Muscovite : KAl2(AlSi3O10)(OH)2
Microcline : K(AlSi3O8)
Mindat locality:
12cm x 8cm x 6cm
Collected by:
Photo added to mindat.org
“Rough, but big and thick crystal book of mica from the large upper trench visible in 2018.”
Kevin Czaja - 13th September 2018
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