











Fine Mineral Specimens Over $50
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- Cu2+6Ce(AsO4)3(OH)6·3H2O
- Size
- 2 x 1.2 x 1.2 cm - Thumbnail
- Tagged
- arsenate, copper, REE mineral
Green fibrous crystals.
- Availability
- Sold
- Locality
- Widowmaker mine, White Canyon, San Juan Co., Utah, United States
- Formula
- Cu2+3SO4(OH)4
- Size
- 6 x 8 x 2.5 cm - Sm Cabinet
- Tagged
- copper
Green finely crystalline Antlerite with carbonatecyanotrichite on the backside.
- Availability
- Available
- Price
- $50.00
- Locality
- Freiberg dist., Erzgebirge, Saxony, Germany
- Formula
- FeAsS
- Size
- 3 x 3 x 1.5 cm - Thumbnail
- Tagged
- sulfide
- Special Info
- Antique Specimen
Cluster of Arsenopyrite crystals to 6mm with Quartz. Old specimen deaccessioned by the A.E. Seamun Museum.
- Availability
- Available
- Price
- $50.00
- Locality
- Majuba Hill mine, Pershing Co., Nevada, United States
- Formula
- CuFe3+2(AsO4)2(OH)2·4H2O
- Size
- 7 x 5 x 3 cm - Sm Cabinet
Lime green acicular sprays lining large vug.
- Availability
- Sold
- Locality
- Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy
- Formula
- KBF4
- Size
- 3.5 x 1 x 1 cm - Miniature
- Special Info
- Type Locality
Lemon yellow, earthy masses of Avogadrite in a vial. The masses are around 1cm. Avogadrite is named after Amedeo Carlo Avogadro(1776 – 1856) an Italian physicist who determined the molecular theory that the number of molecules per mole of substance is exactly 6.02214076×10^23. It is otherwise known as "Avogadro constant". It is used to this day in chemical reactions. I use it all the time when I make pizza.
Avogadrite is a three locality mineral.
- Availability
- Available
- Price
- $125.00
- Reduced Price
- $75.00
- Locality
- Bombay, Maharashta, India
- Formula
- Ca2Fe2+Fe3+Si5O14(OH)
- Size
- 6 x 2.5 x 2.5 cm - Sm Cabinet
Gorgeous, large, Babingtonite crystal to a whopping 1.7cm on spheroidal Prehnite with Quartz crystals.