Fine Mineral Specimens Over $50
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- CuS
- Size
- 8 x 4.5 x 8 cm - Sm Cabinet
- Tagged
- Ore Minerals
A thick seam of foliated platy Covellite with the typical blue-purple iridescence containing about 66% Copper making it one of the chief economic ores of Copper.
Discovered in 1877, the Butte district was one of the most important mining districts in the USA. Butte has produced millions of tons of Copper and considerable amounts of Silver Gold, Lead and Zinc as well as some incredibly and highly collectible mineral specimens. During its hey day, Butte was considered the "richest hill on earth". The mineral deposits of Butte fueled the ever increasing demands of our industrial machine and in the process helped build the country to what it is today. Unfortunately, the consequence of these societal demands of the past are the environmental issues inherited today.
- Availability
- Sold
- Locality
- Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo
- Formula
- Cu(UO2)2(SiO3OH)2·6H2O
- Size
- 6.5 x 3.5 x 3 cm - Sm Cabinet
- Tagged
- copper
- Special Info
- Radioactive!!
Bright green sprays of Cuprosklodowskite with dark micro Vandenbrandeite. Radioactive!
I would prefer to deliver this to Tucson, if the buyer is going.
- Availability
- Available
- Price
- $75.00
- Locality
- Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia
- Formula
- Y4Cu(CO3)4Cl(OH)5·2H2O
- Size
- 5.5 x 4 x 1 cm - Sm Cabinet
- Tagged
- carbonate, copper, REE mineral
- Special Info
- Type Locality
Blue patches of Decrespignyite-(Y).
- Availability
- Available
- Price
- $60.00
- Locality
- Merelani Hills, Umba Valley, Lelatema Mts., Arusha, Tanzania
- Formula
- CaMgSi2O6
- Size
- 2 x 1.3 x 1.2 cm - Thumbnail
Stunning green, gemmy, Diopside crystal.
- Availability
- Available
- Price
- $55.00
- Locality
- Mohawk mine, Keweenaw Co., Michigan, United States
- Formula
- Cu3As
- Size
- 8 x 5.5 x 4 cm - Sm Cabinet
- Tagged
- sulfide, copper
- Special Info
- Antique Specimen
Antique specimen with spotty black Domeykite and Algodinite.
- Availability
- Available
- Price
- $75.00
- Locality
- ZCA #4 mine, Balmat, St. Lawrence Co., New York, United States
- Formula
- Mn2+MgSi2O6
- Size
- 4 x 3 x 1.3 cm - Miniature
- Special Info
- Type Locality
Dark reddish crystalline mass. Rare.
