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Bi-Color Tourmaline Twin Crystal

Product No.: a01-061

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Bi-Color Tourmaline Twin Crystal

Mineral:	Tourmaline, Variety: Schorl / Feldspar, Plagioclase, Variety: Albite
Chemical Formula:	NaFe³⁺₂Al₆(BO₃)₃[Si₆O₁₈](OH)₃(OH) / NaAlSi₃O₈
Size:	38,4 x 16,8 x 14,3 mm
Weight:	26,28 ct or 5,256 g
Transparence:	transparent - opaque
Quantity:	1
Origin:	Chamachhu, Haramosh Mts., Skardu District, Baltistan, Northern Areas, Pakistan

The tourmaline has a black base followed by a yellowish part and finally ends with a green termination. At one prism side is also albite attached. Fine damaged specimen from Pakistan!

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