Cuprite is a mineral composed of copper(I) oxide Cu2O, and is a minor ore of copper. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Copper(I oxide or cuprous oxide (Cu2O is an Oxide of Copper. It is Insoluble in water and organic Solvents. An ore is a volume of rock containing components or Minerals in a mode of occurrence that renders it valuable for mining
Its dark crystals with red internal reflections are in the isometric system hexoctahedral class, appearing as cubic, octahedral, or dodecahedral forms, or in combinations. The cubic crystal system (or isometric) is a Crystal system where the Unit cell is in the shape of a Cube. Penetration twins frequently occur. Crystal twinning occurs when two separate crystals share some of the same Crystal lattice points in a symmetrical manner In spite of its nice color it is rarely used for jewelry because of its low Mohs hardness of 3. Jewellery (also spelled jewelry, see spelling differences) is a personal Ornament, such as a necklace ring or bracelet made from Gemstones The Mohs scale of mineral hardness characterizes the scratch resistance of various Minerals through the ability of a harder material to scratch a softer material 5 to 4. It has a relatively high specific gravity of 6. Specific gravity is defined as the ratio of the Density of a given solid or liquid substance to the density of water at a specific temperature and pressure typically 1, imperfect cleavage and a brittle to conchoidal fracture. The luster is sub-metallic to brilliant adamantine. The "chalcotrichite" variety typically shows greatly elongated (parallel to [001]) capillary or needle like crystals forms.
It is a secondary mineral which forms in the oxidized zone of copper sulfide deposits. It frequently occurs in association with native copper, azurite, chrysocolla, malachite, tenorite and a variety of iron oxide minerals. Copper, as native copper, is one of the few Metallic elements to occur in uncombined form as a natural Mineral, although most commonly occurs in Azutite may also refer to a blue Green fluorescent protein derivative. Chrysocolla (hydrated Copper silicate) is a Mineral, ( Cu, Al)2 H 2 Si 2O5( Malachite is a carbonate mineral normally known as "copper carbonate" with the formula Cu 2 CO3[[hydroxide Tenorite is a Copper Oxide mineral with the simple formula CuO. Altogether there are sixteen known Iron Oxides and oxyhydroxides It is known as ruby copper due to its distinctive red color.
Cuprite was first described in 1845 and the name derives from the Latin cuprum for its copper content. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome.
Cuprite as a Gemstone
Though almost all crystals of cuprite are far too small to yield faceted gemstones, one unique deposit from Onganja, Southwest Africa, which was discovered back in the 1970s, rocked the gemological world by producing some crystals which were both large and gemmy. This article is about a music album For information about the minerals see Gemstone. South-West Africa (Afrikaans Suidwes-Afrika; German Südwestafrika) was the name of what is today the Republic of Namibia. Virtually every faceted stone over 1 carat (200 mg) in weight is from this single deposit, which has long been mined out. Most crystals were immediately snatched up by the major minerological museums of the world, further increasing the rarity of faceted gems.
The number of faceted gems over 2 carats (400 mg) is difficult to estimate, but according to Joel Arem, one-time curator for the Smithsonian National Gem and Mineral Collection in Washington DC, faceted cuprite of any size is considered one of the most collectible and spectacular gems in existence, with its deep garnet coloring and higher brilliance than a diamond. The Smithsonian Institution (smɪθsoʊnɪən is an educational and research institute and associated Museum complex administered and funded by the Government of The National Museum of Natural History is a Natural history Museum administered by the Smithsonian Institution, located on the National Washington DC ( formally the District of Columbia and commonly referred to as Washington, the District, or simply D Only the gem's soft nature prevents it from being among the most valuable jewelry stones. However, it is still one of the rarest and most sought of collector's gems, with gems over a few carats virtually impossible to find.
See also
References
- Hurlbut, Cornelius S. Bornite is a Sulfide mineral with chemical composition Cu 5 Fe[[sulfur S]]4 that crystallizes in the Orthorhombic system Tennantite is a Copper Arsenic Sulfosalt Mineral. Its chemical formula is Cu 12 As 4 S Tetrahedrite is a copper antimony Sulfosalt mineral with formula ( Cu, Fe)12 Sb 4 S 13 ; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed. , Wiley, ISBN 0-471-80580-7
- Mindat
- Webmineral data
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