Hydroboracite in intersecting sparys up to 2,5 cm.
Formula : CaMg[B3O4(OH)3]2 * 3 H2O
System: monoclinic Hardness:2-3 Rarity:not common
Strunz id:V/J.3-20 -
NITRATES, CARBONATES and BORATES
Name origin: In allusion to the composition, being a HYDRated BORAte.
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Specimen weight:24 gr.
Crystal size:2,5 cm long
Overall size: 40mm x 32 mm x 28 mm
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