Wurtzite / Sphalerite

Wurtzite / Sphalerite

€72,00
SKU: A666
Mererani, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania
This wurtzite / sphalerite shows some very good faces with some excellent luster, which is rare for this mineral.
2.2 x 2.0 x 1.7 cm
9.5 g
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The rare wurtzite (beta-ZnS) is found in Tanzania as a brown to strong red crystal and crystallizes in the hexagonal crystal system. Zinc blende (alpha-ZnS) or sphalerite, on the other hand, crystallizes cubically. In fact, the two minerals are hardly clearly distinguishable visually and require more complex analysis methods. In Tanzania, both are called sphalerite.