glauconite

glau·co·nite

G0145800 (glô′kə-nīt′)n. A greenish mineral of the mica group, a hydrous silicate of potassium, iron, aluminum, or magnesium, (K,Na)(Al,Fe,Mg)₂(Al,Si)₄O₁₀(OH)₂, found in greensand and used as a fertilizer and water softener.

[German Glaukonit : Greek glaukon, neuter of glaukos, gray + -ite.]

glau′co·nit′ic (-nĭt′ĭk) adj.

glauconite

(ˈɡlɔːkəˌnaɪt) n (Minerals) a green mineral consisting of the hydrated silicate of iron, potassium, aluminium, and magnesium: found in greensand and other similar rocks. Formula: (K,Na,Ca)0.5-1(Fe,Al,Mg)2(Si,Al)4O10(OH)2.nH2O[C19: from Greek glaukon, neuter of glaukos bluish-green + -ite¹; see glaucous] glauconitic adj

glau•co•nite

(ˈglɔ kəˌnaɪt)

n. a greenish micaceous mineral, mainly a hydrous silicate of potassium, aluminum, and iron, occurring in greensand and clays. [1830–40; < Greek glaukón, neuter of glaukós (see glaucous) + -ite¹] glau`co•nit′ic (-kəˈnɪt ɪk) adj.

Thesaurus

Noun

glauconite - a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensandmineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

Glauconite

glauconite

[′glȯ·kə‚nīt] (mineralogy) K₁₅(Fe,Mg,Al)_4-6(Si,Al)₈O₂₀(OH)₄ A type of clay mineral; it is dioctohedral and occurs in flakes and as pigmentary material.

Glauconite

a mineral, hydrated iron aluminosilicate belonging to the hydromica group. It is characterized by variable and complex chemical composition; its main components are silica (49-56 percent), ferrous and ferric oxides (up to 21 percent), aluminum oxide (up to 18 percent), potassium oxide (up to 10 percent), magnesium oxide (up to 7 percent), and water (up to 13 percent). It crystallizes in the monoclinic system.

The color of glauconite is green (from dark green, almost black, to olive green). Its hardness on the mineralogical scale is 2-3, and its density is 2,200-2,300 kg/m³. Its capacity for absorbing water, as well as for ion exchange, is considerable. It is found among sedimentary rocks as round grains of cryp-tocrystalline structure, less frequently as small crystals of roughly hexagonal shape. It is formed at the bottom of the sea, where it settles as a gel. Cases of the formation of glauconite through the substitution of grains of biotite and other minerals in marine ooze are known. Glauconite is widespread in sedimentary rocks of various ages, mainly Mesozoic and Cenozoic.

Because of its capacity for cation exchange, glauconite is used to soften water and, since it contains a considerable amount of potassium oxide, as a soil fertilizer. It is also used for making green paint.

glauconite

glau·co·nite

glauconite

glau•co•nite

Glauconite

glauconite

Glauconite

glauconite

Words related to glauconite

noun a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum

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