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    In olden days, what was "mispickel" used for?

    Question #83749. Asked by zbeckabee. (Jul 24 07 2:01 PM)


    nina300

    		Mispickel, now arsenopyrite, is used for arsenic ore or white arsenic which is highly toxic and is used for dyes, leather treatments, and pest control.

    http://www.reciprocalnet.org/recipnet/showsample.jsp?sampleId=27343965&sampleHistoryId=3874

    Jul 24 07, 2:28 PM
    kaung30

    		It is used in dyes, paints and making jewelry.
    http://ceramic-materials.com/cermat/material/69.html

    Jul 24 07, 7:01 PM
    lilbuggie07

    		Arsenopyrite
    Arsenopyrite is an iron arsenic sulfide (FeAsS). It is a hard (Mohs 5.5-6) metallic, opaque, steel grey to silver white mineral with a relatively high specific gravity of 6.1. When dissolved in nitric acid, it releases elemental sulfur. When arsenopyrite is heated, it becomes magnetic and gives off toxic fumes. With 46% arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic. When deposits of arsenopyrite become exposed to the atmosphere, usually due to mining, the mineral will slowly oxidize, converting the arsenic into oxides that are more soluble in water, leading to Acid mine drainage.

    The crystal habit, hardness, density, and garlic odor when struck are diagnostic. Arsenopyrite in older literature may be referred to as mispickel, a name of German origin.

    Arsenopyrite also can be associated with significant amounts of gold. Consequently it serves as an indicator of gold bearing reefs. Many arsenopyrite gold ores are refractory, i.e. the gold is not easily liberated from the mineral matrix.

    Arsenopyrite is found in high temperature hydrothermal veins, in pegmatites, and in areas of contact metamorphism or metasomatism.

    http://en.wikipedia.org/wiki/Mispickel

    Jul 25 07, 7:50 AM

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