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Double cleophane crystal, September 9 mine, Madan, Bulgaria year 90.
The chemical basis of sphalerite and cleophane (which is actually just a variety of sphalerite) remains zinc sulfide, although cleophane contains significant amounts of manganese.
They also share the same cubic structure.
Stone dimensions: L:56mm x W:32mm x H:36mm.
Weight: 154g (with base).
