Silver-grey platy crystals of 'Zinnwaldite'3D ModelNoAI
Locality: Zinnwald (Germany) - Cínovec (Czech Republic)
No.: 5910
Size: 9.1 x 8 x 3.8 cm
Formula: Siderophyllite - KFe(II)2Al(Al2Si2O10)(OH)2; Polylithionite - KLi2Al(Si4O10)(F,OH)2
Description: This specimen comes from one of the most famous tin deposits. One part of the deposit is situated in Saxony, Germany (Zinnwald), the other in Bohemia, Czech Republic (Cinovec). The Zinnwaldite was discredited as a mineral species (Rieder et al., 1998 - Nomenclature of the Micas), and is reconsidered as a trioctahedral micas on (or close to) the Siderophyllite-Polylithionite join (dark micas containing lithium). In this specimen, the ‘Zinnwaldite’ crystals are silver-grey platy.
Website: http://geology.uaic.ro/muzee/mineralogie/
Concept & 3D-modelling by Andrei Ionut APOPEI
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