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Purple aragonite and sputnik aragonite also have a pseudo-hexagonal habit and get their hexagonal crystal shape from cyclic twinned growth—studied closely you can see similarities with the crystal growth of dolomite snowflakes
UV reactivity will glow orange under 365nm UV light
and nicer pieces are even framed for display
Microcline is a type of feldspar that forms opaque blocky geometric crystals
They are pretty friendly and unafraid of handling
Dolomite snowflake (dolomite ps. after aragonite), twinned Coprolite Purple aragonite and sputnik aragoniteLocale: Roswell, New Mexico Approx dimensions: 2. 5 x 2. 25 x 1. 5" Approx weight: 203g These unusual pseudomorphs of dolomite after aragonite have earned the name snowflake because of their hexagonal shape which is often striated to give the mineral an appearance like a chunky snowflake. Pseudomorph means the mineral initially grew as aragonite, and then through geological processes the aragonite was replaced with dolomite. The new mineral will
