Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $250.00
- Reduced Price
- $150.00
- Locality
- Los Bordos mine, Elisa de Bordos, Copiapo, Atacama, Chile
- Formula
- Ag11Hg2
- Size
- 8 x 3 x 5.5 cm - Sm Cabinet
- Tagged
- silver
Large flexible, thin plates of tarnished Eugenite. The exterior is a dull grey, but the subsurface is goldish to shiny grey-gold. Eugenite is a rare almalgam with Gold. The large plate at the center is 2cm across. Excellent specimen.
- Availability
- Sold
- Locality
- Buckwheat pit, Franklin, Sussex Co., New Jersey, United States
- Formula
- Mn2+2Mn3+AsO4(OH)4
- Size
- Micromount
- Tagged
- arsenate
Yellowish brown plates. There are three or more crystals on this small 1cm piece in a micromount. In association is a white mineral with striations assumed to be Cahnite.
- Availability
- Sold
- Locality
- Little Patsy pegmatite, Jefferson Co., Colorado, United States
- Formula
- CeF3
- Size
- 2.5 x 1.5 x 0.8 cm - Thumbnail
- Tagged
- REE mineral
Two excellent crystals in combo to 1.7cm. The Little Patsy boast the best and largest crystals in the world. This one is quite nice with good form on both crystals.
- 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
- Siglo Viente mine, Llallagua, Bolivia
- Formula
- Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14
- Size
- 6.5 x 5 x 5 cm - Sm Cabinet
- Tagged
- sulfide, tin
Dark silvery mass composed of compact platey Frankeite. Minor Pyrite crystals to 8mm. Frankeite is a rare tin mineral found in only two localities in the US.
- 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.
