Turtmannite

Specimen ID: HTW-GFP

Mineral(s)
Turtmannite : (Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+x
Locality
Mindat locality:
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Photo added to mindat.org

dimension area mm. 2 x 2 photo and collection Luigi Chiappino
Luigi Chiappino - 29th September 2009
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