Sulfide minerals include massive to disseminated pyrite and pyrrhotite with lesser amounts of chalcopyrite, galena, sphalerite and arsenopyrite.
22.
The most common refractory ores are pyrite and arsenopyrite, which are sulfide ores that trap the gold within them.
23.
They consist of metallic-appearing sulfides such as sphalerite, arsenopyrite, and marcasite embedded in opaque veins of quartz.
24.
Many arsenopyrite gold ores are refractory, i . e . the gold is not easily liberated from the mineral matrix.
25.
Accessory minerals observed in the ore body include nickeline, nickeliferous chalcopyrite, cuprous pentlandite, arsenian pentlandite, violarite and arsenopyrite.
26.
Some arsenic exists in elemental form, but most arsenic is found in the arsenic minerals orpiment, realgar, arsenopyrite, and enargite.
27.
For homeopathic use, arsenicum album is prepared by separating arsenic from iron ( as in arsenopyrite ), cobalt, or nickel by baking at high temperatures.
28.
The Kittatinny Limestone in New Jersey locally contains hydrocarbons and numerous accessory minerals including fluorite, sphalerite, arsenopyrite, galena, quartz, albite, and others.
29.
The veins are characterized by quartz, sulphide ( auriferous arsenopyrite ) and native gold ( visible gold flakes have historically been observed in several slate belts ).
30.
"' Arseniosiderite "'is a rare arsenate mineral formed by the oxidation of other arsenic-containing minerals, such as scorodite or arsenopyrite.
