Bornite on Quartz
Availability: 1 in stock
A rounded dodecahedral 2.3cm crystal centers this quartz laden piece with tan (feldspathic?) crystals indiscriminately dispersed. The locality states “Old Hearst Mountain, Frenchtown” but is more likely from one of the Butte area mines and refers to one of the holdings of the father of mining (George Randolph Hearst). Likely form pre-1960. I did find the main crystal to be a touch wobbly so I placed a tiny spot of super glue at the back (in photo) to stabilize. Ex Jim and Paula Wilson collection.
Locality: Old Hearst Mountain, Frenchtown, Montana
Composition: copper iron sulfide