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Rareearth element Wikipedia
A rareearth element (REE) or rareearth metal (REM), as defined by the International Union of Pure and Applied Chemistry, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium. Scandium and yttrium are considered rareearth elements because they tend to occur in the same ore deposits as the lanthanides and ...
WhatsAppPhlogopite: Mineral information, data and localities.
Mica Group. BiotitePhlogopite Series. The hydroxyl analogue of Fluorophlogopite and the magnesium analogue of, generally the micas on the Phlogopite end (magnesium end) of the BiotitePhlogopite Series, including Phlogopite, Fluorophlogopite, Eastonite, and Hendricksite. A widespread member of the mica group occurring especially in crystalline, dolomitic marbles associated ...
An Overview of the 2014 GIA Brazil Expedition | Research ...
An Overview of the 2014 GIA Brazil Expedition. Duncan Pay, Andy Lucas, Pedro Padua, and Shane Mcclure. February 13, 2015