Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Foote mine, Cleveland Co., North Carolina, United States
- Formula
- Ca2Mn2+(PO4)2·2H2O
- Size
- SmCabinet 9x5x1.5cm
- Tagged
- phosphate , pegmatite mineral
Foote mine may hold the record for the size of Fairfieldite crystals. This specimen is no exception with groups of platy Fairfieldite to 7mm. Ordinarily the species is found in the 1-2mm range.
- Availability
- Sold
- Locality
- Tip Top mine, Custer Co., South Dakota, United States
- Formula
- Ca2Mn2+(PO4)2·2H2O
- Size
- Cabinet 10x6.5x6cm
- Tagged
- phosphate , pegmatite mineral
Larger cabinet specimen with a zone of white, thin, plates of Fairfieldite-Messelite crystals to 4-5mm, It occurs along the contact with the parent Triphylite-Heterosite matrix. Jahnsite occurs mostly on the Fairfieldite as nut brown, striated crytals to 1mm. It is the original Jahnsite-(CaMnMg).
- Availability
- Sold
- Locality
- Foote mine, Cleveland Co., North Carolina, United States
- Formula
- Ca2Mn2+(PO4)2·2H2O
- Size
- SmCabinet 9x5x2cm
- Tagged
- phosphate , pegmatite mineral
Plate of feldspar with abundant murky white and rice-shaped crystals of Fairfieldite to 2mm. This is an excellent specimen, not only for this locality but for any pegmatite locality.
- Availability
- Sold
- Locality
- Foote mine, Cleveland Co., North Carolina, United States
- Formula
- Ca2Mn2+(PO4)2·2H2O
- Size
- SmCabinet 5.5x8x3cm
- Tagged
- phosphate
Frosted white spherical aggregates of Fairfieldite to 3mm on a piece of Holmquistite matrix. For the species, this is an outstanding specimen.
This piece was on an update a couple weeks ago, but the buyer changed their mind and it is such and excellent piece from Foote I thought it deserved another chance on a New Addition.
- Availability
- Sold
- Locality
- Foote mine, Cleveland Co., North Carolina, United States
- Formula
- Ca2Mn2+(PO4)2·2H2O
- Size
- Miniature 4x5x2.5cm
- Tagged
- phosphate
Good coverage of white thin tabular Fairfieldite crystals to 1mm with translucent orange spheroidal Fluorapatite crystals to 2mm. Nice combo piece!
- Availability
- Sold
- Locality
- Bayerland mine, Pfaffenreuth, Upper Palatinate, Bavaria, Germany
- Formula
- Pb3Sb2S6
- Size
- SmCabinet 6x3x2cm
- Tagged
- sulfide
- Special Info
- Type Locality
Falkmanite is a mineral closely related to Boulangerite but with less lead. Mindat reports that: "A solution of the crystal structure of falkmanite is necessary for its definite classification." The XRD patterns of boulangerite and falkmanite are similar. Indeed some textbooks equate it to Boulangerite. Most recent Hrysl's "Minerals and their Localities" it is listed as a unique mineral.
This specimen's splendid habit is a metallic compact fibrous mass with a beautiful silky finish.
