Todorokite Opal Image
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Opal
,
Todorokite
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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