Schafarzikite

Formula: FeSb2O4

Origin of name: for F. Schafarzik, Hungarian mineralogist

 

Crystal system: tetragonal

Crystal class: 4/m 2/m 2/m

Twinning:

Unit cell: a = 8.59, c = 5.92

 

Colour: Red to reddish brown, thin splinters yellow

Diaphaneity: Opaque, translucent in thin fragments

Luster: Metallic

Habit: Crystals prismatic, striated

Hardness: 3.5

Specific gravity: 4.3

Cleavage: 3; {110} perfect, {200} good, {001} trace

Tenacity: 

Streak: Yellowish brown

 

Synonyms/varieties:

 

Comments: 

 

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