英语词汇“hornblende”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

hornblende

horn·blende

H0278200 (hôrn′blĕnd′)n. The most common mineral in the amphibole group, CaNa(Mg,Fe)₄(Al,Fe,Ti)₃Si₆O₂₂(OH,F)₂ commonly green to black, found in igneous and metamorphic rocks.

[German : Horn, horn (from Middle High German, from Old High German; see ker- in Indo-European roots) + Blende, blende; see blende.]

hornblende

(ˈhɔːnˌblɛnd) n (Minerals) a black or greenish-black mineral of the amphibole group, found in igneous and metamorphic rocks. Composition: calcium magnesium iron sodium aluminium aluminosilicate. General formula: (Ca,Na)2.3(Mg,Fe,Al)5Si6(Si,Al)2O22(OH)2[C18: from German Horn horn + blende] ˌhornˈblendic adj

horn•blende

(ˈhɔrnˌblɛnd)

n. a dark green to black mineral of the amphibole group, containing calcium, magnesium, iron, and aluminosilicates. [1760–70; < German; see horn, blende] horn•blen′dic, adj.

horn·blende

(hôrn′blĕnd′) A common, green to black mineral found in many metamorphic and igneous rocks. It is composed of iron, calcium, magnesium, and other metals.

hornblende

A variety of amphibole.

Thesaurus

Noun

hornblende - a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and ironamphibole - a mineral or mineral variety belonging to the amphibole groupamphibole group - a group of minerals with similar crystal structures containing a silicate chain and combinations of chiefly sodium and calcium and magnesium and iron and aluminum

Translations

hornblende

hornblende:

see amphiboleamphibole
, any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and other elements.
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Hornblende

(1) The most common rock-forming mineral of the group of monoclinic amphiboles (common hornblende). Its approximate chemical composition is Ca₂Na[Mg, Fe]₄[Al,-Fe][(Si, Al)₄O₁₁]₂[OH, F]₂, with substantial variations in the ratios of basic components and with various element impurities (Na 3. Hornblende is characterized by two directions of well-developed cleavages intersecting at an angle of 124°.

Common hornblende is characteristic of intrusive rocks (granodiorites, syenites, diorites, hornblende gabbros), effusive rocks (andesites, basalts, porphyrites), and metamorphic (am-phibolites, hornblende gneisses) rocks. Common hornblende is a relatively stable mineral, but when acted upon by hydrothermal solutions it alters to chlorite, epidote, calcite, and quartz. In the process of weathering, it decomposes to form opal, carbonates, and various other minerals.

(2) The subgroup of calcium aluminiferous amphiboles that includes common hornblende, edenite, oligoclase, pargasite, and hastingsite.

REFERENCES

Deer, W. A., R. A. Howie, and J. Zussmann. Porodoobrazuiushchie mineraly, vol 2. Moscow, 1965. (Translated from English.)
Lodochnikov, V. N. Glavneishie porodoobrazuiushchie mineraly, 5th ed. Moscow, 1974.

A. S. MARFUNIN

hornblende

[′hȯrn‚blend] (mineralogy) A general name given to the monoclinic calcium amphiboles that form an extensive solid-solution series between the various metals in the generalized formula (Ca,Na)₂(Mg,Fe,Al)₅(Al,Si)₈O₂₂(OH,F)₂.

hornblende

a black or greenish-black mineral of the amphibole group, found in igneous and metamorphic rocks. Composition: calcium magnesium iron sodium aluminium aluminosilicate. General formula: (Ca,Na)_2.3(Mg,Fe,Al)₅Si₆(Si,Al)₂O₂₂(OH)₂

hornblende

horn·blende

hornblende

horn•blende

horn·blende

hornblende

hornblende

hornblende:

Hornblende

REFERENCES

hornblende

hornblende

hornblende

Words related to hornblende

noun a green to black mineral of the amphibole group

Related Words