early years.
- Rosebery, Tasmania.
MMG Limited website , June 30, 2018, Measured +Indicated +Inferred Reserves 18.1 million tonnes, at 0.24% copper, 7.9% zinc, 2.7% lead, 98 g/t silver, 1.3g/t gold. The deposit has been in continuous production since 1936.
Bayhorse Silver has undertaken a substantive re-evaluation of all data available on the project, and is currently relogging and assaying historic drill core. Drill permitting is underway for a late fall drilling program on the high gold grade DP Zone,and on the high silver grade PD Zone, identified by Placer Dome.