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Mineralpedia Details for Aminoffite

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Aminoffite

Aminoffite

Formula
Ca3(BeOH)2Si3O10 
Crystal System
Tetragonal 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, light yellow 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
5.5 
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Aminoffite from Långban, Filipstad, Värmland, Sweden

Aminoffite
            from Långban, Filipstad, Värmland, Sweden
Special Info
Type Locality

An exceptionally rich specimen with no less than 18 waterclear to murky tetragonal dipyramidal crystals from 0.25 to .75mm. At least four crystals are to 0.75mm. Some crystals are full and complete others are partial and half hidden by matrix.  A very rare beryllium silcate found at Langban and in Russia.

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