Hydrozincite
2+1⁄2Luster Silky, pearly, dull, earthy Streak White Diaphaneity Transparent, translucent Specific gravity 3.5–4 Optical properties Biaxial (−) Refractive index nα = 1.630 nβ = 1.642 nγ = 1.750 Birefringence δ = 0.120 2V angle Measured: 40°, calculated: 40° Dispersion relatively strong Ultraviolet fluorescence Fluoresces pale blue to lilac under UV Solubility Readily soluble in acids. References [2][3][4]
Hydrozincite, also known as zinc bloom or marionite, is a white carbonate mineral consisting of Zn5(CO3)2(OH)6. It is usually found in massive rather than crystalline form.
It occurs as an oxidation product of zinc ores and as post mine incrustations. It occurs associated with smithsonite, hemimorphite, willemite, cerussite, aurichalcite, calcite and limonite.[2]
It was first described in 1853 for an occurrence in Bad Bleiberg, Carinthia, Austria and named for its chemical content.[3]
References
- Mineral galleries data
External links
- Media related to Hydrozincite at Wikimedia Commons
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