bétafite — ● bétafite nom féminin (de Betafo, nom propre) Niobotantalate d uranium complexe, cubique, que l on trouve à Madagascar … Encyclopédie Universelle
betafite — noun A radioactive mineral in the pyrochlore group, having chemical formula (Ca,U)(Ti,Nb,Ta)O(OH) … Wiktionary
betafite — bet·a·fite … English syllables
betafite — ˈbed.əˌfīt noun ( s) Etymology: French, from Betafo, Madagascar, its locality + French ite : a mineral consisting of an oxide of niobium, titanium, and uranium occurring as greenish black isometric crystals near Betafo, Madagascar … Useful english dictionary
Betafit — Betafite aus der Typlokalität Betafo, Madagaskar Chemische Formel (Ca,U)2(Ti,Nb,Ta)2(O,OH)7 Mineralklasse Oxide, Hydroxide 4.DH.15 (8. Auflage: IV/C.16 … Deutsch Wikipedia
List of minerals (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association (IMA) is the international group that recognises new minerals and new mineral names. However, minerals discovered before 1959 did not… … Wikipedia
List of minerals A-B (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… … Wikipedia
Oxide minerals — Oxide mineral exhibit at the Museum of Geology in South Dakota The oxide mineral class includes those minerals in which the oxide anion (O2 ) is bonded to one or more metal ions. The hydroxide bearing minerals are typically included in the oxide… … Wikipedia
Rutile — Wine red rutile crystals from Binn Valley, Switzerland (Size: 2.0 x 1.6 x 0.8 cm) General Category Oxide minerals … Wikipedia
Ilmenite — from Miask, Ilmen Mts, Chelyabinsk Oblast , Southern Urals, Urals Region, Russia. 4.5 x 4.3 x 1.5 cm General Category Oxide mineral … Wikipedia
