Todorokite Opal Image

Hudson Institute of Mineralogy

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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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