Sulphides: Cobaltine

Diagnostic card.
Crystals of cobaltite on chalcopyrite, Tunaberg, Sweden

Co As S
Cubic amount of cubic zirconia
Hardness
Specific weight 6,3
Cleavage is perfect
Crack irregular
Color silvery white, gray-black
Color in powder grayish black
Glitter metal

Cobaltine (cobalt shine), - cobalt sulfide and arsenic. Glitter is metallic. Opaque. Colors: silver-white, pinkish. The line is gray to black. The fracture is conchoidal, uneven. It's fragile. Cleavage is perfect. It is formed mainly in skarns, less often in hydrothermal veins.

Crystals (cubic syngony) often in the form of pentagonal dodecahedrons, also dense solid aggregates or disseminated ores. Deposits: in the Ore Mountains (Germany), in Germany, England, Norway, the CIS (Transcaucasia), Canada, Morocco.

It crystallizes in the form of individuals, which are usually cubes, octahedra and pitoithedra, sometimes a combination of the two latter forms. The facets of crystals are usually shaded, similar to pyrite.

Cobaltin still occurs more often in the form of massive accumulations, dense or granular addition. Has perfect cleavage, fragility. The color of the mineral varies from silvery white with violet gleams to black and gray. Opaque, has a metallic sheen of varying intensity. There are species heavier and harder.

Diagnostic signs.
It dissolves in nitric acid; Fairly easily melts, forming a weakly magnetic ball.

Origin.
Cobaltin is a typical mineral of hydrothermal genesis. It occurs mainly in veins and veins among granites and pegmatites.

Deposits and applications.
In the United States, this mineral is found in Colorado, Idaho and California. The most significant deposits in Canada (Cobalt in Ontario) and Mexico (the Sonora deposit). Fine crystals come from Sweden, Great Britain, Norway, Germany, Russia, Morocco, India and Australia. Cobaltin is present in nature in large quantities and is of great economic importance as cobalt ore. This element is used in many industries for steel production.

ADR 4.1
Highly flammable solids , self-reactive substances and solid desensitized explosives
Risk of fire. Flammable or combustible substances can ignite from sparks or flames. May contain self-reactive substances capable of exothermic decomposition in the case of heating, contact with other substances (such as: acids, heavy metal compounds or amines), friction or impact.
This can lead to the emission of harmful or flammable gases or vapor or spontaneous combustion. Containers can explode when heated (over-dangerous - practically do not burn).
Risk of explosion of desensitized explosives after loss of desensitizer
Seven vertical red stripes on a white background, equal in number, ADR number, black flame

ADR 6.1
Toxic substances (poison)
Risk of poisoning by inhalation, in contact with skin or if swallowed. Dangerous to aquatic environment or sewer system
Use a mask for emergency leaving the vehicle
White diamond, ADR number, black skull and crossbones

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Poisonous and radioactive dangerous stones and minerals

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Catalog of minerals and semi-precious stones of the world by groups

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