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Berborite-2T

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System:
Trigonal
Colour:
colorless
A polytype of Berborite

Classification of Berborite-2T

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Physical Properties of Berborite-2T

Diaphaneity (Transparency):
Transparent
Colour:
colorless
Comment:
Pedial faces usual shiny and smooth while other faces may be dull and frosty
Cleavage:
Perfect
{001}
Density:
2.06 g/cm3 (Measured)    

Crystallography of Berborite-2T

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3c1
Cell Parameters:
a = 4.431Å, c = 10.663Å
Ratio:
a:c = 1 : 2.406
Unit Cell Volume:
V 181.31 ų (Calculated from Unit Cell)

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Berborite-2T

Reference List:
Giuseppetti et al. (1990): Berborite polytypes. Neues Jahrbuch für Mineralogie-Abhandlungen 162 (1): 101-116

Internet Links for Berborite-2T

Mineral and/or Locality  
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