Romanèchite ((Ba,H2O)2(Mn4+,Mn3+)5O10) is the primary constituent of psilomelane, which is a mixture of minerals. Most psilomelane is not pure romanechite, so it is incorrect to consider them synonyms. Romanèchite is a valuable ore of manganese, which is used in steelmaking and sodium battery production.[6] It has a monocliniccrystal structure, a hardness of 6 and a specific gravity of 4.7–5. Romanèchite's structure consists of 2 × 3 tunnels formed by MnO6 octahedra.[5][7]
Bicolor (left) and tricolor (right) X-ray fluorescence maps of the distribution of Mn, Fe, and Ba in a ferromanganese nodule from Lake Baikal. Size = 5 mm (H) × 3 mm (V).[9]
^Harlow G, Peters J, Prinz M (1977). "Oxides and Htdroxides.". Simon & Schuster's Guide to Rocks and Minerals. New York: Simon & Schuster.
^ abTurner S and Post JE (1988) American Mineralogist 73: 1155–1161
^Li JY, Wu XL, Zhang XH, Lü HY, Wang G, Guo JZ, et al. (October 2015). "Romanechite-structured Na(0.31)MnO(1.9) nanofibers as high-performance cathode material for a sodium-ion battery". Chemical Communications. 51 (80): 14848–51. doi:10.1039/C5CC05739F. PMID 26344149.
^Post JE (March 1999). "Manganese oxide minerals: crystal structures and economic and environmental significance". Proceedings of the National Academy of Sciences of the United States of America. 96 (7): 3447–54. Bibcode:1999PNAS...96.3447P. doi:10.1073/pnas.96.7.3447. PMC34287. PMID 10097056.
^Carmichael SK, Doctor DH, Wilson CG, Feierstein J, McAleer RJ (2017-09-01). "New insight into the origin of manganese oxide ore deposits in the Appalachian Valley and Ridge of northeastern Tennessee and northern Virginia, USA". GSA Bulletin. 129 (9–10): 1158–1180. doi:10.1130/B31682.1. ISSN 0016-7606.
^ abManceau A, Kersten M, Marcus MA, Geoffroy N. and Granina L (2007) "Ba and Ni speciation in a nodule of binary Mn oxide phase composition from Lake Baikal". Geochimica et Cosmochimica Acta, 71: 1967–1981. doi:10.1016/j.gca.2007.02.007
January 01, 1970
romanèchite, 5o10, primary, constituent, psilomelane, which, mixture, minerals, most, psilomelane, pure, romanechite, incorrect, consider, them, synonyms, valuable, manganese, which, used, steelmaking, sodium, battery, production, monoclinic, crystal, structur. Romanechite Ba H2O 2 Mn4 Mn3 5O10 is the primary constituent of psilomelane which is a mixture of minerals Most psilomelane is not pure romanechite so it is incorrect to consider them synonyms Romanechite is a valuable ore of manganese which is used in steelmaking and sodium battery production 6 It has a monoclinic crystal structure a hardness of 6 and a specific gravity of 4 7 5 Romanechite s structure consists of 2 3 tunnels formed by MnO6 octahedra 5 7 RomanechiteRomanechite from the Marquette County Michigan US GeneralCategoryOxide mineralsFormula repeating unit Ba H2O 2 Mn4 Mn3 5O10IMA symbolRmn 1 Strunz classification4 DK 10Crystal systemMonoclinicCrystal classPrismatic 2 m same H M symbol Space groupC2 mIdentificationMohs scale hardness6 6 5LusterSubmetallicStreakBlue blackReferences 2 3 4 Polyhedral representation of the 2 x 3 tunnel structure of romanechite The red atoms represent Ba and H2O 5 It is commonly associated with hematite barite pyrolusite quartz and other manganese oxide minerals It has been found in France Germany England Brazil Russia India and various parts of the United States including Arizona Virginia Tennessee and Michigan and sites throughout the Appalachian Valley and Ridge 8 It occurs also in ferromanganese nodules from Lake Baikal 9 Bicolor left and tricolor right X ray fluorescence maps of the distribution of Mn Fe and Ba in a ferromanganese nodule from Lake Baikal Size 5 mm H 3 mm V 9 References edit 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 Romanechite Webmineral com Romanechite Mindat org Harlow G Peters J Prinz M 1977 Oxides and Htdroxides Simon amp Schuster s Guide to Rocks and Minerals New York Simon amp Schuster a b Turner S and Post JE 1988 American Mineralogist 73 1155 1161 Li JY Wu XL Zhang XH Lu HY Wang G Guo JZ et al October 2015 Romanechite structured Na 0 31 MnO 1 9 nanofibers as high performance cathode material for a sodium ion battery Chemical Communications 51 80 14848 51 doi 10 1039 C5CC05739F PMID 26344149 Post JE March 1999 Manganese oxide minerals crystal structures and economic and environmental significance Proceedings of the National Academy of Sciences of the United States of America 96 7 3447 54 Bibcode 1999PNAS 96 3447P doi 10 1073 pnas 96 7 3447 PMC 34287 PMID 10097056 Carmichael SK Doctor DH Wilson CG Feierstein J McAleer RJ 2017 09 01 New insight into the origin of manganese oxide ore deposits in the Appalachian Valley and Ridge of northeastern Tennessee and northern Virginia USA GSA Bulletin 129 9 10 1158 1180 doi 10 1130 B31682 1 ISSN 0016 7606 a b Manceau A Kersten M Marcus MA Geoffroy N and Granina L 2007 Ba and Ni speciation in a nodule of binary Mn oxide phase composition from Lake Baikal Geochimica et Cosmochimica Acta 71 1967 1981 doi 10 1016 j gca 2007 02 007 Retrieved from https en wikipedia org w index php title Romanechite amp oldid 1194643664, wikipedia, wiki, book, books, library,
