Exomorphism of jacobsite precipitates in bixbyite single crystals from the Thomas Range in Utah

• Published in: The American mineralogist Vol. 106; no. 7; pp. 1163 - 1171
• Main Authors: Peter, Johannes, Trapp, Maximilian, Lauterbach, Stefan, Gollé-Leidreiter, Philipp, Kolb, Ute, Kleebe, Hans-Joachim
• Format: Journal Article
• Language: English
• Published: Washington Mineralogical Society of America 01.07.2021; Walter de Gruyter GmbH
• Subjects: ACOM; automated analysis; bixbyite; braunite; Chemical composition; Chemical precipitation; Crystal defects; Crystal structure; Crystallites; Crystallization; Crystals; Defects; Diffraction; Electron microscopy; electron microscopy data; exomorphism; experimental studies; geologic thermometry; Growth models; High temperature; Imaging techniques; Inclusions; Iron; jacobsite; Lamellae; Manganese; Mineralogy; Mountains; Nanodiffraction; nesosilicates; nonsilicates; Orientation; orthosilicates; oxides; perovskite structure; phase diagrams; phase equilibria; Precipitates; Resolution; Shape; Silicates; Single crystals; Spinel; TEM; TEM data; Thermometers; Thomas Range; Transmission electron microscopy; United States; Utah; United States > US; Utah

Naturally occurring single crystals of bixbyite, (Fe,Mn)2O3, from the Thomas Mountain Range in Utah, U.S.A., were studied via (scanning) transmission electron microscopy (S)TEM. With up to 5 cm edge length, these mineral specimens are the largest bixbyite crystals found worldwide. Their hexahedral s...