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Classification Of Organic Minerals
Some organic compounds are valid minerals, recognized by the CNMNC ( IMA). Nickel–Strunz classification −10- Organic compounds *Abbreviations: **"*" – discredited (IMA/CNMNC status). **"?" – questionable/doubtful (IMA/CNMNC status). *Nickel–Strunz code scheme: NN.XY.##x **NN: Nickel–Strunz mineral class number **X: Nickel–Strunz mineral division letter **Y: Nickel–Strunz mineral family letter **##x: Nickel–Strunz mineral/group number, x add-on letter Class: organic compounds * 10.A Salts of organic acids ** 10.AA Formates, Acetates, etc.: 05 formicaite, 10 dashkovaite, 20 acetamide, 25 calclacite, 30 paceite, 35 hoganite ** 10.AB Oxalates: 05 humboldtine, 05 lindbergite; 10 glushinskite, 15 moolooite, 20 stepanovite, 25 minguzzite, 30 wheatleyite, 35 zhemchuzhnikovite, 40 weddellite, 45 whewellite, 50 caoxite, 55 oxammite, 60 natroxalate, 65 coskrenite-(Ce), 70 levinsonite-(Y), 75 zugshunstite-(Ce), 80 novgorodovaite ** 10.AC Benzene Salts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compounds
In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, hydrogen cyanide), are not classified as organic compounds and are considered inorganic. Other than those just named, little consensus exists among chemists on precisely which carbon-containing compounds are excluded, making any rigorous definition of an organic compound elusive. Although organic compounds make up only a small percentage of Earth's crust, they are of central importance because all known life is based on organic compounds. Living thin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whewellite
Whewellite is a mineral, hydrated calcium oxalate, formula Ca C2 O4· H2O. Because of its organic content it is thought to have an indirect biological origin; this hypothesis is supported by its presence in coal and sedimentary nodules. However, it has also been found in hydrothermal deposits where a biological source appears improbable. For this reason, it may be classed as a true mineral. Whewellite, or at least crystalline calcium oxalate, does also arise from biological sources. Small crystals or flakes of it are sometimes found on the surfaces of some cacti, and kidney stones frequently have the same composition. Whewellite was named after William Whewell (1794–1866), an English polymath, naturalist and scientist, professor of moral philosophy at Cambridge and inventor of the system of crystallographic indexing. Heat decomposition Whewellite is used as a thermogravimetric analysis standard due to its well-known decomposition temperatures and products. See also * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fichtelite
Fichtelite is a rare white mineral found in fossilized wood from Bavaria. It crystallizes in the monoclinic crystal system. It is a cyclic hydrocarbon: dimethyl-isopropyl-perhydrophenanthrene, C19H34. It is very soft with a Mohs hardness of 1, the same as talc. Its specific gravity is very low at 1.032, just slightly denser than water. It was first described in 1841 and named for the location, Fichtelgebirge, Bavaria, Germany. It has been reported from fossilized pine wood from a peat bog and in organic-rich modern marine sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand an ...s. References Organic minerals Diterpenes Monoclinic minerals Minerals in space group 4 Phenanthrenes Minerals described in 1841 {{Mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earlandite
Earlandite, a3(C6H5O7)2(H2O)2·2H2O, is the mineral form of calcium citrate tetrahydrate. It was first reported in 1936 and named after the English microscopist and oceanographer Arthur Earland FRSE. Earlandite occurs as warty fine-grained nodules ca. 1 mm in size in bottom sediments of the Weddell Sea, off Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest contine .... Its crystal symmetry was first assigned as orthorhombic, then as monoclinic, and finally as triclinic. References {{Reflist, refs= Bibliography *Palache, P.; Berman H.; Frondel, C. (1960). "''Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)"'' John Wiley and Sons, Inc., New York, pp. 1105-1106. Calcium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mellite
Mellite, also called honeystone, is an unusual mineral being also an organic chemical. It is chemically identified as an aluminium salt of mellitic acid, and specifically as aluminium benzene hexacarboxylate hydrate, with the chemical formula Al2C6(COO)6·16H2O.http://webmineral.com/data/Mellite.shtml Webmineral data It is a translucent honey-coloured crystal which can be polished and faceted to form striking gemstones. It crystallizes in the tetragonal system and occurs both in good crystals and as formless masses. It is soft with a Mohs hardness of 2 to 2.5 and has a low specific gravity of 1.6.http://rruff.geo.arizona.edu/doclib/hom/mellite.pdf Handbook of Mineralogy It was discovered originally in 1789 at Artern in Thuringia, Germany. It has subsequently also been found in Russia, Austria, the Czech Republic, and Hungary. It was named from the Greek ''meli'' "honey", in allusion to its color. It is found associated with lignite and is assumed to be formed from plant materia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
