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Cordierite, Osumilite, Quartz


Cordierite : (Mg,Fe)2Al4Si5O18, Osumilite : (K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30, Quartz : SiO2

Photo Copyright © Germano Fretti  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Funtanafigu Quarry, Marrubiu, Mt. Arci, Oristano Province, Sardinia, Italy
Pink Cordierite and blue Osumilite crystals on Quartz matrix.

Field of view mm 10x6

Photo Germano Fretti, collection Fabio Brignoli. (roccelllans)

This photo has been shown 192 times



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