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Download hereGENERAL DESCRIPTION
Schoenfliesite is a tin and magnesium hydroxide, formed by weathering within zones of contact metamorphism. It can also be formed on objects containing of tin.
It forms fibrous masses associated with cassiterite or small grains.
It is colourless, but can have a colour brown-more orange. The deposits are rare for this species: Brooks Mountain in Alaska, the district of Pitkäranta in Russia, Sungai Gow in Malaysia, Zlaty Kopec in Czech Republic and Damoshan in the province of Yunnan in China.
The place of conservation of the type of this species (from the Brooks Mountain, Alaska) is not known.
HISTORY : Species dedicated to the German mathematician Arthur Moritz Schoenflies (1853-1928)
Species first described in 1971 by Georges Tobias Faust (1908-1985) and Waldemar Theodore Schaller, American mineralogists
Type-locality: Brooks Mountains, Seward Peninsula, Alaska, USA
CHEMICAL FORMULA : MgSn(OH)6
CRYSTAL SYSTEM : Cubic
COLOR : Colorless
DIAPHANIETY : Transparent
LUSTER : Vitreous
STREAK : White
MORPHOLOGIE : Tiny grains, massive, fibrous
HARDNESS : 4,0-4,5
CHEMICAL CLASS: 3,49
DENSITY : IV - Oxides and hydroxides
GROUP : Schoenfliesite
STRUNZ CLASS BEFORE 2001 : 4/F.16-10
STRUNZ CLASS AFTER 2001 : 4.FL.10
