Fine Mineral Specimens Over $50
- Availability
- Sold
- Locality
- Esquire #7 claim, Big Creek, Fresno Co., California, United States
- Formula
- BaSi2O5·4H2O
- Size
- 2.5 x 1.5 x 1.5 cm - Thumbnail
- Special Info
- Type Locality
Colorless to white plates of Bigcreekite in a 5x5mm area with deep striations. Bigcreekite is a very rare barium silicate occuring at three localities in California but no where else. The specimen is from the Robert Walstrom collection recently obtained.
- Availability
- Available
- Price
- $225.00
- Locality
- Schneeberg dist., Erzgebirge, Saxony, Germany
- Formula
- Bi
- Size
- 6.5 x 5 x 3 cm - Sm Cabinet
- Tagged
- native element
Brassy colored Bismuth crystals to 19mm embedded in dull, silvery Safflorite matrix.
- Availability
- Sold
- Size
- Not Specified
- Tagged
- maps books, black hills, history, maps, books, book, map, CD, DVD
Black Hills Ghost Town & Ghost Mine Maps
by Dale Baiety
This DVD-R "data" disk contains topographical maps and aerial photo images that cover the Black Hills of South Dakota from north of Spearfish, SD, to near the South Dakota/Nebraska border. The east to west map coverage spans from east of Rapid City to the Wyoming border.
365,420 aerial photo images create a seamless mosaic that zooms from 64-meter to 1-meter resolution. 27.760 topographical map segments allow zooming from 32-meter to 4-meter resolution. The cursor shows latitude/longitude information for any location. Waypoint overlays identify 386 Black Hills ghost/historic towns and 999 Black Hills ghost mines.
A GPS is not needed to use the maps, but if the user does have a GPS, the included USAPhotoMaps program allows transfer of data in/out of Windows based computers. A laptop computer will supply real time on screen tracking of most GPS units. A Windows computer system with DVD-R "data" drove amd 2.4 Gig of hard drive space is required to install the program on your computer.
- Availability
- Sold
- Locality
- Ermakovskoe beryllium deposit, Buryatia, Siberia, Russia
- Formula
- Ca4Be3AlSi9O25(OH)3
- Size
- 1.5 x 0.7 x 0.5 cm - Thumbnail
- Tagged
- beryllium, pegmatite mineral
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Bohseite is a rare beryllium mineral found at only 7 localities worldwide. This specimen is yellow and compact fibrous. It is from the private stock of Dr. Igor Pekov, who performed the analysis.
- Availability
- Available
- Price
- $165.00
- Reduced Price
- $85.00
- Locality
- Three Oaks Gap, Polk Co., Arkansas, United States
- Formula
- (Fe3+)24AlO6(PO4)17(OH)12·75H2O
- Size
- 7 x 4.5 x 2 cm - Sm Cabinet
- Tagged
- phosphate
An excellent specimen of beautiful Cacoxenite fibrous sprays and dark reddish brown spheroids to 1mm. Coverage on both sides.
- Availability
- Sold
- Locality
- Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
- Formula
- (Fe3+)24AlO6(PO4)17(OH)12·75H2O
- Size
- 7 x 4 x 2 cm - Sm Cabinet
- Tagged
- phosphate
This specimen is covered with yellow to golden brown spheroidal crystal groups to 1mm of radiating Cacoxenite crystals. A superb specimen from this important mineral locality.
