Grandviewite redefinition, new formula Cu.sub.3./sub.Al.sub.2./sub.(SO.sub.4./sub.)(OH).sub.10./sub.·H.sub.2./sub.O, and crystal-structure determination

0563223 - FZÚ 2023 RIV GB eng J - Journal Article
Sejkora, J. - Steciuk, Gwladys - Marquez-Zavalia, M.F. - Plášil, Jakub - Dolníček, Z.
Grandviewite redefinition, new formula Cu₃Al₂(SO₄)(OH)₁₀·H₂O, and crystal-structure determination.
Mineralogical Magazine. Roč. 86, č. 5 (2022), s. 730-742. ISSN 0026-461X. E-ISSN 1471-8022
Institutional support: RVO:68378271
Keywords : grandviewite * redefinition * Raman and infrared spectroscopy * 3D electron diffraction * crystal structure * Capillitas mine * Argentina
OECD category: Mineralogy
Impact factor: 2.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1180/mgm.2022.59

Grandviewite is redefined on the basis of a restudy of the holotype specimen from the Grandview mine, Arizona, USA, and additional specimens found in the Restauradora vein at the Capillitas mine, northwestern Argentina. Grandviewite from the Capillitas mine forms globular masses up to a couple of millimeters in diameter, formed by very thin platy to acicular lath-like crystals, greenish-pale blue in color, pleochroic (X = colorless, Y = very pale blue, Z = greenish-pale blue), with pale blue streak and silky to a satiny luster. Results of electron-microprobe study and crystal-structure determination lead to the new ideal formula Cu3Al2(SO4)(OH)10.H2O.

Permanent Link: https://hdl.handle.net/11104/0335259