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Zinc type

2020-12-24 09:23:34

Natural resources in the wider distribution of metal elements. Mostly exist in the sulfide state, the main zinc minerals are sphalerite, there are also a small amount of oxide ore such as calamine, willemite, hemimorphite, zinc and other water. 2.1 Sphalerite

Crystal is an equiaxed crystal sulfide minerals, the same composition belongs to the hexagonal system is called wurtzite. Sphalerite zinc 67.1%; usually iron, iron content greater than 10% is called the marmatite. Pure sphalerite is near colorless, but usually pale yellow, yellow brown, brown or even black due to the presence of iron, darker with increasing iron content; transparency correspondingly from transparent to translucent to opaque; Gloss, resin gloss to semi-metallic luster. Mohs hardness of 3.5 ~ 4.0, the proportion of 3.9 ~ 4.2g / cm3, with the iron content increases, the hardness increases and the proportion decreased.