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Realgar contains arsenic
It can cause the hydroxyapophyllite crystals growing over it to glow a faint red—try it in a dark room
you can see they are hollow inside
It is common for small pieces to crumble off the surface during handling
Details of the wood surface pattern and knots can be made out on the sides
Dolomite snowflake (dolomite ps. after aragonite) Magnetite Realgar contains arsenicLocale: Roswell, New Mexico Approx dimensions: 1. 5 x 1. 25" Approx weight: 85g 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 retain the
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