Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Panasqueira, Covilha, Castelo Branco dist., Portugal
- Formula
- Mg2PO4F
- Size
- Thumbnail 3x1.5x1cm
- Tagged
- phosphate
Orange cleavable mass with Arsenopyrite.
- Availability
- Sold
- Locality
- White Caps mine, Nye Co., Nevada, United States
- Formula
- (As,Sb)6As4S14
- Size
- Miniature 5x1x0.2cm
These are golden yellow fibrous crystals to over 3cm and are impossible to obtain these days. Please refer to the prov. tab for background. The specimen was from the collection of Ernest Chapman of Manhattan, Nevada (near the mine) and acquired in 1953. Formerly of the Forrest and Barbara Cureton II collection. Only copies of these labels are available.
- Availability
- Sold
- Locality
- White Elephant mine, Custer Co., South Dakota, United States
- Formula
- H2Ca2Fe3+6(AsO4)5(PO4)3ยท14H2O
- Size
- Thumbnail 1.5x1.5x0.5cm
- Tagged
- phosphate , arsenate , pegmatite mineral
- Special Info
- Type Locality
This is a type localitiy specimen of Walentaite, a mineral first discovered at the White Elephant mine. It has subsequently been found at another five localities worldwide. The crystals on this specimen are flat-lying and radial to about 0.3mm. It is small, a thumbnail but shows good crystals across the face.
It carries a Willard L. Roberts label.
- Availability
- Sold
- Locality
- Esquire #8 claim, Big Creek, Fresno Co., California, United States
- Formula
- BaCa2Si3O9
- Size
- SmCabinet 6x2x2.5cm
- Tagged
- Ba Silicates
- Special Info
- Fluorescent
Granular Walstromite crystals to 1mm scattered on one side of specimen showing a bright orange response to SW UV. Comes with a label signed by Robert Waltsrom.
- Availability
- Sold
- Locality
- Esquire #8 claim, Big Creek, Fresno Co., California, United States
- Formula
- BaCa2Si3O9
- Size
- Miniature 4.5x3.5x3cm
- Tagged
- Ba Silicates
- Special Info
- Fluorescent
Faint green large plates of Walstromite to 1.5cm which gives a nice orange response to LW and SW UV. Signed label from the man who the mineral is named after, Robert E. Walstrom. Robert mined these specimens and brought them to market.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Esquire #7 claim, Big Creek, Fresno Co., California, United States
- Formula
- BaCa2Si3O9
- Size
- SmCabinet 7x4.5x3cm
- Special Info
- Type Locality
Sanbornite rich matrix with one side loaded with fluorecent orange Waltromite. The photos show the fluorescent nature of Walstromite and also some of the isolated crystal grains. Minor Gillespite on the back side.
