Mineral: | Topacio
| Fórmula química: | Al2SiO4(F,OH)2 | Tamaño: | 59,1 x 50,3 x 42,2
cristal: 35,1 x 17,3 mm | Peso: | | Transparencia: | | Número de piezas: | | Origen: | Ghundao Hill, Katlang, Distrito de Mardan, Provincia de la Frontera Noroeste, Pakistán | Pretty long Katlang-Topaz in matrix. The crystal seems to be a post-genetic damaged by tectonic forces. Nevertheless the upper part shows an undamaged termination and prism faces. The lower part shows multiple fracture planes. Also some smaller crystals are also hosted in the matrix.
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