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Heulandite, Augite

Strain Lake, HWY 41, nr. Khartoum, Griffith TWP.
Renfrew Co.
Ontario
Canada
Size: 7.0x5.4x3.4
Largest crystal size: Au 19mm, He 3mm
This specimen is not available for sale.

Very interesting! A very good specimen of sharp heulandite crystals speckled on pyroxene group, probably augite crystals. The theory is that low temperature hydrothermal solutions breaking down the augite and other silicates in the deposit, eventually crystallized as silicates on the augite, in this case, heulandite. Nice and interesting specimen!

All prices in Canadian dollars. For payment in US$, deduct 22% or multiply by 0.78.

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