Amphibolite
Definition
A regional metamorphic rock, coarse or fine-grained, structurally formed from a crystalline mixture dominated by amphiboles (especially hornblende) and plagioclase, often accompanied by accessory minerals such as quartz, garnet, or epidote. This type of geological structure forms under high temperature and pressure conditions, specific to medium to advanced metamorphic facies.
Bilingual Equivalents
- Amphibolite
- Metamorphic rock
Grammatical & Source Details
| Inflection Type | Masculine noun, regular structural plural variations following standard geological nomenclature. |
| Formation | Geological neologism derived from 'amphibole' combined with the standard lithological suffix '-ite' (from Greek lithos - stone). |
| Spelling / Pronunciation | [æm.ˈfɪb.ə.laɪt] |
| Source | International Compendium of Petrography, Metamorphic Facies, and Mineralogy |
Contextual Usage Examples
RO: Geologul a colectat un eșantion de amfibolit cu inserții de garnat din masivul muntos excavat.
EN: The geologist collected an amphibolite sample with garnet inclusions from the excavated mountain massif.
RO: Analiza structurală de laborator a demonstrat că acest amfibolit s-a format prin recristalizarea unui basalt străvechi.
EN: The laboratory structural analysis demonstrated that this amphibolite was formed through the recrystallization of an ancient basalt.
RO: Textura liniară pe care o prezintă o bucată de amfibolit indică direcția forțelor tectonice din timpul metamorfismului.
EN: The linear texture presented by a piece of amphibolite indicates the direction of tectonic forces during metamorphism.
Idioms & Phrases
Facies de amfibolit / Amphibolite facies
RO: Interval de condiții termice și barice din scoarța terestră în care mineralele se restructurează stabil sub formă de amfiboli.
EN: A range of thermal and baric conditions within the earth's crust where minerals stably restructure into amphiboles.
Garnat-amfibolit / Garnet-amphibolite
RO: Varietate petrografică particulară caracterizată prin prezența unor cristale sferice mari de garnat roșu în masa rocii.
EN: A particular petrographic variety characterized by the presence of large spherical red garnet crystals within the rock mass.
Textură de amfibolit / Amphibolite texture / Nematoblastic structure
RO: Configurație anatomică minerală definită prin orientarea paralelă a cristalelor prismatice lungi de hornblendă.
EN: A mineral anatomical configuration defined by the parallel orientation of long prismatic hornblende crystals.
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