Biotite (Var: Rubellan)

Specimen ID: LA5-4T9

Mineral(s)
Biotite (Var: Rubellan) : K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Locality
Mindat locality:
Events

Photo added to mindat.org

1.5 cm "crystal" of rubellan in matrix, labeled as being 'hydrobiotite var. rubellan'. S244-17 Excalibur Mineral specimen.
Jeff Weissman - 3rd January 2008
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