- perlitic structure
- перлитная структура (стали)
Англо-русский строительный словарь. 2013.
perlitic structure
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Perlitic — Per*lit ic, a. (Min.) Relating to or resembling perlite, or pearlstone; as, the perlitic structure of certain rocks. See {Pearlite}. [1913 Webster] … The Collaborative International Dictionary of English
perlite — perlitic /perr lit ik/, adj. /perr luyt/, n. Petrog. a volcanic glass in which concentric fractures impart a distinctive structure resembling masses of small spheroids, used as a plant growth medium. Also, pearlite. [1825 35; < F; see PEARL1,… … Universalium
Volcanic rock — is an igneous rock of volcanic origin. Texture Volcanic rocks are usually fine grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts are crystals that are larger than the matrix and are… … Wikipedia
Quartz-porphyry — Quartz porphyry, in petrology, is the name given to a group of hemi crystalline acid rocks containing porphyritic crystals of quartz in a fine grained matrix, usually of micro crystalline or felsitic structure. In specimens, the quartz appears as … Wikipedia
Pearlite — Pearl ite, Pearlstone Pearl stone , n. (Min.) A glassy volcanic rock of a grayish color and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. See Illust. under… … The Collaborative International Dictionary of English
Pearlstone — Pearlite Pearl ite, Pearlstone Pearl stone , n. (Min.) A glassy volcanic rock of a grayish color and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. See Illust. under… … The Collaborative International Dictionary of English
perlite — noun Etymology: French, from perle pearl Date: 1833 volcanic glass that has a concentric shelly structure, appears as if composed of concretions, is usually grayish and sometimes spherulitic, and when expanded by heat forms a lightweight… … New Collegiate Dictionary
Tachylite — (also spelled tachylyte) is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. It is a basic type of igneous rock that is decomposable by acids and readily fusible. The color is a… … Wikipedia
