Chalcodite : K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Albite : Na(AlSi3O8)
As recorded:
Broughton talc mine, Saint-Pierre-de-Broughton, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada
Collected by:
Photo added to mindat.org
“A rosette of brown chalcodite-stilpnomelane crystals, 1.5 mm across, associated with albite.”
R. Peter Richards - 1st January 2009
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