BERTRANDITE FINE CRYSTALS ON QUARTZ RARE Sauberg, GERMANY
Item History & Price
| Reference Number: Avaluer:4896728 |
BERTRANDITE * fine crystals (size 2mm) of bertrandite sitting on crystal of quartz ** nice and rare specimen from uncommon classic locality *
size: 12 X 2 X 2mm
3B5
origin: Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany
Bertrandite is a beryllium sorosilicate hydroxide mineral with composition: Be4Si2O7(OH)2. Bertrandite is a colorless to pale yellow orthorhombic mineral with a hardness of 6-7.It is commonly found in beryllium rich pegma...tites and is in part an alteration of beryl. Bertrandite often occurs as a pseudomorphic replacement of beryl. Associated minerals include beryl, phenakite, herderite, tourmaline, muscovite, fluorite and quartz.
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00052
