A titanium and iron-containing mineral found as black rhombohedral crystals.
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| 释义 | the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > oxides of titanium, tantalum, nickel, or rare earths > others (30) crichtonite1813 A titanium and iron-containing mineral found as black rhombohedral crystals. polymignite1826 A mineral occurring as prismatic black crystals that is a metamict oxide of calcium, zirconium, and several other metals and has been regarded as… warwickite1838 A borotitanate of magnesium and iron in dark-brown acicular crystals. samarskite1849 A complex niobate and tantalate of yttrium, uranium, and iron, with small quantities of other metals including lanthanides, which is found as… adelpholite1859 A mineral containing iron, manganese, niobium, and other elements, subsequently identified with samarskite. guarinite1859 Silicotitanate of calcium, found in small yellowish crystals. hielmite1861 A black stanno-tantalate of iron and other bases, found as a massive mineral. tapiolite1868 ‘Columbo-tantalate of iron, resembling tantalite, but containing no manganese’ (Chester). sipylite1877 (See quots.) koppite1880 Columbate of calcium, sodium, and the cerium metals, found in transparent brown crystals. stibiotantalite1893 an oxide of antimony and tantalum, SbTaO4, occurring as transparent brown or yellowish orthorhombic crystals in which niobium replaces some of… lewisite1895 An antimonate and titanate of calcium, iron, and sodium, (Ca,Fe,Na)2(Sb,Ti)2O7, which is found as small yellow to yellowish brown octahedral… mossite1898 A mineral originally regarded as a niobium-rich analogue of tapiolite (esp. as the niobium-rich endmember of a series with tapiolite), and later… neotantalite1903 A mineral found as yellow octahedra which was formerly thought to be dimorphous with tantalite but is now considered to be a variety of microlite. priorite1907 A rare mineral of the orthorhombic crystal system consisting of an oxide and hydroxide of niobium, titanium, and yttrium (with traces of several… arizonite1909 A titanate of iron found in Arizona. betafite1912 A niobate and titanate of uranium, etc. ampangabeite1913 A mineral containing niobium, tantalum, and other metals, later identified as an altered form of samarskite. ishikawaite1922 A black oxide of various metals, perhaps (U, Fe, Yt, Ce) (Nb, Ta)O4. tanteuxenite1928 A titanotantalate of yttrium, Y(Ta, Ti)2O6, found as brownish or black, tabular or prismatic, orthorhombic crystals. thoreaulite1934 A monoclinic oxide of tin and tantalum, SnTa2O6, found as rough brown prismatic crystals that are transparent in thin splinters. simpsonite1937 An aluminium-containing mineral occurring as colourless, yellow, or light-brown crystals. priderite1951 A mineral of the tetragonal crystal system which consists of a mixed oxide of potassium, barium, titanium, and iron, and occurs as black… irinite1955 An oxide-hydroxide of sodium, cerium, thorium, titanium, and niobium occurring as red-brown crystals in the Khibiny Massif in norther Russia, and… obruchevite1955 A mineral containing yttrium and uranium, originally regarded as a member of the pyrochlore group but later shown to consist of two different species… lueshite1961 A black orthorhombic niobate of sodium, NaNbO3. pseudo-ixiolite1963 a mineral similar to ixiolite but yielding columbite rather than wodginite on heating, now regarded as a form of columbite with a disordered crystal… wodginite1963 A rare mineral consisting of an oxide of tantalum and other metals, typically occurring as brown or black grains or prismatic crystals. pseudorutile1966 a black or dark grey mineral which is a common alteration product of ilmenite occurring as thin plates and as intergrowths with ilmenite and rutile. armalcolite1970 A dark grey, titanium-rich mineral discovered in lunar rock samples and subsequently found (though rarely) in terrestrial rocks. |
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