mispickel

mispickel

[mis-pik-uhl]
noun Mineralogy.

Origin:
1675–85; < German Mispickel

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mispickel (ˈmɪsˌpɪkəl)
 
n
another name for arsenopyrite
 
[C17: from German]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
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mispickel

an iron sulfoarsenide mineral (FeAsS), the most common ore of arsenic. It is most commonly found in ore veins that were formed at high temperatures, as at Mapimi, Mex.; Butte, Mont.; and Tunaberg, Swed. Arsenopyrite forms monoclinic or triclinic crystals with an orthorhombic shape; the physical appearance of these crystals is seldom an accurate method for determining their symmetry. A series of minerals in which cobalt partially replaces iron is called cobaltian arsenopyrites; those in which the Co:Fe ratio lies between 1:2 and 6:1 are called glaucodot (see also cobaltite). Weathering alters these sulfides to arsenates: arsenopyrite to scorodite, and glaucodot to erythrite. For detailed physical properties, see sulfide mineral (table)

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