- authigenic mineral
- 自生矿物
English-Chinese geology dictionary (英汉地质大词典). 2013.
authigenic mineral
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Authigenic — An authigenic mineral or sedimentary rock deposit is one that was generated where it is found or observed. Can be used to characterize metamorphic minerals formed in situ during metamorphism, or to characterize sedimentary minerals formed during… … Wikipedia
Concretion — For other uses, see enterolith and nodule (geology). Septaria redirects here. For the genus of gastropods, see Septaria (gastropod). Concretions on Bowling Ball Beach (Mendocino County, California) weather out of steeply tilted Cenozoic mudstone… … Wikipedia
Aegirine — crystals in matrix General Category Silicate mineral, Pyroxene … Wikipedia
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Richard L. Hay — Richard LeRoy Hay (April 29 1929 ndash; February 10 2006) was an American geologist whose most famous work was as the principal geologist working with Mary Leakey at Olduvai Gorge, the site of many important hominid finds in the study of human… … Wikipedia
Fossil — For other uses, see Fossil (disambiguation). Three small ammonite fossils, each approximately 1.5 cm across … Wikipedia
Ikaite — is the mineral name for the hexahydrate of calcium carbonate, CaCO3·6H2O. Ikaite is colorless when pure. DistributionIt is usually considered a rare mineral, but this is likely due to difficulty in preserving samples. It was first discovered in… … Wikipedia
Oil shale geology — Main article: Oil shale Outcrop of Ordovician kukersite oil shale, northern Estonia. Oil shale geology is a branch of geologic sciences which studies the formation and composition of … Wikipedia
coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… … Universalium
albite — albitic /al bit ik/, adj. /al buyt/, n. Mineral. the sodium end member of the plagioclase feldspar group, light colored and found in alkalic igneous rocks. [1835 45; < L alb(us) white + ITE1] * * * Common feldspar mineral, a sodium… … Universalium
Indian Ocean — an ocean S of Asia, E of Africa, and W of Australia. 28,357,000 sq. mi. (73,444,630 sq. km). * * * Indian Ocean Introduction Indian Ocean Background: The Indian Ocean is the third largest of the world s five oceans (after the Pacific Ocean and… … Universalium
