Pyroxmangite
5+1⁄2 – 6Luster vitreous, pearly Streak colorless Diaphaneity transparent, translucent Specific gravity 3.8 Birefringence δ=0.018 Other characteristics morphology: tabular crystals, granular massive, grainy References [2][3][4]
Pyroxmangite has the general chemical formula of MnSiO3.[5] It is the high-pressure, low-temperature dimorph of rhodonite.[2]
It was first described in 1913 and named for the mineral group, pyroxenes, and is known as the manganese member.[6] It forms a series with pyroxferroite.
Pyroxmangite occurs in metamorphosed ore deposits rich in manganese. Associated minerals include spessartine, tephroite, alleghanyite, hausmannite, pyrophanite, alabandite, rhodonite and rhodochrosite.[4]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b Ralph, Jolyon, and Ida Chao. "Pyroxmangite: Pyroxmangite Mineral Information and Data." MinDat.org
- ^ Barthelmy, David. "The Mineral Pyroxmangite." minerals.net
- ^ a b Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., eds. (1990). "Pyroxmangite". Handbook of Mineralogy (PDF). Vol. II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209716. Retrieved December 5, 2011.
- ^ Pinckney, Linda R, and Charles W Burnham. "High-Temperature crystal structure of pyroxmangite." American Mineralogist 73 (1988): 809–817. GeoScienceWorld. Web. 13 September 2010.
- ^ Ford, W.E. & Bradley, W.M. (1913). "Pyroxmangite, a new member of the pyroxene group and its alteration product, skemmatite". American Journal of Science. 36 (212): 169–174. Bibcode:1913AmJS...36..169F. doi:10.2475/ajs.s4-36.212.169.
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