Mineral: | Tourmaline, Variety: Elbaite (Rubellite) / Stibiotantalite / Quartz / Feldspar, Variety: Microcline / Muscovite
| Chemical Formula: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) / Sb(Ta,Nb)O4 / SiO2 / NaAlSi3O8 / KAlSi3O8 | Size: | | Weight: | | Transparence: | transparent - translucent | Quantity: | | Origin: | Mine close to Letpanhla village near Mount Pyin Kyi Thaung, Singu Township, Mandalay Division, Burma (Myanmar) | Here you get a rare paragenesis for this locality stibiotantalite on rubellite Cluster. The rubellite is also associated with quartz and muscovite on feldspar. Except a very few crystal at the outer rim of the specimen all crystals and terminations are intact. The stibiotantalite shows orthorhombic shape and at least 4 crystals with termination and no damages. The biggest stibiotantalite crystal shows at one side some damage but still disclosing the typical crystal shape. A rare and interesting specimen from the Letpanhla mine
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