Todorokite Opal Image

Todorokite Opal Image
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 Opal, Todorokite

Large Opal Image

Mineral: Opal: SiO2·n(H2O)  
Todorokite: (Na,Ca,K)2(Mn++++,Mn+++)6O12·3-4.5(H2O)
Comments: Dendritic todorokite in white opal.
Location: Brosso Mine, Ivrea, Torino, Piemonte, Italy.
Scale: See Photo.
Copyright: © Jeff Weissman / Photographic Guide to Mineral Species
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