General Information:
Chemical Formula:
(Fe++,Fe+++,Ti++++)3O2(As+++2O5)
Environment:
Alpine mineral fissures.
IMA Status:
Approved IMA
Locality:
On the eastern slopes of Pizzo Cervandome, Italy. Near Gorb, Binntal, Switzerland.
Name Origin:
For the Fe, Ti, and As in its chemical composition.
Physical Properties:
Cleavage:
[100] Perfect
Color:
brown or black.
Density:
4.6
Diaphaniety:
Opaque
Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., Tabular - Form dimensions are thin in one direction., Globular - Spherical, or nearly so, rounded forms (e.g. wavellit e).
Hardness:
5 - Apatite
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Streak:
ochre brown
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