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Howlite on Anhydrite - Bras d'Or Lake - Iona - Cape Breton Nova Scotia - Canada
(#:MINS8387)
Cluster of Howlite crystals up to 8 mm long on massive Anhydrite matrix.
Formula :
Ca
2
[SiB
5
O
9
(OH)
5
]
System:
monoclinic
Hardness:
3-3½
Rarity:
rare
Strunz id:VIII/F.28-10 - SILICATES
Name origin:
After Henry How (1828 - 1879) Canadian chemist, geologist, and mineralogist, of Nova Scotia, who first described the species.
Specimen weight:22 gr.
Crystal size:Up to 8 mm long
Overall size: 48mm x 32 mm x 19 mm
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