Roy Supriya: Manganese-bearing silicate minerals from metamorphosed manganese formations of India : III. tirodite. In: Acta mineralogica-petrographica, (21) 2. pp. 269-273. (1974)
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Abstract
Tirodite, the yellow manganiferous amphibole, described first by DUNN & ROY [1938] from metamorphosed manganese formations at Tirodi, Madhya Pradesh, India, has been studied in detail. Earlier workers related this mineral either to richterite or to cummingtonite. Determination of optical properties, X-ray powder data and interpretation of chemical analyses of the mineral from different localities indicate that the composition of tirodite (MnO 2.84 to 13.83%) varies fairly widely within the complete chemical series between tremolite and richterite. The tirodites were found either in an alkali-rich environment in pegmatites which assimilated part of the manganese formation they cut across, or in manganese silicate rocks themselves that have been subjected to soda-metasomatism.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Acta mineralogica-petrographica |
| Date: | 1974 |
| Volume: | 21 |
| Number: | 2 |
| ISSN: | 0365-8066 |
| Page Range: | pp. 269-273 |
| Language: | English |
| Publisher: | University of Szeged, Department of Mineralogy, Geochemistry and Petrology |
| Place of Publication: | Szeged |
| Related URLs: | http://acta.bibl.u-szeged.hu/39393/ |
| Uncontrolled Keywords: | Kőzettan, Ásványtan, Földtan |
| Additional Information: | Bibliogr.: p. 272-273. ; összefoglalás angol nyelven |
| Subjects: | 01. Natural sciences 01. Natural sciences > 01.05. Earth and related environmental sciences |
| Date Deposited: | 2016. Oct. 17. 09:26 |
| Last Modified: | 2022. Jul. 22. 14:35 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/24579 |
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