Anzaite-(Ce)
Anzaite-(Ce) is a rare-earth element (REE) oxide mineral with the formula Ce4Fe2+Ti6O18(OH)2. An example of chemically related mineral is lucasite-(Ce), although it contains no iron. Cerium in anzaite-(Ce) is mainly substituted by neodymium, lanthanum, calcium and praseodymium. Titanium is substituted by niobium. Trace elements include thorium. The mineral is monoclinic, space group C2/m. Anzaite-(Ce) is hydrothermal mineral found in a carbonatite from the mineralogically prolific Kola Peninsula. The mineral name honors Anatoly N. Zaitsev, who is known for studies of carbonatites and REE.
Intro adapted from Wikipedia (CC BY-SA).
Anzaite-(Ce) is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Ce₄Fe²⁺Ti₆O₁₈(OH)₂.
It crystallizes in the monoclinic crystal system (space group C2/m).
Key properties: specific gravity 5.054; Submetallic luster.
IMA symbol Anz-Ce, IMA status: approved, named in 2013.
A late hydrothermal mineral in altered calcite-amphibole-clinopyroxene silicocarbonatite.
It is found associated with Titanite, hibschite, clinochlore, calcite, ilmenite, Ti-rich magnetite.
The mineral was named to honor Anatoly Zaitsev (b. 1963), Professor of Mineralogy at St. Petersburg State University, Russia and Scientific Associate at the Department of Earth Sciences.