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Mineralpedia Details for Roggianite

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Roggianite

Roggianite

Formula
Ca2BeAl2Si4O13(OH)2┬ĚnH2O (n < 2.5) 
Crystal System
Tetragonal 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, yellowish white, white 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Hardness
WebMineral
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Mindat
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Roggianite from Alpe Rosso, Orcesco, Druogno, Piedmont, Italy

Roggianite
            from Alpe Rosso, Orcesco, Druogno, Piedmont, Italy

White Albite matrix with one side with fibrous snowy white Roggianite, a very rare beryllium tektosilicate found in just a handful of localities. It is a zeolite, and this is the type locality.

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