Nice Bournonite xls in twin formation 2,4 cm wide.
Formula : Mg[AsO3(OH)] * 4 H2O
System: orthorhombic Hardness:2.28 Rarity:rare
Strunz id:VII/C.15-10 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Honoring R`ejane Brasse, who first synthesized the compound.
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Specimen weight:12 gr.
Crystal size:2,4 cm wide
Overall size: 24mm x 22 mm x 10 mm
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