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- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Silverfields mine, Cobalt dist., Ontario, Canada
- Formula
- PbS
- Size
- 9.5 x 8 x 1 cm - Cabinet
- Tagged
- Ore Minerals
Excellent slab of Galena with Arsenopyrite and Chalcopyrite mostly likely from Petruk's group 5 mineralization, the Fe-As assemblage. This assemblage is characterized be a high content of Arsenopyrite. Cobalt was a world class Silver deposit which was discovered by a blacksmith in 1903. The pop-up photos show some unique and unusual ore textures.
- Availability
- Sold
- Locality
- Madan dist, Rhodope Mts, Smolyan Oblast, Bulgaria
- Formula
- PbS
- Size
- 12 x 8 x 6 cm - Cabinet
- Tagged
- sulfide
Brilliant and flashy Galena crystals to 1cm. Of course it is much better looking in-hand as you can rock it back and forth and watch it flash. The crystal faces are mirror-like. Many of the crystals have a small corner showing an octahedral face and one set of crystals show a stacked set resembling a staircase. Get it in-hand and you will love it.
- Availability
- Sold
- Locality
- Brushy Creek mine, Reynolds Co., Missouri, United States
- Formula
- PbS
- Size
- 3.5 x 4 x 3.3 cm - Miniature
- Tagged
- sulfide
Good structure in these Galena cubes to 2.3 cm with nice smaller growths.
- Availability
- Available
- Price
- $40.00
- Locality
- Garron Point, Co. Antrim, Northern Ireland
- Formula
- NaCa2.5(Si10Al6)O32ยท13H2O
- Size
- 7 x 4.5 x 4.5 cm - Sm Cabinet
A 1.5cm amygdule filled with charactertic Garrone with partings (?). There are many other amygdules filled with other zeolites, but mainly Chabazite and one with Natrolite.
- Availability
- Sold
- Locality
- Tachgagalt mine, Ouarzazate prov., Morocco
- Formula
- Ca4Mn3+3(BO3)3(CO3)(O,OH)3
- Size
- 5.5 x 3 x 2.5 cm - Sm Cabinet
Black bladed masses of Gaudefroyite with yellowish crystalline Jouravskite.
- Availability
- Available
- Price
- $30.00
- Size
- Not Specified
- Tagged
- maps books, black hills, history, maps, books, book, map
Geology of the Black Hills of South Dakota
Documenting geology and maps for the following regions:
Berne Quadrangle
Blue Lead Mountain
Fourmile Quadrangle
Galena-Roubaix District
Gold in the Black Hills – How New Deposits May Be Found
Helen Beryl, Elkhorn & Tin Mountain Pegmatites
Hill City Quadrangle
Hugo Pegmatite
Nemo District
Peerless Pegmatite
Rochford District
Southern Black Hills Pegmatites