Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- San Miguel mine, Moctezuma, Sonora, Mexico
- Formula
- Fe3+Te4+2O5(OH)
- Size
- SmCabinet 7x6x4cm
- Tagged
- tellurium
Very rich specimen with hundreds of excellent tetragonal dipyramidal crystals to about 0.50mm. Very rare mineral worldwide.
- Availability
- Sold
- Locality
- Faraglione Ranni, Vulcano Island, Eolie Islands, Sicily, Italy
- Formula
- MgAl(SO4)2Cl·14H2O
- Size
- Thumbnail 3x3x2cm
- Special Info
- Type Locality
- Special Info
- Type Material
Light aqua-blue crystalline ball of Magnesioaubertite with white silky Pickeringerite. The specimen is from Georg Gebhard's collection and is part of the type specimen. See provenance tab.
- Availability
- Sold
- Locality
- Faraglione Ranni, Vulcano Island, Eolie Islands, Sicily, Italy
- Formula
- MgAl(SO4)2Cl·14H2O
- Size
- Miniature 5x3.5x2.5cm
- Special Info
- Type Locality
- Special Info
- Co-type material
A good sized specimen for co-type material. The mass is stark snow white and fibrous, soft and extremely light weight Pickeringite with light blue Magnesioaubertite. Extremely rare. See prov. tab.
- Availability
- Sold
- Locality
- Vesuvius, Naples, Campania, Italy
- Formula
- MgFe3+2O4
- Size
- Miniature 5x4.5x2cm
- Special Info
- Type Locality
A fabulous specimen of brilliant luster and modified octahedral crystals to 6mm. Many of the crystals display a cavernous growth habit. It is strongly magnetic with a black streak. The original labels called this Hematite, and it is definitely not. Vesuvius is the type locality for this member of the spinel group.
- Availability
- Sold
- Locality
- Iten'yurginskoye deposit, Tschukotka, Russia
- Formula
- Mg2(Fe3+,Sn,Mg)O2(BO3)
- Size
- Chip xxcm
A rare tin borate with radial needles in matrix. It was originally found in a magnesian borate skarn deposit.
- Availability
- Sold
- Locality
- Torrecillas mine, Salar Grande, Iquique, Tarapacá Region, Chile
- Formula
- Mg(AsO3OH) H2O
- Size
- Miniature 5x5x3.5cm
- Tagged
- arsenate
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Magnesiokoritnigite is a new mineral discovered by Maurizio Dini and published by Kampf and company in 2013. It is the magnesium member of the Koritnigite group and is shown in the photos as pink aggregates. So far, Torrecillas mine is the lone locality. The specimen itself is gorgeous with bright blue Lavendulen.
