Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun 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.
from The Century Dictionary.
- noun A common mineral, crystallizing in the monoclinic system with a prismatic angle of 124½°.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) The common black, or dark green or brown, variety of amphibole. (See
amphibole .) It belongs to the aluminous division of the species, and is also characterized by its containing considerable iron. Also used as a general term to include the whole species. - noun (Geol.) a hornblende rock of schistose structure.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A green to black
amphibole mineral , of complex structure, formed in the late stages of cooling inigneous rock.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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This stone is a volcanic rock called hornblende, of very fine grain, with minute specks of mica.
Brittany & Its Byways Fanny Bury Palliser
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An examination of the stones which fell at Fort de France showed them to be of a variety of lava called hornblende and andesite.
Complete Story of the San Francisco Horror Trumbull White 1904
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The remaining rocks from here are richer in lime and iron, and show a series of gradual transitions from micacious granite, through grano-diorite to quartz diorite, with considerable quantities of dark mica, and green hornblende.
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Most significant is the presence of the Sinharaja Basic Zone, consisting of hornblende, pyriclasts, basic charnokites, pyroxene amphibolites and scapolite-bearing calc-granulites and blended with small amounts of quartzites, garnet-biotite gneisses and intermediate charnokites.
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Elsewhere, Precambrian granitic gneiss, Precambrian hornblende gneiss, and fanglomerate are common (Berg and others, 1980).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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Strange, scholastic, didactic, passionless, bloodless man, who denotes classes of souls as a botanist disposes of a carex, and visits doleful hells as a stratum of chalk or hornblende!
Representative Men 2006
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Six widespread tephras ~0.1–1.0 cm thick with rhyolitic to dacitic glass and/or phenocrysts of feldspar or hornblende are preserved in the glacial lakes of Las Cajas National Park, southern Ecuador.
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Dark trappean rocks full of hornblende have in many places burst through these schists, and appear in nodules on the surface.
A Popular Account of Dr. Livingstone's Expedition to the Zambesi and Its Tributaries 2004
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About Losito we found the trap had given place to hornblende schist, mica schist, and various schorly rocks.
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The remaining rocks from here are richer in lime and iron, and show a series of gradual transitions from micacious granite, through grano-diorite to quartz diorite, with considerable quantities of dark mica, and green hornblende.
The South Pole; an account of the Norwegian antarctic expedition in the 'Fram', 1910 to 1912 2003
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