| The Yaogangxian mine is a world-class locality for not only fluorite but also for arsenopyrite, bournonite, stannite, wurtzite, and ferberite. |
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| Pseudomorphs of marcasite, chalcopyrite, pyrite, arsenopyrite, pyrargyrite, magnetite, and quartz after pyrrhotite have been reported. |
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| One quick stop was made at the abandoned New First of May mine, where on the ore pile we found galena, pyrite, arsenopyrite, and fluorite. |
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| There were shops full of green and purple fluorite, ferberite and arsenopyrite, and spessartine and stibnite. |
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| Iron and copper sulfides of this region are predominately pyrite, pyrrhotite, chalcopyrite, arsenopyrite, bornite, and marcasite. |
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| It is an alteration product of realgar, native arsenic, and, less commonly, arsenopyrite. |
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| Minerals such as wolframite, arsenopyrite, fluorite, and quartz are well known from this mine. |
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| The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet, and pyrite. |
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| The quartz veins hosting this mineralization are commonly banded with scorodite and arsenopyrite and range in width from 10 to 30 centimeters. |
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| Mineralization is associated with siderite-albite veins and breccias with chalcopyrite, arsenopyrite, pyrite, and their oxidized equivalents. |
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| Most environmental arsenic occurs naturally, appearing in deposits of minerals and ores including arsenopyrite, enargite, and proustite. |
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| The sulphide minerals consist of varying proportions of pyrite, pyrrhotite and sphalerite with lesser galena, arsenopyrite and chalcopyrite. |
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| Within the intrusion, the mineralized zone is variably silicic, chloritic, and contains variable concentrations of pyrite, arsenopyrite and gold. |
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| Some of the common minerals in soils are arsenopyrite, mispickel, orpiment and realgar. |
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| They can be weakly mineralized in places with arsenopyrite, pyrite and rare jamesonite and boulangerite in a quartz gangue. |
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| The mineralisation consists of chalcopyrite, cassiterite, sphalerite, pyrite, and arsenopyrite, and is essentially stratiform, dipping to the northwest at about 30 degrees. |
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| Within the deeper diorite unit, some intense sericite alteration was observed with arsenopyrite, pyrite and pyrrhotite, generally as selvedges to quartz veins. |
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| The deposit hosts gold, pyrite, pyrrhotite, arsenopyrite, antimonite. |
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| Disseminated native gold, tetrahedrite, telluride minerals, pyrite, arsenopyrite, and chalcopyrite are the primary metallic minerals in the veins. |
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| The mineralization is comprised of pyrite, sphalerite, silver rich galena, chalcopyrite, arsenopyrite, tennandite, tetrahedrite, native gold, native silver and quartz. |
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