Hechtsbergite

General Information:
 Chemical Formula:
Bi2O(OH)(VO4)
 Composition:
(Molecular Weight = 565.91 gm)
Vanadium 9.00 % V 
Bismuth 73.86 % Bi
Hydrogen 0.18 % H 
Oxygen 16.96 % O 
 Empirical Formula:
Bi2O(OH)(VO4)
 Environment:
In minute cavities in gniess quarried for road-building material. The vanadium-dominant analog of atelestite and, probably, smrkovecite.
 IMA Status:
Approved IMA (Dana # Added)
 Locality:
Hechtsberg quarry at Hausach, Black Forest, Germany.
 Name Origin:
Named after the locality.
Physical Properties:
 Cleavage:
None
 Color:
brown.
 Density:
6.87
 Diaphaniety:
Transparent to translucent
 Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,
 Hardness:
4.5 - Between Fluorite and Apatite
 Luminescence:
Non-fluorescent.
 Luster:
Adamantine
 Streak:
yellow
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