feldspars
1feldspars — feldšpatai statusas T sritis chemija apibrėžtis Silikatų klasės mineralų grupė. atitikmenys: angl. feldspars rus. полевые шпаты; фельдшпаты ryšiai: sinonimas – putnagai sinonimas – lauko špatai …
2feldspars — A very common group of rock forming minerals [16] …
3feldspars — Смотри Шпаты полевые …
4feldspars — feld·spar || feldspÉ‘r / spÉ‘Ë n. any of a group of alumino silicates (Mineralogy) …
5Some typical occurrences of the rock-forming feldspars — ▪ Table Some typical occurrences of the rock forming feldspars Potassium feldspars* sanidine potassium rich volcanic rocks and near surface minor intrusions e.g., rhyolites, trachytes, and high temperature contact metamorphic rocks orthoclase… …
6Шпаты полевые — [feldspars] группа силикатов (алюмосиликаты Na, Ca, К, Ва) с непрерывными трехмерными каркасами из тетраэдров (Si, Al)O4, наиболее распространенные в земной коре (до 60 мас., %). Шпаты полевые имеют стеклянный блеск, среднюю спайность,… …
7feldspar — /feld spahr , fel /, n. any of a group of minerals, principally aluminosilicates of potassium, sodium, and calcium, characterized by two cleavages at nearly right angles: one of the most important constituents of igneous rocks. Also, felspar.… …
8Feldspar — is the name of a group of rock forming minerals which make up as much as 60% of the Earth s crust.Feldspar. [http://www.ima na.org/about industrial minerals/feldspar.asp What is Feldspar?] Industrial Minerals Association. Retrieved on July 18… …
9feldspathoid — /feld spa thoyd , fel /, Mineral. adj. 1. Also, feldspathoidal. of or pertaining to a group of minerals similar in chemical composition to certain feldspars except for a lower silica content. n. 2. a mineral of this group, as nepheline. [1895… …
10Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts …
