Crystal chemistry of type paulkerrite and establishment of the paulkerrite group nomenclature

• Published in: European journal of mineralogy (Stuttgart) Vol. 35; no. 6; pp. 909 - 919
• Main Authors: Grey, Ian E., Boer, Stephanie, MacRae, Colin M., Wilson, Nicholas C., Mumme, William G., Bosi, Ferdinando
• Format: Journal Article
• Language: English
• Published: Göttingen Copernicus GmbH 01.11.2023; Copernicus Publications
• Subjects: Aluminum; Chemical analysis; Chemical properties; Crystal structure; Crystals; Electron probes; Empirical analysis; Identification and classification; Iron; Magnesium; Manganese; Mineralogical research; Minerals; Nomenclatures; Oxidation; Single crystals; Structural analysis; Structure; Titanium; Unit cell; Zoning; Germany; United States > US; Arizona

A single-crystal structure determination and refinement has been conducted for the type specimen of paulkerrite. The structure analysis showed that the mineral has monoclinic symmetry, space group P21/c, not orthorhombic, Pbca, as originally reported. The unit-cell parameters are a=10.569(2), b=20.5...