Malachite
Malachite specimen
General
Category	Mineral
Chemical formula	Cu2CO3(OH)2
Identification
Color	Green
Crystal habit	Massive, botryoidal, stalactitic
Crystal system	Monoclinic - prismatic
Cleavage	Perfect
Fracture	Conchoidal to splintery
Mohs Scale hardness	3.5 - 4
Luster	Dull/vitreous in large quantities, silky in crystal form
Streak	green
Specific gravity	3.6 - 4

Malachite is a carbonate mineral normally known as "copper carbonate" with the formula Cu₂CO₃(OH)₂. This green-colored mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses. Individual crystals are rare but do occur as slender to acicular prisms. Pseudomorphs after more tabular or blocky azurite crystals also occur. Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution (2272 × 1704 pixel, file size: 1,011 KB, MIME type: image/jpeg) File historyClick on a date/time to view the file as it appeared at that time. ... For other uses, see Mineral (disambiguation). ... A chemical formula is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... In mineralogy, shape and size give rise to descriptive terms applied to the typical appearance, or habit of crystals. ... A crystal system is a category of space groups, which characterize symmetry of structures in three dimensions with translational symmetry in three directions, having a discrete class of point groups. ... In crystallography, the monoclinic crystal system is one of the 7 lattice point groups. ... Cleavage, in mineralogy, is the tendency of crystalline materials to split along definite planes, creating smooth surfaces, of which there are several named types: Basal cleavage: cleavage parallel to the base of a crystal, or to the plane of the lateral axes. ... For other uses, see Fracture (disambiguation). ... Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer. ... Lustre (American English: luster) is a description of the way light interacts with the surface of a crystal, rock or mineral. ... The streak (also called powder color) of a mineral is the color of the powder produced when it is dragged across a unweathered surface. ... Relative density (also known as specific gravity) is a measure of the density of a material. ... Wikipedia does not yet have an article with this exact name. ... A chemical formula is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... For other uses, see Copper (disambiguation). ... Ball-and-stick model of the carbonate ion, CO32− For other meanings, see Carbonate (disambiguation) In chemistry, a carbonate is a salt or ester of carbonic acid. ... Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ... In crystallography, the monoclinic crystal system is one of the 7 lattice point groups. ... Being shaped like a bunch of grapes. ... The Witchs Finger in the Carlsbad Caverns A stalagmite (from the Greek stalagma (Σταλαγμίτης), drop or drip) is a type of speleothem that rises from the floor of a limestone cave due to the dripping of mineralized solutions and the deposition of calcium carbonate. ... In geology, a pseudomorph is a mineral compound resulting from a substitution process in which the appearance and dimensions remain constant, but the mineral which makes up the chief component of the compound is replaced by another. ...

Occurrence and historical uses

Malachite often results from weathering of copper ores and is often found together with azurite (Cu₃(CO₃)₂(OH)₂), goethite, and calcite. Except for its vibrant green color, the properties of malachite are similar to those of azurite and aggregates of the two minerals occur frequently together. Malachite is more common than azurite and is typically associated with copper deposits associated with limestones, the source of the carbonate. For other uses, see Copper (disambiguation). ... For other uses, see Ore (disambiguation). ... // Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. ... Goethite, named after the German polymath Johann Wolfgang von Goethe, is an iron bearing oxide mineral found in soil and other low temperature environments. ... Doubly refracting Calcite from Iceberg claim, Dixon, New Mexico. ... For other uses, see Limestone (disambiguation). ...

Large quantities of malachite have been mined in the Urals. It is found in the Democratic Republic of Congo; Zambia; Tsumeb, Namibia; Ural mountains, Russia; Mexico; Broken Hill, New South Wales; England; Lyon; and in the Southwestern United States especially in Arkansas and Arizona. In Israel, malachite is extensively mined at Timna, often called King Solomon's Mines. Archeological evidence indicates that the mineral has been mined and smelted at the site for over 3,000 years. Most of Timna's current production is also smelted, but the finest pieces are worked into silver jewelry. The Ural Mountains, (Russian: Ура́льские го́ры = Ура́л) also known simply as the Urals, are a mountain range that run roughly north and south through western Russia. ... The Democratic Republic of the Congo, called Zaïre between 1971 and 1997, is a nation in central Africa. ... Tsumeb open cast pit, buildings and railway about 1931 Tsumeb is the capital city of the Oshikoto region in northern Namibia. ... Broken Hill Post Office Broken Hill is an isolated mining city and Local Government Area (see City of Broken Hill) in the far west of outback New South Wales, Australia, with a population of 21,000. ... For other uses, see England (disambiguation). ... This article is about the French city. ... This article is about the U.S. State. ... Official language(s) English Spoken language(s) English 74. ... This page is a candidate for speedy deletion. ... King Solomons Mines (1885) is a popular novel by the Victorian adventure writer and fabulist, Sir H. Rider Haggard. ...

Images

Malachite from the Democratic Republic of Congo Image File history File linksMetadata Download high-resolution version (1036x1068, 239 KB) a large hunk of Malachite at the National Museum of Natural History. ... The Democratic Republic of the Congo, called Zaïre between 1971 and 1997, is a nation in central Africa. ...	A polished slice of Malachite Photograph of a malachite specimen from Zaire taken by Dlloyd. ...	Malachite	Malachite crystals atop blue azurite, with brown cuprite on the white kaolinite Image File history File linksMetadata No higher resolution available. ... // Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. ... Cuprite Cuprite is a mineral composed of copper(I) oxide Cu2O, and is a minor ore of copper. ... Kaolin redirects here. ...
Ball-and-stick model of malachite's unit cell Image File history File links Size of this preview: 753 × 600 pixels Full resolution (1100 × 876 pixel, file size: 317 KB, MIME type: image/png) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Malachite ... armchair conformational isomerism of Cyclohexane. ... In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ...	Polished Malachite

Etymology and history

The stone's name derives (via Latin and French) from Greek molochitis, "mallow-green stone", from molochē, variant of malachē, "mallow". Malachite was used as a mineral pigment in green paints from antiquity until about 1800. The pigment is moderately lightfast, very sensitive to acids and varying in color. The natural form was being replaced by its synthetic form, verditer amongst other synthetic greens. It is also used for decorative purposes, such as in the Malachite Room in the Hermitage, which features a large malachite vase (unknown scale). "The Tazza", one of the largest pieces of malachite in North America and a gift from Tsar Nicholas II, stands as the focal point in the center of the room of Linda Hall Library. For other uses, see Latins and Latin (disambiguation). ... Mallow is the common name of several closely related genera of plant in the family Malvaceae: Althaea – Marsh mallow Callirhoe – Poppy mallow Kosteletzkya – Seashore mallow Lavatera – Tree mallow or rose mallow Malacothamnus – Santa Cruz Island bush-mallow Malva – Mallow Malvaviscus – Turks cap mallow Sidalcea – Greek mallow Sphaeralcea – Globemallow Plants... // ON MAY 5 1853 MR.FADER HAD SEX WITH A MAN NAME MR WIEN THEN THEY HAD SON NAMEDMRS COTURE AND MR MANOOGIAN WENT INTO MRS HASKELLS OFFICE NAKED AND DANCED AROUND AND MASTERBATED ON HER CHEST AND SHE LICKED IT OFF THEN THEY HAD ORAL SEEX WITH NAPLOEAN OF... For other uses, see Acid (disambiguation). ... The State Hermitage Museum (Russian: ) in Saint Petersburg, Russia is one of the largest museums in the world, with 3 million works of art (not all on display at once), [1] and one of the oldest art galleries and museums of human history and culture in the world. ... A 19th-century photo of one of the halls in the Hermitage Museum. ... A Tazza is a shallow saucer-like dish either mounted on a stem and foot or on a foot alone. ... Tsar Nicholas II (18 May 1868 to 17 July 1918)1 was the last crowned Emperor of Russia. ... Inside the Linda Hall Library. ...

References

• Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., John Wiley and Sons, New York ISBN 0-471-80580-7
• Mineral Galleries
• Webmineral data
• Mindat
• Virtual tour of the Malachite Room

See also

• aventurine
• dioptase

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Malachite