AskDefine | Define mineral

Dictionary Definition

mineral adj
1 relating to minerals; "mineral elements"; "mineral deposits"
2 of or containing or derived from minerals; "a mineral deposit"; "mineral water" [ant: animal, vegetable]
3 composed of matter other than plant or animal; "the inorganic mineral world" n : solid homogeneous inorganic substances occurring in nature having a definite chemical composition

User Contributed Dictionary

English

Pronunciation

Noun

  1. Any naturally occuring inorganic material that has a (more or less) definite chemical composition and characteristic physical properties.
  2. Any inorganic material (as distinguished from animal or vegetable).
  3. Any inorganic element that is essential to nutrition; a dietary mineral.
  4. Mineral water.
  5. A soft drink, particularly a single serve bottle or can.

Translations

in geology
  • Czech: minerál
  • Dutch: delfstof, mineraal
  • Finnish: mineraali
  • French: minéral
  • Hindi: खनिज
  • Italian: minerale
  • Japanese: 鉱物 (こうぶつ, kōbutsu)
  • Norwegian: mineral
  • Spanish: mineral
as opposed to animal and vegetable
in nutrition
  • Dutch: mineraal
  • Finnish: hivenaine
  • French: minéral
  • Japanese: ミネラル
  • Norwegian: mineral
mineral water
Translations to be checked

Related terms

Adjective

mineral
  1. of, related to, or containing minerals

Translations

in geology

Crimean Tatar

Noun

mineral

Declension

Adjective

mineral
  1. mineral.
Mineral suv = mineral water.

References

Useinov-Mireev 2002}}

Norwegian

  1. [[#English">mineral

Extensive Definition

A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition, a highly ordered atomic structure and specific physical properties. A rock, by comparison, is an aggregate of minerals and need not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy.
    • Sub-metallic -slightly less than metallic reflectivity: magnetite
    • Non-metallic lusters:
      • Adamantine - brilliant, the luster of diamond also cerussite and anglesite
      • Vitreous -the luster of a broken glass: quartz
      • Pearly - iridescent and pearl-like: talc and apophyllite
      • Resinous - the luster of resin: sphalerite and sulfur
      • Silky - a soft light shown by fibrous materials: gypsum and chrysotile
      • Dull/earthy -shown by finely crystallized minerals: the kidney ore variety of hematite
  • Color indicates the appearance of the mineral in reflected light or transmitted light for translucent minerals (i.e. what it looks like to the naked eye).
    • Iridescence - the play of colors due to surface or internal interference. Labradorite exhibits internal iridescence whereas hematite and sphalerite often show the surface effect.
  • Streak refers to the color of the powder a mineral leaves after rubbing it on an unglazed porcelain streak plate. Note that this is not always the same color as the original mineral.
  • Cleavage describes the way a mineral may split apart along various planes. In thin sections, cleavage is visible as thin parallel lines across a mineral.
  • Fracture describes how a mineral breaks when broken contrary to its natural cleavage planes.
    • Chonchoidal fracture is a smooth curved fracture with concentric ridges of the type shown by glass.
    • Hackley is jagged fracture with sharp edges.
    • Fibrous
    • Irregular
  • Specific gravity relates the mineral mass to the mass of an equal volume of water, namely the density of the material. While most minerals, including all the common rock-forming minerals, have a specific gravity of 2.5 - 3.5, a few are noticeably more or less dense, e.g. several sulfide minerals have high specific gravity compared to the common rock-forming minerals.
  • Other properties: fluorescence (response to ultraviolet light), magnetism, radioactivity, tenacity (response to mechanical induced changes of shape or form), piezoelectricity and reactivity to dilute acids.

Chemical properties of minerals

Minerals may be classified according to chemical composition. They are here categorized by anion group. The list below is in approximate order of their abundance in the Earth's crust. The list follows the Dana classification system.

Silicate class

The largest group of minerals by far are the silicates (most rocks are ≥95% silicates), which are composed largely of silicon and oxygen, with the addition of ions such as aluminium, magnesium, iron, and calcium. Some important rock-forming silicates include the feldspars, quartz, olivines, pyroxenes, amphiboles, garnets, and micas.

Carbonate class

The carbonate minerals consist of those minerals containing the anion (CO3)2- and include calcite and aragonite (both calcium carbonate), dolomite (magnesium/calcium carbonate) and siderite (iron carbonate). Carbonates are commonly deposited in marine settings when the shells of dead planktonic life settle and accumulate on the sea floor. Carbonates are also found in evaporitic settings (e.g. the Great Salt Lake, Utah) and also in karst regions, where the dissolution and reprecipitation of carbonates leads to the formation of caves, stalactites and stalagmites. The carbonate class also includes the nitrate and borate minerals.

Sulfate class

Sulfates all contain the sulfate anion, SO42-. Sulfates commonly form in evaporitic settings where highly saline waters slowly evaporate, allowing the formation of both sulfates and halides at the water-sediment interface. Sulfates also occur in hydrothermal vein systems as gangue minerals along with sulfide ore minerals. Another occurrence is as secondary oxidation products of original sulfide minerals. Common sulfates include anhydrite (calcium sulfate), celestine (strontium sulfate), barite (barium sulfate), and gypsum (hydrated calcium sulfate). The sulfate class also includes the chromate, molybdate, selenate, sulfite, tellurate, and tungstate minerals.

Halide class

The halides are the group of minerals forming the natural salts and include fluorite (calcium fluoride), halite (sodium chloride), sylvite (potassium chloride), and sal ammoniac (ammonium chloride). Halides, like sulfates, are commonly found in evaporitic settings such as playa lakes and landlocked seas such as the Dead Sea and Great Salt Lake. The halide class includes the fluoride, chloride, bromide and iodide minerals.

Oxide class

Oxides are extremely important in mining as they form many of the ores from which valuable metals can be extracted. They also carry the best record of changes in the Earth's magnetic field. They commonly occur as precipitates close to the Earth's surface, oxidation products of other minerals in the near surface weathering zone, and as accessory minerals in igneous rocks of the crust and mantle. Common oxides include hematite (iron oxide), magnetite (iron oxide), chromite (iron chromium oxide), spinel (magnesium aluminium oxide - a common component of the mantle), ilmenite (iron titanium oxide), rutile (titanium dioxide), and ice (hydrogen oxide). The oxide class includes the oxide and the hydroxide minerals.

Sulfide class

Many sulfide minerals are economically important as metal ores. Common sulfides include pyrite (iron sulfide - commonly known as fools' gold), chalcopyrite (copper iron sulfide), pentlandite (nickel iron sulfide), and galena (lead sulfide). The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, and the sulfosalts (sulfur and a second anion such as arsenic).

Phosphate class

The phosphate mineral group actually includes any mineral with a tetrahedral unit AO4 where A can be phosphorus, antimony, arsenic or vanadium. By far the most common phosphate is apatite which is an important biological mineral found in teeth and bones of many animals. The phosphate class includes the phosphate, arsenate, vanadate, and antimonate minerals.

Element class

The elemental group includes metals and intermetallic elements (gold, silver, copper), semi-metals and non-metals (antimony, bismuth, graphite, sulfur). This group also includes natural alloys, such as electrum (a natural alloy of gold and silver), phosphides, silicides, nitrides and carbides (which are usually only found naturally in a few rare meteorites).

Organic class

The organic mineral class includes biogenic substances in which geological processes have been a part of the genesis or origin of the existing compound. Minerals of the organic class include various oxalates, mellitates, citrates, cyanates, acetates, formates, hydrocarbons and other miscellaneous species. Examples include whewellite, moolooite, mellite, fichtelite, carpathite, evenkite and abelsonite.

See also

References

mineral in Afrikaans: Mineraal
mineral in Arabic: معدن
mineral in Min Nan: Khòng-bu̍t
mineral in Belarusian: Мінерал
mineral in Bosnian: Minerali
mineral in Bulgarian: Минерал
mineral in Catalan: Mineral
mineral in Czech: Minerál
mineral in Welsh: Mwyn
mineral in German: Mineral
mineral in Estonian: Mineraal
mineral in Modern Greek (1453-): Ορυκτό
mineral in Spanish: Mineral
mineral in Esperanto: Mineralo
mineral in Basque: Mea
mineral in Persian: کانی (معدن)
mineral in French: Minéral
mineral in Irish: Mianra
mineral in Galician: Mineral
mineral in Korean: 광물
mineral in Hindi: खनिज
mineral in Croatian: Minerali
mineral in Indonesian: Mineral
mineral in Icelandic: Steind
mineral in Italian: Minerale
mineral in Hebrew: מינרל
mineral in Kazakh: Минерал
mineral in Lao: ແຮ່ທາດ
mineral in Latin: Minerale
mineral in Latvian: Minerāls
mineral in Lithuanian: Mineralas
mineral in Lombard: Mineràj
mineral in Hungarian: Ásvány
mineral in Macedonian: Минерал
mineral in Malay (macrolanguage): Mineral
mineral in Mongolian: Эрдэс
mineral in Dutch: Mineraal
mineral in Japanese: 鉱物
mineral in Norwegian: Mineral
mineral in Norwegian Nynorsk: Mineral
mineral in Low German: Mineral
mineral in Polish: Minerał
mineral in Portuguese: Mineral
mineral in Romanian: Mineral
mineral in Quechua: Qiqlla
mineral in Russian: Минерал
mineral in Sicilian: Minirali
mineral in Simple English: Mineral
mineral in Slovak: Nerast
mineral in Slovenian: Mineral
mineral in Serbian: Минерал
mineral in Serbo-Croatian: Minerali
mineral in Sundanese: Mineral
mineral in Finnish: Mineraali
mineral in Swedish: Mineral
mineral in Tamil: கனிமம்
mineral in Thai: แร่
mineral in Vietnamese: Khoáng vật
mineral in Turkish: Mineral
mineral in Ukrainian: Мінерали
mineral in Yiddish: מינעראל
mineral in Chinese: 礦物

Synonyms, Antonyms and Related Words

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