Natural mineral galena specimens teaching materials experimental rock samples galena original stone

Neutral bleached carton well packed.

 Natural mineral galena specimens teaching materials experimental rock samples galena original stone

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 ♣  Introduction:

  Galena (lead sulfide i.e.,) is a relatively common mineral, which is a sulfide, wherein the ratio of the metal (lead) and the sulfur is 1: 1. It belongs to equiaxed crystal chemical formula PbS, which may also contain to 1% of the silver. Lead is one of the earlier metal lead-zinc ore extracted from human beings out of. It is the softest metals, but also more than one of the major metal, with blue-gray, hardness 1.5, the proportion of 11.34, melting point 327.4 ℃, boiling point 1750 ℃, malleable good, easily with other metals (such as zinc, tin, antimony, arsenic etc.) made of an alloy. Galena often showed perfect crystal cube, but sometimes there are flat-topped pyramid-shaped or bone-like crystals. It has a lead-gray color, hardness of 2.5, a high density of 7.4 to 7.6 g / cc, a metallic luster. 

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Sedimentary rocks collection

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Silicates ,Oxides,Hydroxides,Sulfurs,......

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