labradorite

lab·ra·dor·ite

L0004800 (lăb′rə-dôr′īt′, -dô-rīt′)n. A usually brilliant blue or green variety of plagioclase feldspar that contains approximately equal proportions of sodium and calcium and occurs in silica-poor igneous rocks.

[After the Labrador (Peninsula).]

labradorite

(ˌlæbrəˈdɔːraɪt) n (Minerals) a blue, green, or reddish-brown feldspar mineral of the plagioclase series: used as a decorative stone. Formula: CaAl2Si2O8.NaAlSi3O8[C18: named after Labrador , where it was found; see -ite¹]

lab•ra•dor•ite

(ˈlæb rə dɔˌraɪt)

n. a feldspar mineral of the plagioclase group often showing a brilliant play of mostly blue and green colors. [1805–15; after Labrador, where first discovered; see -ite¹]

labradorite

(lăb`rədôrīt', lăbrədôr`īt), a variety of plagioclase feldsparfeldspar
or felspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
..... Click the link for more information. .

Labradorite

(named for a deposit on Labrador), a mineral of the soda-lime feldspars—the plagioclases. It is an isomorphic mixture of soda feldspar (albite) with lime feldspar (anorthite). The mineral contains 50–70 percent anorthite. It crystallizes in the triclinic system; it is colorless, white, or gray and forms complex twins, often with an attractive blue-green and golden iridescence. Its hardness is 6 on the Mohs’ scale and its density is 2,680–2,720 kg/m³. Labradorite enters into the composition of many basic magmatic rocks, including gabbros, basalts, and diabases. Rocks consisting almost entirely of labradorite are called labradoritites.

labradorite

[′lab·rə‚dȯ‚rīt] (mineralogy) A gray, blue, green, or brown plagioclase feldspar with composition ranging from Ab₅₀ An₅₀ to Ab₃₀ An₇₀, where Ab = NaAlSi₃O₈ and An = CaAl₂Si₂O₈; in the course of formation when the natural material cools, the feldspar sometimes exhibits a variously colored luster. Also known as Labrador spar.

单词	labradorite
释义	labradorite lab·ra·dor·ite L0004800 (lăb′rə-dôr′īt′, -dô-rīt′)n. A usually brilliant blue or green variety of plagioclase feldspar that contains approximately equal proportions of sodium and calcium and occurs in silica-poor igneous rocks. [After the Labrador (Peninsula).] labradorite (ˌlæbrəˈdɔːraɪt) n (Minerals) a blue, green, or reddish-brown feldspar mineral of the plagioclase series: used as a decorative stone. Formula: CaAl2Si2O8.NaAlSi3O8[C18: named after Labrador , where it was found; see -ite¹] lab•ra•dor•ite (ˈlæb rə dɔˌraɪt) n. a feldspar mineral of the plagioclase group often showing a brilliant play of mostly blue and green colors. [1805–15; after Labrador, where first discovered; see -ite¹] labradorite labradorite (lăb`rədôrīt', lăbrədôr`īt), a variety of plagioclase feldsparfeldspar or felspar , an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements. ..... Click the link for more information. . Labradorite (named for a deposit on Labrador), a mineral of the soda-lime feldspars—the plagioclases. It is an isomorphic mixture of soda feldspar (albite) with lime feldspar (anorthite). The mineral contains 50–70 percent anorthite. It crystallizes in the triclinic system; it is colorless, white, or gray and forms complex twins, often with an attractive blue-green and golden iridescence. Its hardness is 6 on the Mohs’ scale and its density is 2,680–2,720 kg/m³. Labradorite enters into the composition of many basic magmatic rocks, including gabbros, basalts, and diabases. Rocks consisting almost entirely of labradorite are called labradoritites. labradorite [′lab·rə‚dȯ‚rīt] (mineralogy) A gray, blue, green, or brown plagioclase feldspar with composition ranging from Ab₅₀ An₅₀ to Ab₃₀ An₇₀, where Ab = NaAlSi₃O₈ and An = CaAl₂Si₂O₈; in the course of formation when the natural material cools, the feldspar sometimes exhibits a variously colored luster. Also known as Labrador spar.
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