description: LOCALITY: Adelaide Mine, near Zeehan, Tasmania, Australia 2 1/2" tall The Adelaide Mine is commonly considered to be the "Rolls Royce" of the Tasmanian crocoite mines. This Adelaide Mine crocoite specimen consist of a high quality group of lustrous, terminated, hollow crystals. Such hollow crystals are referred to as "hopper crystals." They form when the rate of crystal lattice growth on the exterior of the crystal exceeds the growth rate on the interior.
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