Search Archived Mineral Specimens
- Sold Price
- $50.00
- Featured
- Featured in Special Editions
- Locality
- Nevada mine, Whetstone Mountains, Cochise Co., Arizona, United States
- Size
- Cabinet 13x3x9cm
This is a really neat specimen of banded Rhyolite with 2-5mm seams of platy blue crystalline Bornite. This piece actually gave us the idea for an Ore Specimen Special Edition and is just a really interesting piece!
Unfortunately I couldn't find any good resources on this particular mine, but I'm sure it's out there somewhere and I'd definitely be interested in the geologic processes that formed a mineralized banded Rhyolite like thi
- Sold Price
- $65.00
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- Cu5FeS4
- Size
- SmCabinet 7x4x3cm
- Tagged
- sulfide , ore specimen
Large slightly iridescent Bornite crystal aggregate to 2cm with individual crystals to 1cm. The specimen shows how the quartz vein is mineralized and zoned from Pyrite on the fringes to copper bearing sulfide at the center with a large open cavity.
- Sold Price
- $75.00
- Locality
- Mountain Consolidated Mine, Butte, Silver Bow Co., Montana, United States
- Formula
- Cu5FeS4
- Size
- SmCabinet 6x6x3cm
- Tagged
- sulfide , ore specimen
Aesthetic specimen of Bornite matrix with flat-lying white Calcite crystals to 3cm. On the side you can see the clear definition of the ore vein as it penetrated the Butte quartz monzonite matrix.
- Sold Price
- $300.00
- Locality
- Stewart Mine, Butte, Silver Bow Co., Montana, United States
- Formula
- Cu5FeS4
- Size
- SmCabinet 5.5x4.5x1.5cm
- Tagged
- sulfide
An awesome specimen of iridescent Bornite coating octahedral Pyrite crystals to 1cm with micro crystals of Quartz. Look close at the photos, these are actually cubo-octahedral crystals. According to Jenkins & Lorengo (Min. Record v. 33, n. 1 2002), Pyrite is rather abundant at Butte but they also report octahedral crystals as rare in Main Stage veins. The Stewart is a Main stage Anaconda vein.
- Sold Price
- $40.00
- Locality
- St. Joe #3 mine, Balmat, St. Lawrence Co., New York, United States
- Formula
- Cu5FeS4
- Size
- SmCabinet 5x8x2.5cm
- Tagged
- sulfide
Solid piece of 'peacock ore' or Bornite mixed with Chalcopyrite that has a superb mottled iridescent tarnish with colors from blue to purple and green to brassy yellow.
- Sold Price
- $375.00
- Locality
- Eagle Picher mine, Shullsburg, Lafayette Co., Wisconsin, United States
- Formula
- Cu5FeS4
- Size
- Cabinet 9x10x2cm
- Tagged
- sulfide
Large plate of bluish to purple iridescent Bornite with crystals to 6mm. Specimens such as these are seldom offered on the market. Not only is this a hard locality to obtain, but the natural Bornite patina adds to the appeal of this sulfide. Mines in this district a virtually extinct as they have either been reclaimed or swallowed up by the urban sprawl. Excellent specimen.
