Re os dating arsenopyrite

Arsenopyrite also can be associated with significant amounts of gold.Consequently, it serves as an indicator of gold bearing reefs. the gold is not easily cyanide leached from the mineral matrix.The processing of such minerals has led to numerous cases of poisonings.Arsenic trioxide is an amphoteric oxide, and its aqueous solutions are weakly acidic.Being the main compound of arsenic, the trioxide is the precursor to elemental arsenic, arsenic alloys, and arsenide semiconductors. feed additives (Roxarsone) and pharmaceuticals (Neosalvarsan), are derived from arsenic trioxide.Bulk arsenic-based compounds sodium arsenite and sodium cacodylate are derived from the trioxide.Arsenopyrite is found in high temperature hydrothermal veins, in pegmatites, and in areas of contact metamorphism or metasomatism.Arsenopyrite crystallizes in the monoclinic crystal system and often shows prismatic crystal or columnar forms with striations and twinning common.

Arsenopyrite in older literature may be referred to as mispickel, a name of German origin.Thus, it dissolves readily in alkaline solutions to give arsenites.It is less soluble in acids, although it will dissolve in hydrochloric acid.We used Re-Os arsenopyrite geochronology to precisely determine the age of main-stage gold mineralization at Muruntau to be 287.5 ± 1.7 Ma, which overlaps the emplacement of proximal post-tectonic granitoid magmatism.Additionally, we suggest that arsenopyrite growth may have occurred over an interval of at least 2 m.y.The Mount Pleasant granite-related polymetallic deposit, located on the southwestern margin of the Late Devonian Mount Pleasant Caldera Complex in southwestern New Brunswick, contains a significant resource of tin, tungsten, molybdenum, zinc, indium, and bismuth.


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