Silver Bow Mining Intersects Massive Sulfide Mineralization Grading 8.20% CuEq over 0.82 Meters at the Rainbow Block
Silver Bow Mining drill hole SBM26-09 intersected 0.82 meters of massive sulfide mineralization on the Black Rock Copper Vein at the Rainbow Block in Butte, Montana, grading 8.20% copper equivalent (6.22% Cu, 207.1 g/t Ag, 0.27% Zn). The intercept sits roughly 30 meters below a copper-silver block shown as unmined in historical Anaconda records; true width is estimated at only 50-60% of the downhole length, and core recovery in the overlying interval was just 9%. A follow-up hole (SBM26-10) is drilling up-dip to test continuity, and assays from the Rainbow, Boston and Jersey Blue silver-zinc veins remain pending.
Key figures
- Ag grade
- 207.1 g/t
- Cu grade
- 6.22%
- Zn grade
- 0.27%
- Ageq grade
- 899.3 g/t
- Cueq grade
- 8.20%
- Depth to m
- 662.97
- Depth from m
- 662.15
- Intercept width m
- 0.82
- True width pct of downhole
- 50% to 60%
AI analysis
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