Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $35.00
- Locality
- Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina
- Formula
- Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14
- Size
- 2.2 x 1 x 0.8 cm - Thumbnail
- Tagged
- sulfide, tin
Very fine granular Franckeite.
- 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
- $40.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- Mg2Mn3+O2(BO3)
- Size
- 1.3 x 0.5 x 0.4 cm - Thumbnail
Black needles to 3mm. Only two localities reported thus far; Langban and Nordmark districts. Fredrikssonite is a borate of the Ludwigite group.
- Availability
- Available
- Price
- $1,750.00
- Reduced Price
- $575.00
- Locality
- Nevel quarry, Newry, Oxford Co., Maine, United States
- Formula
- Na2(Be,Li)(Zr,Zn)2(PO4)4ยท1.5H2O
- Size
- Micromount
- Tagged
- phosphate, beryllium, pegmatite mineral
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
- Special Info
- Cotype
A tiny brown speck of Gainesite - This is the co-type specimen!! Note the label ex-Segeler & Ex- Yedlin.
- Availability
- Available
- Price
- $95.00
- Locality
- Milpo mine, Atacocha dist., Cerro de Pasco, Pasco, Peru
- Formula
- Pb14(Sb,As)6S23
- Size
- 3 x 2.5 x 1 cm - Thumbnail
- Tagged
- sulfide
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Outstanding crystals of Geocronite to 1mm crowning bright green Fluorite.
- Availability
- Available
- Price
- $45.00
- Locality
- Likasi mine, Katanga, Democratic Republic of Congo
- Formula
- Cu2NO3(OH)3
- Size
- Capsule
- Tagged
- copper
Cobalt blue acicular crystals 3mm.
