Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Synthesis, Chemical formulas, X-ray and optical studies of green basic 3 Valence H3O+Cr3(SO4)2(OH)6, chromium sulphate Agility with Related Structure to Alunite-Yarosite

Document Type : Original Research Paper

Author
Department of Geology, University of Shahid Bahonar, Kerman, Iran
Abstract
The green basic 3 Valence H3O+Cr3(SO4)2(OH)6, is a hydrated sulphate of chromium related to Alunite - Yarosite groups. In this research, H3O+Cr3(SO4)2(OH)6 was prepared and the resulted crystal was characterized = 7/241 A, through chemical analysis and X-ray methods. The crystal system is hexagonal with parameters of C o= 17/073 A, A o= 7/241 A. The principal X-rays of powder diagram are: 5/671 (62), 5/029(100), 3/073(93), 3/043(96), 1/805(46) A
Subjects

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