cerium apatite
1Apatite — Catégorie VIII : phosphates, arséniates, vanadates[1] Apatite Québec (Xl 32cm) …
2igneous 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 …
3rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
4Liste de composés inorganiques C — Sommaire 1 Carbone 2 Calcium 3 Cadmium 4 Cérium 5 …
5Liste des composés inorganiques C — Liste de composés inorganiques C Sommaire 1 Carbone 2 Calcium 3 Cadmium 4 Cérium 5 …
6Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
7Mohs scale of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… …
8Phosphorus — This article is about the chemical element. For other uses, see Phosphorus (disambiguation). silicon ← phosphorus → sulfur …
9Terre rare — Terres rares   1 2   3 4 5 6 7 8 9 …
10Terres rares —   1 2   3 4 5 6 7 8 9 …
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