bornite
bornite (peacock ore) Common and important copper ore mineral, Cu5FeS4; sp. gr. 5.0–5.1; hardness 3; cubic; reddish-brown to various shades of purplish-blue, the colours iridescent on tarnished surfaces; pale grey streak; metallic lustre; crystals rough cubes, rhombododecahedra, can also be massive; cleavage poor {111}; occurs in hydrothermal veins, in zones of secondary enrichment, and in various syngenetic copper ores, porphyry copper deposits, skarns, etc.; soluble in nitric acid.
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Azurite , azurite Secondary mineral, Cu3(CO3)2(OH)2; sp. gr. 3.7–3.9; hardness 3.5–4.0; monoclinic; various shades of deep azure blue; light-blue streak; vitre… Chalcopyrite , chalcopyrite
chalcopyrite (copper pyrites) Most common copper mineral, CuFeS2; sp. gr. 4.1–4.3; hardness 3.5–4.0; tetragonal; brass-yellow, often wit… Sphalerite , sphalerite (black jack, zinc blende) Mineral, ZnS; sp. gr. 3.9–4.1; hardness 3.5–4.0; cubic; colour variable, but commonly yellow, brown, or black, a… Hydrogen Chloride , Hydrogen chloride is a chemical compound composed of the elements hydrogen and chlorine . It readily dissolves in water to produce a solution called… Edta , EDTA Ethylene diamine tetra‐acetic acid, a compound that forms stable chemical complexes with metal ions (i.e. a chelating agent). Also called versen… Cerussite , cerussite Mineral, PbCO3; sp. gr. 6.4–6.6; hardness 3.0–3.5; orthorhombic; usually white or grey; white streak; adamantine lustre; crystals often pri…
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bornite