Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $45.00
- Locality
- Koashva Mt., Khibiny Massif, Kola Peninsula, Russia
- Formula
- SrCaCa3(PO4)3F
- Size
- 4 x 3 x 2 cm - Miniature
- Tagged
- phosphate
- Special Info
- Type Locality
Tannish orange crystalline grains. Fluorcaphite is basically a strontium apatite.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- (Zn,Al)3(Si,Al)2O5(OH)4
- Size
- 0.4 x 0.3 x .02 cm - Thumbnail
Tiny yellow, pearly, hexagonal plates of nickel rich Fraipontite. The specimen originated from Dr. Georg Gebhard, with the label stating (Ni) and 3rd oxidation zone. Warning - it is a small 4mm piece. The matrix looks like Cerussite.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Franklin, Sussex Co., New Jersey, United States
- Formula
- ZnFe3+2O4
- Size
- 11 x 5 x 6.5 cm - Cabinet
- Tagged
- Ore Minerals
This is a really fine big Franklin Ore specimen with huge black octahedral Franklinite crystals to 3cm on course crystalline Franklinite and Willemite matrix. Of course all the Willemite fluoresces bright green under UV light, see pop-up photo. Also, a label from the University of Chicago - Dept of Geological Sciences accompanies this specimen with the number 1093 that corresponds to a number on the side of the specimen. The specimen most likely originated from Paul Moore.
According to the Bateman's classic work "Economic Mineral Deposits" - Second Edition (1950), which although it is over 60 years old still has great relevant information on deposits, the Franklin-Sterling Hill Zinc District has been mined since 1840 and is unique with no known counterpart in the world.
- Availability
- Available
- Price
- $35.00
- Locality
- Zinkwand, Obertalbach valley, Schladming, Styria, Austria
- Formula
- Ni(As,S)2
- Size
- 0.8 x 1 x 0.5 cm - Thumbnail
- Tagged
- sulfide
- Special Info
- Type Locality
- Special Info
- Microprobed
Small 1cm chip with silvery anhedral Gersdorffite and Nickeline crystals visible under magnification.
The Cureton Collectino label has this as Gersdorffite-Pa3, a polytype naming system that apparently is no longer used for this species.
Microprobe confirmed.
- Availability
- Available
- Price
- $55.00
- Locality
- prospect near Rhyolite Pass, Mineral Co., Nevada, United States
- Formula
- Cu2+3(AsO4)(OH)3
- Size
- 2.5 x 2 x 1.5 cm - Thumbnail
- Tagged
- arsenate, copper
- Special Info
- XRD Confirmed
A 2mm pit filled with 0.5mm crystals of micro bluish green Gilmarite and dark green Cornwallite. XRD confirmed,
- Availability
- Available
- Price
- $50.00
- Locality
- prospect near Rhyolite Pass, Mineral Co., Nevada, United States
- Formula
- Cu2+3(AsO4)(OH)3
- Size
- 3 x 2.5 x 2.5 cm - Thumbnail
- Tagged
- arsenate, copper
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Tiny little Gilmarite crystals in a 1.5mm vug with Cornwallite. This is a little known locality. XRD/EDS.
