Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Esquire #1 claim, Rush Creek, Fresno Co., California, United States
- Formula
- BaSi2O5
- Size
- SmCabinet 7x3x0.5cm
A plate of faint green, translucent and heavy (barium) Sanbornite.
- Availability
- Sold
- Locality
- Fianel mine, Ausserferrera, Ferrera, Viamala, Grisons, Switzerland
- Formula
- Na2(Mn2+,Mn3+)10V5+Si11O34(OH)4
- Size
- Thumbnail 1.5x2.5x3cm
- Tagged
- vanadium
Fiery orange red crystal grains to 2mm in a mass 2.2 x 1cm.
- Availability
- Sold
- Locality
- Molinello mine, Graveglia Valley, Liguria, Italy
- Formula
- Na2(Mn2+,Mn3+)10V5+Si11O34(OH)4
- Size
- Miniature 4.5x3.5x2cm
- Tagged
- vanadium
Excellent bladed embedded orange crystals to 1mm.
- Availability
- Sold
- Locality
- Itrongay, Betroka dist., Anosy, Toliara, Madagascar
- Formula
- K(AlSi3)O8
- Size
- Thumbnail 3x1.5x1.5cm
- Special Info
- Gem Quality
Gemmy yellow and transulcent Sanidine showing cleavage - it is a partial of a larger crystal.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Riedener Berg, Volkesfield, Eifel, Rheinland-Pfalz, German
- Formula
- K(AlSi3)O8
- Size
- Thumbnail 2.5x2x1.5cm
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Translucent gemmy mass. Verified by Dr. Igor Pekov.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Ariccia, Alban Hills, Rome Prov., Latium, Italy
- Formula
- K(AlSi3)O8
- Size
- SmCabinet 6.5x4x3cm
Colorless and glassy nice crystals of Sanidine, a K-spar, which forms at high temperatures in potash-rich acid volcanics. These crystals are about 1-5mm.
