Andesite
Definition
An effusive (volcanic) igneous rock with a microlitic or porphyritic texture, gray, brown, or greenish in color, mainly composed of plagioclase feldspar (such as andesine) and ferromagnesian minerals (amphiboles, pyroxenes, or biotite). It has a wide distribution in eruption areas and is intensely used in construction as dimension stone, paving, gravel, or structural aggregate due to its hardness.
Bilingual Equivalents
- Andesite
Grammatical & Source Details
| Inflection Type | Neuter lithological noun with standard plural and genitive structural paradigms. |
| Formation | International petrographic term derived from the Andes location using the specific rock-naming suffix '-ite'. |
| Spelling / Pronunciation | [an.de.ˈzit] |
| Source | Manual of Systematic Petrography and Industrial Stone Specifications |
Contextual Usage Examples
RO: Pavajul din centrul istoric al orașului a fost realizat integral din cuburi de andezit extrase local.
EN: The paving of the city's historical center was made entirely of locally extracted andesite cubes.
RO: Lanțul muntos al Carpaților Orientali adăpostește structuri vulcanice masive formate predominant din andezit.
EN: The Eastern Carpathians mountain chain houses massive volcanic structures predominantly formed of andesite.
RO: Cercetătorul a clasificat roca drept un andezit cu piroxeni pe baza fenocristalelor identificate.
EN: The researcher classified the rock as a pyroxene andesite based on the identified phenocrysts.
Idioms & Phrases
Andezit cu biotit / Biotite andesite
RO: Varietate specifică de rocă efuzivă care conține foițe strălucitoare de mică neagră, vizibile cu ochiul liber.
EN: A specific variety of effusive rock containing shiny flakes of black mica, visible to the naked eye.
Carieră de andezit / Andesite quarry
RO: Exploatare minieră la suprafață de unde se extrag blocuri masive de piatră destinate concasării ori fasonării.
EN: An open-pit mining operation from which massive stone blocks intended for crushing or shaping are extracted.
Textură porfirică de andezit / Porphyritic andesite texture
RO: Configurație structurală caracterizată prin cristale mari înglobate într-o masă fundamentală microcristalină.
EN: A structural configuration characterized by large crystals embedded in a microcrystalline groundmass.
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