marcasite

enUK

mar·ca·site

M0100800 (mär′kə-sīt′, -zīt′)n.1. A mineral with the same composition as pyrite, FeS₂, but differing in crystal structure. Also called white iron pyrites.2. An ornament of pyrite, polished steel, or white metal.

[Middle English, from Medieval Latin marcasīta, from Arabic marqašīṯā, from Aramaic marqəšitā, from Akkadian marḫašu, from marḫaši, ancient region in the eastern Iranian plateau.]

mar′ca·sit′i·cal (-sĭt′ĭ-kəl) adj.

marcasite

(ˈmɑːkəˌsaɪt) n1. (Minerals) a metallic pale yellow mineral consisting of iron sulphide in orthorhombic crystalline form used in jewellery. Formula: FeS22. (Jewellery) a cut and polished form of steel or any white metal used for making jewellery[C15: from Medieval Latin marcasīta, from Arabic marqashītā, perhaps from Persian] marcasitical adj

mar•ca•site

(ˈmɑr kəˌsaɪt)

n. 1. a common mineral, iron sulfide, FeS₂, chemically identical to pyrite but crystallizing in the orthorhombic system. 2. a. a crystallized form of this, used for jewelry. b. any mineral resembling this form or any substance imitating it, esp. as used in jewelry. [1375–1425; < Medieval Latin marcasīta < Arabic < Aramaic] mar`ca•sit′i•cal (-ˈsɪt ɪ kəl) adj.

Translations

marcassite

marcasite

enUK

marcasite

(mär`kəsīt) or

white iron pyrites,

a mineral closely resembling and having the same chemical composition (FeS₂) as pyritepyrite
or iron pyrites
, pale brass-yellow mineral, the bisulfide of iron, FeS₂. It occurs most commonly in crystals (belonging to the isometric system and usually in the form of cubes and pyritohedrons) but is also found in massive, granular, and stalactite
..... Click the link for more information. . It differs from pyrite in that it is paler in color, becomes darker upon oxidation, and crystallizes in the orthorhombic system. Twinned crystals resembling cockscombs (cockscomb pyrites) or spearheads (spear pyrites) are of common occurrence. The mineral occurs in marls, clays, and limestones in many parts of the world.

Marcasite

(also white iron pyrite), a mineral, a polymorphic variety of natural disulfide of iron, FeS₂. Marcasite crystallizes in the orthorhombic system. The luster is metallic. Of bronze-yellow color, which changes to gray along the crystal surface, the mineral forms spear-shaped, often complex, twin crystals, comb-like and round concretions, or sooty black masses (melnikovitemarcasite). Marcasite has a hardness of 6-6.5 on Mohs’ scale and a density of 4,850- 4,900 kg/m³. It usually forms from natural subacid solutions at temperatures lower than the temperature at which pyrite forms. Marcasite is found in hydrothermal deposits in association with pyrite, pyrrhotite, and other sulfides; it often replaces pyrrhotite in the oxidized zone of sulfide deposits. Marcasite occurring in sedimentary rocks is particularly widespread in Carboniferous deposits containing sand and clay, where it forms irregular nodular and concretionary formations. The mineral is used in the preparation of sulfuric acid.

REFERENCE

Mineraly; Spravochnik, vol. 1. Moscow, 1960.

marcasite

[′mär·kə‚sīt] (mineralogy) FeS₂ A pale bronze-yellow to nearly white mineral, crystallizing in the orthorhombic system; hardness is 6-6.5 on Mohs scale, and specific gravity is 4.89.

marcasite

a metallic pale yellow mineral consisting of iron sulphide in orthorhombic crystalline form used in jewellery. Formula: FeS₂

单词	marcasite
释义	marcasite enUK mar·ca·site M0100800 (mär′kə-sīt′, -zīt′)n.1. A mineral with the same composition as pyrite, FeS₂, but differing in crystal structure. Also called white iron pyrites.2. An ornament of pyrite, polished steel, or white metal. [Middle English, from Medieval Latin marcasīta, from Arabic marqašīṯā, from Aramaic marqəšitā, from Akkadian marḫašu, from marḫaši, ancient region in the eastern Iranian plateau.] mar′ca·sit′i·cal (-sĭt′ĭ-kəl) adj. marcasite (ˈmɑːkəˌsaɪt) n1. (Minerals) a metallic pale yellow mineral consisting of iron sulphide in orthorhombic crystalline form used in jewellery. Formula: FeS22. (Jewellery) a cut and polished form of steel or any white metal used for making jewellery[C15: from Medieval Latin marcasīta, from Arabic marqashītā, perhaps from Persian] marcasitical adj mar•ca•site (ˈmɑr kəˌsaɪt) n. 1. a common mineral, iron sulfide, FeS₂, chemically identical to pyrite but crystallizing in the orthorhombic system. 2. a. a crystallized form of this, used for jewelry. b. any mineral resembling this form or any substance imitating it, esp. as used in jewelry. [1375–1425; < Medieval Latin marcasīta < Arabic < Aramaic] mar`ca•sit′i•cal (-ˈsɪt ɪ kəl) adj. Translations marcassite marcasite enUK marcasite (mär`kəsīt) or white iron pyrites, a mineral closely resembling and having the same chemical composition (FeS₂) as pyritepyrite or iron pyrites , pale brass-yellow mineral, the bisulfide of iron, FeS₂. It occurs most commonly in crystals (belonging to the isometric system and usually in the form of cubes and pyritohedrons) but is also found in massive, granular, and stalactite ..... Click the link for more information. . It differs from pyrite in that it is paler in color, becomes darker upon oxidation, and crystallizes in the orthorhombic system. Twinned crystals resembling cockscombs (cockscomb pyrites) or spearheads (spear pyrites) are of common occurrence. The mineral occurs in marls, clays, and limestones in many parts of the world. Marcasite (also white iron pyrite), a mineral, a polymorphic variety of natural disulfide of iron, FeS₂. Marcasite crystallizes in the orthorhombic system. The luster is metallic. Of bronze-yellow color, which changes to gray along the crystal surface, the mineral forms spear-shaped, often complex, twin crystals, comb-like and round concretions, or sooty black masses (melnikovitemarcasite). Marcasite has a hardness of 6-6.5 on Mohs’ scale and a density of 4,850- 4,900 kg/m³. It usually forms from natural subacid solutions at temperatures lower than the temperature at which pyrite forms. Marcasite is found in hydrothermal deposits in association with pyrite, pyrrhotite, and other sulfides; it often replaces pyrrhotite in the oxidized zone of sulfide deposits. Marcasite occurring in sedimentary rocks is particularly widespread in Carboniferous deposits containing sand and clay, where it forms irregular nodular and concretionary formations. The mineral is used in the preparation of sulfuric acid. REFERENCE Mineraly; Spravochnik, vol. 1. Moscow, 1960. marcasite [′mär·kə‚sīt] (mineralogy) FeS₂ A pale bronze-yellow to nearly white mineral, crystallizing in the orthorhombic system; hardness is 6-6.5 on Mohs scale, and specific gravity is 4.89. marcasite a metallic pale yellow mineral consisting of iron sulphide in orthorhombic crystalline form used in jewellery. Formula: FeS₂
随便看	acumen engineered solutions international, inc. acumentin acumg acuminate acuminated acuminate leaf acuminately acuminates acuminating acumination acuminose acuminous acumtea acun acuna quinnell financial consultants acunet bandwidth manager acuns a cunt a cunt fart a cunt-fart a cunt hound a cunt-hound acunu acuny acuo