Grattarolaite

Grattarolaite, intimately intergrown with rodolicoite
Origin: Castelnuovo Mine, Santa Barbara lignite district, San Giovanni Valdarno, Valdarno (Val d'Arno), Arezzo Province, Tuscany, Italy
Picture size: 4 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

Brown irregularly shaped crystalites always intimately intergrown with rodolicoite pseudo after vivianite
Origin: Santa Barbara Mine, Castelnuovo dei Sabbioni, Arezzo, Italy
Sample size: 1 x 2 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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