hornblende

(redirected from hornblendes)
Also found in: Thesaurus, Encyclopedia.
Related to hornblendes: biotite, augite, tremolite

horn·blende

 (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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hornblende - a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron
amphibole - a mineral or mineral variety belonging to the amphibole group
amphibole 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
References in periodicals archive ?
These elements were consequently concentrated in apatite, titanite and hornblendes due to their high Kd for these elements (Lopez-Ruiz & Cebria 1990; Klein et al.
The greenish dyke is predominantly made up of plagioclase, hornblende, chlorite and minor quartz in a holocrystalline porphyritic texture.
In amphibolites the hornblendes are interlayered with plagioclase defining clear schistosity (Fig.
The garnetiferous amphibolite consists of hornblende plagioclase and garnet with minor minerals like epidote quartz apatite and magnetite.
The first texture is defined by hornblendes, the second one by plagioclase, quartz, and the epidote group, and the last one by garnet (Figure 3c).
A K/Ar age analysis on a hornblende from an amphibolite by Restrepo & Toussaint (1976) indicating 110 [+ or -] 5 Ma is interpreted as the age of metamorphism.
came from the dissolution of soil mineral particles, such as apatite, feldspars, micas and hornblendes (Landeweert et al.
Ectomycorrhizal weathering of the soil minerals muscovite and hornblende.
The oldest age is for the separated metamorphic hornblendes, and the youngest for the plagioclases separated from the amphibolite SE10, perhaps enriched in potassium during fluids circulation.
The blocks are serpentinites, dolerites and metagabbros made of hornblende phenocrysts and prehnite.
Jakes and White (1972) give a thorough study of hornblendes from cale-alkaline volcanic rocks of island arcs and continental margins.