Cetineite Crystals
Collection and photograph: Christian Rewitzer

 Cetineite

A hexagonal-pyramidal mineral containing antimony, hydrogen, oxygen, potassium, sodium, and sulfur.

Formula: (K,Na)6Sb3+12(Sb3+S3)2O18(OH)0.5 · 5,5H2O
Colour: Orange-red
Lustre: Resinous
Hardness:
Specific Gravity: 4.21 (Calculated)
Crystal System: Hexagonal 
 
Cetineite was named after the Cetine mine in Italy, where it was first discovered. 
Locality: Le Cetine di Cotorniano Mine (Le Cetine Mine; Cetine Mine; Rosia), Chiusdino, Siena Province, Tuscany, Italy
 
 
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