horn·blende

(hôrn′blĕnd′)

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.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

hornblende

(ˈhɔːnˌblɛnd)

(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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

hornblende

A variety of amphibole.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

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

hornblende

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References in periodicals archive

Magnesian hornblende from a metamorphosed ultramafic body in southwestern Finland: crystal chemistry and petrological implications.

Provenance of heavy minerals in the Quaternary deposits of the Lemme outcrop, Estonia, based on optical microscopy, X-ray diffractometry and scanning electron microscope microanalysis/Raskete mineraalide paritolu Lemme paljandi Kvaternaari setetes, pohinedes optilisele mikroskoopiale, rontgendifraktomeetriale ja skaneerivale elektronmikroskoopiale

Mineralogical composition is dominated by quartz followed by calcite with low quantities of k-feldspars, plagioclase, dolomite, clay minerals and local occurrences of traces of aragonite and hornblende.

GEOCHEMISTRY OF THE GULF OF ADEN BEACH SANDS, AL-MUKALLA, YEMEN: PROVENANCE AND TECTONIC SETTING IMPLICATIONS

Garnet amphibolites mainly consist of hornblende, garnet and quartz with minor rutile, +- epidote and +- plagioclase.

PETROGRAPHIC STUDY OF METAMORPHOSED PANJAL TRAPS FROM THE KAGHAN VALLEY, NORTH PAKISTAN

The peaks at about 1400 [cm.sup.-1] and 2300-2380 [cm.sup.-1] are attributable to chlorite, talc, epidote, hornblende, etc.

FLOTATION COLLECTOR PREPARATION AND EVALUATION OF OIL SHALE

Three main geological units lie in the area of El Vapor district, (Fig 1): (i) San Lucas quartz-feldspathic gneisses (Gonzalez, 2001), which contains lenses of amphibolite and marble and are Proterozoic (Feininger et al., 1972); (ii) Segovia batholith of Jurassic age (160 [+ or -] 7 M.a., K/Ar in hornblende, Feininger et al., 1972), consists of a diorite with textural and compositional variations of quartz diorite and locally hornblende gabbro; and finally, (iii) Segovia sedimentary rocks in the west of Segovia mainly composed of black shales interbedded with siltstones, sandstones and intraformational conglomerates, which in the north of the area have been dated between the upper Aptian and the lower Albian (Feininger et al., 1972) based on macro-fauna dating.

Microthermometry and Raman spectroscopy of fluid inclusions from El Vapor gold mineralizations, Colombia/Microtermometria y espectroscopia Raman de inclusiones fluidas de las mineralizaciones auriferas de El Vapor, Colombia

Name 1 Carbuncle 2 K feldspar 3 Albite 4 Tektite 5 Magnetite 6 Demantoid 7 Oolitic hematite 8 Pink pyroxene 9 Idocrase 10 Black hematite 11 Biotite 12 Hornblende 13 Calcite 14 Labradorite 15 Magnesite 16 Rhodonite 17 Reniform hematite 18 Banded siliceous rocks 19 Diopside 20 Selenite 21 Alabaster 22 Anhydrite 23 Moonstone 24 Barite 25 Hypersthene Table 2: Emission lines for classification based on major elements from geological samples.

Classification of Geological Samples Based on Soft Independent Modeling of Class Analogy Using Laser-Induced Breakdown Spectroscopy

Geologically, the tectonic setting is embraced from Main Range, with an assortment of granitic rocks, comprising quartz, feldspars in several different proportions with hornblende and biotite minerals as the combined minerals [15].

DISTRIBUTION PATTERN OF NITRATE AND FLUORIDE IN SHALLOW DOMESTIC GROUNDWATER WELLS IN NORTHERN PARTS OF KELANTAN, MALAYSIA

The samples for flotation were taken from on-site samples of flotation, which were ground to 95% passing 0.045 mm, and contained 34.90% specularite and hematite, 8.70% magnetite, 0.20% limonite, 39.40% quartz, 11.40% chlorite and hornblende, and 4.90% calcite and dolomite.

Treatment and Recycling of the Process Water in Iron Ore Flotation of Yuanjiacun Iron Mine