Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Manganese mine, Copper Harbor, Keweenaw Co., Michigan
- Formula
- Ca2Mn3+3(SiO4)(Si2O7)(OH)3
- Size
- SmCabinet 6x4x3cm
- Special Info
- Type Locality
Deep rusty red radial groups of Macfallite to 7mm in black massive Braunite. This material carries a Paul Moore label from the Universitty of Chicago. Moore described Macfallite so I am assuming this stuff is type material. Macfallite is limited to only six occurences worldwide.
- Availability
- Sold
- Locality
- Manganese mine, Copper Harbor, Keweenaw Co., Michigan, United States
- Formula
- Ca2Mn3+3(SiO4)(Si2O7)(OH)3
- Size
- SmCabinet 8x5x4cm
Cabinet specimen full of good radiating crystals of reddesh brown Macfallite. This is an ex-University of Chicago/Paul Moore specimen.
- Availability
- Sold
- Locality
- Manganese mine, Copper Harbor, Keweenaw Co., Michigan, United States
- Formula
- Ca2Mn3+3(SiO4)(Si2O7)(OH)3
- Size
- Miniature 3.5x3.5x3cm
Excellent rusty red radial groups of this rare manganese silicate.
- Availability
- Sold
- Locality
- Slick Rock, San Miguel Co., Colorado, United States
- Formula
- Fe3+Te4+2O5(OH)
- Size
- SmCabinet 7x3.5x3.5cm
- Tagged
- tellurium
Hundreds of excellent green, lustrous pseudododecahedral crystals to about 0.5mm each.
- 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.
