Malovodnaya raznovidnost' shuyskita iz Saranovskogo khromitovogo rudnika, Ural  [Small hydrous variety of shuiskite from Saranovskiy chromite mine, Urals]

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Alternate Title:Small hydrous variety of shuiskite from Saranovskiy chromite mine, Urals
Authors:Ivanov, O. K.; Kaynov, V. I.; Malinovskiy, Yu. A.
Author Affiliations:Primary:
PGO Uralgeologiya, Ural. Geol.-S"yemochnaya Eksped., Sverdlovsk, USSR
Gorn. Inst., USSR
Akad. Nauk SSSR, Inst. Kristallogr., USSR
Volume Title:Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva
Source:Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 114(1), p.49-55. Publisher: Izdatel'stvo Nauka Leningradskoye Otdeleniye, St. Petersburg, USSR. ISSN: 0044-1805
Publication Date:1985
Note:In Russian. 6 refs.; illus. incl. 3 tables
Summary:Shuiskite occurs in association with uvarovite and kammererite in calcite veins in chromitites of the Saranov chromite deposit, in a small layered, serpentinized dunite-harzburgite massif enclosed in Wendian greenschists. The shuiskite has an acicular habit with well-developed side faces and narrow edge faces; it is violet, with a greyish-green streak and vitreous lustre; H. approx 6, D 3.32 g/cm3; strongly pleochroic, alpha (violet) 1.755-1.772, beta (yellowish green) 1.775-1.795, gamma (violet) 1.781-1.810, gamma :c 3.5-5.9°, 2Valpha 40-50°; a 8.780, b 5.963, c 19.01 A, beta 98.07°. The DTA and TG curves show an exothermic effect at 890-900°C, with a corresponding weight loss of 2.3%, and a weak endothermic effect at 275°C. These curves, together with IR spectra and chemical analysis (SiO2 33.57, TiO2 0.42, Al2O3 8.19, Cr2O3 28.64, Fe2O3 1.57, MnO tr., MgO 5.10, CaO 18.25, Na2O 0.21, K2O 0.06, H2O+ 3.77 = 99.78) show a deficiency of H2O and Ca compared with typical shuiskite. [R.A.H.]
Subjects:Chain silicates; Chemical composition; Chlorite group; Chromite; Clinochlore; Diaspore; Differentiation; Fractional crystallization; Gabbros; Garnet group; Igneous rocks; Magmas; Mineral composition; Mineralogy; Minerals; Nesosilicates; Orthosilicates; Oxides; Plutonic rocks; Pumpellyite; Pumpellyite group; Pyroxene group; Sheet silicates; Silicates; Sorosilicates; Temperature; Titanite; Titanite group; Ultramafic composition; Uvarovite; Central Urals; Commonwealth of Independent States; Russian Federation; Urals; USSR; Amesite; Corundophillite; Igneous processes; Russian Republic; Saranovskiy chromite mine; Sheridanite; Shuiskite
Coordinates:N530000 N600000 E0623000 E0563000
Abstract Numbers:86M/0807
Record ID:1985057869
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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