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MINERAL IDENTIFICATION PROJECT


Search found 1 mineral.


Mineral
Hard- ness
Cleavage
Fracture
Trans- parency
10% HCl Reaction
SG
Luster
Color
Streak
Xtal Form
Mineral Class
Comments
ferberite-heubnerite
5.0
basal
Uneven
Translucent
none
7.10
submetallic
black
brown
tabular
tungstates
Semi-metallic to metallic lusterDark brown to black with reddish brown streak. Solid solution series between ferberite and heubnerite.

 
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