Mineral: | Tourmaline, Variety: Vanadium Uvite (Verdelite)
| Chemical Formula: | (Ca,Na)(Mg,Fe2+)3(Al, V)5Mg(BO3)3Si6O18(OH,F)4 | Size: | | Weight: | | Transparence: | transparent in transmitted light | Quantity: | | Origin: | Mong Hsu, Shan State, Burma (Myanmar) | Well here you get a special Uvite from the Mong Hsu mine where these specimens are found in the same marble where also rubies are found! The piece discloses a very strong red color under the Chelsea filter, which must be caused by the high content on vanadium and chrome respectively.
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