APUANITE

    Class : Oxides and hydroxides
    Subclass : Oxides
    Crystal System : Tetragonal
    Chemistry : Fe5Sb4O12S
    Rarity : Very rare

Apuanite is a very rare complex oxide of iron and antimony. It owes its name to its locality of discovery : where it is only known in the baryte veinlets which crosscut the metasomatic iron deposit of Buca Della Vena (Tuscany, Italy). It then forms rare small prismatic or thick tabular crystals and massive aggregates, black in color.


Main photo : Apuanite from Buca Della Vena, Tuscany, Italy - © Enrico Bonacina

Apuanite in the World


Apuanite is found only in Buca Della Vena (Italy) in small millimetric crystals.
 
Right photo : Apuanite from Buca Della Vena, Tuscany, Italy - © Stefano Magnanelli

Apuanite in France

Apuanite is not reported in the French underground.

Twinning

No known twins for this mineral species.

Fakes and treatments

No fake identified for this mineral species.


Hardness : 4-5
Density : 5.33
Fracture : Irregular
Trace : Black


TP : Opaque
RI : None
Birefringence : None
Optical character : None
Pleochroism : None
Fluorescence : None

Solubility : -

Magnetism : None
Radioactivity : None

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