- cryptocrystalline rock
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криптокристаллическая порода
English-Russian dictionary of geology. 2011.
cryptocrystalline rock
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Cryptocrystalline — is a rock texture made up of such minute crystals that its crystalline nature is only vaguely revealed even microscopically in thin section by transmitted polarized light. Among the sedimentary rocks, chert and flint are cryptocrystalline.… … Wikipedia
rock anhydrite — A sedimentary rock (evaporite) composed chiefly of mineral anhydrite (anhydrous CaSO4); The rock is generally massive, cryptocrystalline, and may exhibit rhythmic sedimentation (rhymites). Compare: rock gypsum, rock halite. SW … Glossary of landform and geologic terms
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category … Wikipedia
Chert — For the Spanish municipality, see Xert. Chert Chert ( / … Wikipedia
Turquoise — For other uses, see Turquoise (disambiguation). Turquoise Turquoise (tumble finished) one inch (25 mm) long. This pebble is greenish and therefore low grade General … Wikipedia
Chrysoprase — This article is about the mineral. For the fictional character, see Trolls (Discworld). Chrysoprase (Poland) Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small… … Wikipedia
Agate — For other uses, see Agate (disambiguation). Agate Banded agate (agate like onyx); the specimen is 2.5 cm (1 inch) wide General Category … Wikipedia
Opal — For other uses, see Opal (disambiguation). Opal An opal bracelet. The stone size is 18 by 15 mm (0.7 by 0.6 in) General Category … Wikipedia
Normandy Archaeological Project — The Normandy Archaeological Project was a rescue excavation designed to preserve the archaeological history of the area before it became submerged by the construction of the Normandy Reservoir Dam through funding from the Tennessee Valley… … Wikipedia
Glossary of geology terms — Here is a glossary of Geological terms.A*Abyssal plain Flat or very gently sloping areas of the deep ocean basin floor. *Absolute dating the process of determining a specific date (in years or some other unit of time) for an archaeological,… … Wikipedia
