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Sharp, lustrous, transparent gem crystal of vanadium and chromium-rich tremolite from Merelani. The tremolite crystal ranges from almost colorless at the base to a vibrant light green apple color at the top. The crystal is doubly-terminated, with some small calcite crystals on one termination. This is a top-quality crystal from the 2006 find. 3.4 x 1.7 x 0.5 cm.
For more information on this locality, please see the superb article by John Jaszczak and Daniel Trinchillo in Rocks and Minerals, Vol. 88, Issue 2 (the abstract can be found here).
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