mispickel

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Related to arsenopyrite: pyrrhotite, molybdenite

mispickel

arsenical pyrites, an iron-rich ore containing a high content of arsenic. Fumes from an industrial plant handling the ore can cause local chronic arsenic poisoning in livestock.
References in periodicals archive ?
Based on imaging, EDS, and electron diffraction data collected from the two samples, it was concluded that arsenopyrite oxidation leads to the precipitation of the amorphous Fe-As-O coating.
arsenopyrite grades between 98% and 62% for arsenopyrite recoveries of 45% to 73%, respectively.
0x20 The gold mineralization occurs as quartz-arsenopyrite-pyrite-chalcopyrite veins in quartz monzonite and hornfels and as silicification with disseminated arsenopyrite in quartz monzonite.
The area underwent minor exploration for SEDEX style silver-lead-zinc mineralization in the early 1980's, and previous operators discovered zones of disseminated to fracture controlled arsenopyrite - sphalerite - galena mineralization within chert, anomalous silver, lead, and zinc in soil samples, and a zone of massive barite up to 20m thick traceable over 5.
Past work by previous operators has identified several mineralized zones of copper and cobalt, and numerous other exploration targets on the property that have not as yet been evaluated, including the arsenopyrite gold zone mentioned above.
52 meters, -- A section of altered, sericitized and silicified sheared mudstone with traces of pyrite and arsenopyrite assayed 16.
The silicified structures are mineralized by arsenopyrite and flanked by broad zones of lower grade gold mineralization averaging +0.
3 ft) of disseminated and to a large degree semi-massive sulphides composed of varying concentrations of pyrrhotite, arsenopyrite and minor pyrite.
Galena, arsenopyrite, and wolframite are commonly associated with the quartz veins.
Subsequent holes will test the Albitite and Arsenopyrite Zones further down plunge to the west.
Typical gold-bearing rhyolite is mylonitized, silicified and contains disseminated to stringers of arsenopyrite and pyrite.
The gold is refractory, as it is closely associated with and included or encapsulated inside the arsenopyrite.