Formula :
Na4Sn4+Be22+[Si6O18] * 2 H2O
System: monoclinic Hardness:5½ Rarity:very rare
Strunz id:VIII/F.20-05 -
SILICATES
Name origin: Named after Henning Sørensen (b. 1926), mineralogist and petrographer, Professor of Geology, University of Copenhagen (Denmark).
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