hornblende in the Oxford-Paravia Italian Dictionary

Translations for hornblende in the English»Italian Dictionary

hornblende [Brit ˈhɔːnblɛnd, Am ˈhɔrnˌblɛnd] N

hornblende

orneblenda f

Translations for hornblende in the Italian»English Dictionary

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orneblenda

hornblende

Monolingual examples (not verified by PONS Editors)

English

The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende.

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The latter is for the most part a hornblende-biotite gneiss of sedimentary appearance.

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Other incorporated silicate minerals may include, very minor amounts of plagioclase feldspar, mica in the form of muscovite and/or biotite, and amphibole (often hornblende).

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The most abundant phenocryst minerals were hornblende and plagioclase, but an unusual phenocryst mineral was also presentthe calcium sulfate, anhydrite.

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When the feldspar is replaced by scapolite the new mineral is fresh and clear, enclosing often small grains of hornblende.

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The hoizon of the ore lie close to the contact of the gneiss with a red pegmatitic hornblende granite.

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The older stock consists of fine-grained biotite hornblende granodiorite while the younger stock comprises leucocratic biotite quartz monzonite.

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Usually it coexists with hornblende or actinolite, magnesium clinochlore chlorite, talc, serpentine-antigorite minerals or metamorphic pyroxene.

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Another group is rich in quartz (quartzites, quartz schists and quartzose gneisses), with variable amounts of white and black mica, garnet, feldspar, zoisite and hornblende.

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These spots may consist of radiate or brush-like feldspars (with some phlogopite and hornblende) or of quartz and feldspar.

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