	Roy, Supriya, Purkait, P. K. (1968) Mineralogy and genesis of the metamorphosed manganese silicate rocks (gondite) of Gowari Wadhona, Madhya Pradesh, India. Contributions to Mineralogy and Petrology, 20 (1) 86-114 doi:10.1007/bf00371068	Journal (article/letter/editorial)
	Manganese Silicate Rocks (Gondite) of Gowari Wadhona, Madhya Pradesh, India SUP~IYA RoY and P . K . PURKAIT...Geological Sciences, Jadavpur University, Calcutta-32, India Received July 8, 1968 Abstract. Manganese silicate...Group of Precambrian age in India. The manganese silicate rocks of Gowari Wadhona occupy the westernmost flank...concluded that the manganese silicate rocks of Gowari Wadhona were originally l~id down as sediments comprising...metasedimentary sequence of the Precambrian Sausar Group of India. The Sausar Group of rocks are exposed along a 130
	Roy, Supriya, Purkait, P. K. (1965) Stability relations of manganese oxide minerals in metamorphic orebodies corresponding to sillimanite grade in Gowari Wadhona Mine area, Chhindwara District, Madhya Pradesh, India. Economic Geology, 60 (3) 601-613 doi:10.2113/gsecongeo.60.3.601	Journal (article/letter/editorial)
	SILLIMANITE MINE OF MANGANESE OREBODIES GRADE IN OXIDE MINERALS CORRESPONDING GOWARI TO WADHONA AREA...AREA, CHHINDWARA DISTRICT, MADHYA PRADESH, INDIA SUPRIYA ROY AND P. K. PURKAIT ABSTRACT The paper...of the manganeseorebodiesat Gowari Wadhona mine area, Madhya Pradesh,India, that have suffered region...Archeanage), occurat the Gowari Wadhonaminearea, ChhindwaraDistrict, Madhya Pradesh,India. The area is situatedto...the extensive beltof metamorphic manganese oresof Madhya Pradeshand Maharashtrain its westernextremity(Fig
	*Roy, Supriya (1968) Mineralogy of the different genetic types of manganese deposits. Economic Geology, 63 (7) 760-786 doi:10.2113/gsecongeo.63.7.760*	Journal (article/letter/editorial)
	the uppermostparts, by psilomelane,cryptomelane,pyrolusite,corohaditc, etc. (mainly Mn4+) in which psilomelaneis...carbonates(rhodochrosite), or higher oxides (pyrolusite, cryptomelane,manganite, psilomelaneetc.), the...identificationsby X-ray powder 3, superficialdeposits. The division 3 in Park's analyses. A few, however,have dependedon...y)deposits (Japanesedeposits). Similarly, the division of Hypogeneveinsconsisting of manganese minerals...other metals,have resented by silicate-oxide (India), sulfide-carbonate-been describedfrom different
	*(1972) Topographical Index. Mineralogical Magazine, 38 (300) 1002-1004 doi:10.1180/minmag.1972.038.300.20*	Journal (article/letter/editorial)
	Glenmacnass, Co. Wicklow, sillimanite, 763 Rosses district, Donegal, beryl, 328 Three Rock Mtn, San@ford...yttrotungstite, raspite, stolzite, 261 Bau mining district, Sarawak, antimonian idoerase, 894 Tapah, Kinta...margarite, staurolite, IO6 India Bhopal, levyne, 527 Ghoriajor, Sundargarh District, Orissa, blanfordite,... Gujarat, blandfordite, 32 Kacharwali, Nagpur District, Maharashtra, blanfordite, 32 Khetri copper belt... South Arcot District, Madras, ferroan gahnite, 528 Maruturu Anakapatle, Andhra Pradesh, sahlite, 377
	Roy, Supriya (1959) Mineralogy and texture of the manganese ore bodies of Dongari Buzurg, Bhandara District, Bombay state, India, with a note on their genesis. Economic Geology, 54 (8) 1556-1574 doi:10.2113/gsecongeo.54.8.1556	Journal (article/letter/editorial)
	OF THE MANGANESE ORE BUZURG, BHANDARA DISTRICT, INDIA, WITH A NOTE ON THEIR GENESIS SUPRIYA ROY...is an importantman ganeseore-producing area in India, wherethe ore bodiesare broadlytwo types: 1) Massiveore...as:emblages:1) Braunite-jacobsite-manganite-vredenburgite-pyrolusite-cryptomelane (+ psilomelane)assemblage for the...massive gonditic ores, where cryptomelaneand some pyrolusite are secondaryoxidationproducts:2) psilomelan...needlestypicalof colloidaldepositionin openspace. Someof pyrolusite is secondaryin these ores. In the mixed ore of
	Roy, Supriya (1965) Comparative study of the metamorphosed manganese protores of the world; the problem of the nomenclature of the gondites and kodurites. Economic Geology, 60 (6) 1238-1260 doi:10.2113/gsecongeo.60.6.1238	Journal (article/letter/editorial)
	rigid definitions,the depositsof Madhya Pradesh-Maharashtrabelt, India, Otjosondu, S.W. Africa and Mount... sulfides. The metamorphosed formationsat Nsuta mine area, Ghana, Ti•r•, French West Africa, SimsiS,...around Kodur, Srikakulam District and Goldongri, Panch Mahal District, India, are type kodurites,though...metamorphosed manganiferousformationswas donein India, a comparisonof the Indian formations 1238 METAMORPHIC...ions. METAMORPHOSED MANGANESE FORMATIONS OF INDIA Fermor (10) recognized two differenttypesof metamorphosed
	*(1972) Alphabetical Index. Mineralogical Magazine, 38 (300) 1005-1015 doi:10.1180/minmag.1972.038.300.21*	Journal (article/letter/editorial)
	Aegirine-augite, Scotland, anal., 819; manganoan, India, anal., opt., X-ray, paragenesis, 32 Agrinierite...ASWATHANARAYANA(U.), see RAO (V. DIVAKARA), 678 Auburn mine, Minnesota, stilpnomelane, 693 AUCOTT(J. W.), see...hour-glass structure in, interpretation of, 251; India, with Ca-rich pigeonite, 975; Greenland, anal.,...Amapa, Brazil, pyrolusite pseudomorphous after BABU (S. K.), Chlorapatite from India, 972 manganite,...VANCE (E. R.), 605, manganese ores, 235 Bau mining district, Sarawak, Malaysia, anti721 monian idocrase, 894
	*Lippolt, H. J., Hautmann, S. (1995) 40Ar/39Ar ages of Precambrian manganese ore minerals from Sweden, India and Morocco. Mineralium Deposita, 30 (3) 246-256 doi:10.1007/bf00196360*	Journal (article/letter/editorial)
	Precambrian manganese ore minerals from Sweden, India and Morocco H.J. Lippolt, S. Hautmann Laboratorium...Precambrian manganese deposits (Ultevis/Sweden, Sitapar/India, Bachkoun/Morocco). Samples from the metamorphic...environment, namely U1tevis (Sweden), Sitapar (India), and Bachkoun (Morocco). The samples have been...the samples analysed (Frenzel 1980). The Sitapar mine area reveals a close genetic relationship between...subunit of the Precambrian Sausar Group of central India (Gupta 1977; Naqvi and Rogers 1987). The protores
	Altherr, Rainer, Soder, Christian, Panienka, Sandra, Peters, Daniel, Meyer, Hans-Peter (2013) Pink manganian phengite in a high P/T meta-conglomerate from northern Syros (Cyclades, Greece) Contributions to Mineralogy and Petrology, 166 (5) 1323-1334 doi:10.1007/s00410-013-0929-7	Journal (article/letter/editorial)
	known examples. The first one is from the Praborna mine near St. Marcel, 123 Contrib Mineral Petrol ...DfO2 = ? 7, while the oxidation of braunite to pyrolusite (Mn4?O2) and quartz will occur at DfO2 = ? 17...manganese silicate rocks (gondite) of Gowari Wadhona, Madhya Pradesh, India. Contrib Mineral Petrol 20:86–114
	Melcher, Frank (1995) Genesis of chemical sediments in Birimian greenstone belts: evidence from gondites and related manganese-bearing rocks from Northern Ghana. Mineralogical Magazine, 59 (395) 229-251 doi:10.1180/minmag.1995.059.395.08	Journal (article/letter/editorial)
	from a number of Precambrian shields, including India (e.g. Roy, 1968, 1973, 1981; Roy and Purkait, 1968)...Manganese minerals are present as coarse-grained pyrolusite and fine-grained aggregates of greyish minerals...indicate that they do not replace silicate minerals. Pyrolusite generally postdates cryptomelane. The compositions...minerals Cryptomelane Pyrolusite Roman6chite Goethite Lepidocrocite Cryptomelane Pyrolusite Goethite General...Ghana: Tirodite, Actinolite "l'irodite A Sausar Fm., India: -Iirodite FIG. 4. Plot of Na+Ca in M(4) vs. (Fe+Mn)/(Fe+Mn+Mg)
	Vasconcelos, Paulo M, Renne, Paul R, Brimhall, George H, Becker, Tim A (1994) Direct dating of weathering phenomena by and K-Ar analysis of supergene K-Mn oxides. Geochimica et Cosmochimica Acta, 58 (6) 1635-1665 doi:10.1016/0016-7037(94)90565-7	Journal (article/letter/editorial)
	( Azul manganese mine, IgarapC Bahia gold mine, N4E iron mine, Serra Pelada gold mine, and Sereno manganese...samples parts of the profile (Fig. 2~). N4E iron mine The Carajb banded iron formation (BIF) consists...supergene hematite fragments at a 50 m deep level of the mine for analysis. Serra Pelada gold deposit The Serra...m of the surface, and consist of hollandite, pyrolusite, and cryptomelane (Fig. 5). EXPERIMENTAL PROCEDURES...2nd) in sample C- 13. Also shown is a layer of pyrolusite crystals precipitated during the second generation
	B HN, B., OKRUSCH, M., WOERMANN, E., LEHNERT, K., HOERNES, S. (1995) Metamorphic Evolution of Neoproterozoic Manganese Formations and their Country Rocks at Otjosondu, Namibia. Journal of Petrology, 36 (2) 463-496 doi:10.1093/petrology/36.2.463	Journal (article/letter/editorial)
	weathering to form fine-grained aggregates of pyrolusite, psilomelane, haematite and chalcedony. Roper...enes' from the metamorphosed manganese deposits of India first described by Fermor (1909) and analysed by...Otjosondu (Yoshii&Maada.1975) kinojhitalita, India (this study) • (Dasgupta at !., 1989«) SiO2...sedimentary manganese formations, like those of India* (Roy, 1980; Dasgupta & Manickavasagam, 1981) and...Fermor, L. L., 1909. The manganese ore deposits of India. Contributions to Mineralogy and Petrology, 74
	*Pracejus, Bernhard - Ed.* (2014) The Ore Minerals Under the Microscope (2nd ed.) Elsevier. doi:10.1016/c2012-0-01360-9**	Book (edition)
	Sciences, Jadavpur University, Calcutta - 700 032, India TU Bergakademie Freiberg, Institute of Mineralogy...orangebrown distinctive brown to blue grey Mineral Pyrolusite Rasvumite Rickardite light yellow, brown, brilliant... Mineral Descriptions Molybdenite in Graphite; Bogala Mine, Sri Lanka 51 Copper, native Synonym(s): Cuivre...of cuprite (bluish grey); North Mine (North Broken Hill Mine; NBH Mine), Broken Hill, Yancowinna Co.,...vein in jasper (red internal reflections); Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey
	*(1982) The Development Potential of Precambrian Mineral Deposits. Pergamon Press, New York. doi:10.1016/c2013-0-06005-7*	Book
	Mineral Deposits Natural Resources and Energy Division, U.N. Department of Technical Co-operation for...Data United Nations. Natural Resources and Energy Division. The development potential of precambrian mineral...prior to the meeting and the Sludyanka phlogopite mine at Irkutsk afterwards. Precambrian Mineral Deposits...studies in beneficiation and metallurgy, design of mine and process plant, and, last but not least, the...evidence on the origin of the Shamrock v 11 N o copper mine, Rhodesia", Min. Deposits« > « 3 , pp. 298-310.
	*Augustithis, S S (1995) Atlas of the textural patterns of ore minerals and metallogenic processes. W. de Gruyter.*	Book
	shales, hornfels and granites of the Harzburg district, showed that the amount of boron decreases from...abundant in arsenopyriterich samples from Wongabah Mine, characteristically forming aggregates of fibrous...leuchtenbergite schist from Hada Budussa, Adola District, Ethiopia (described by Augustithis in 1964)....(1986) of a fresh euhedral crystal from the Kaneuchi Mine, Kyoto Prefecture, shows only slight compositional...paragenesis. Microscopic observations (from the Faraday Mine) show the structural interrelationship between uraninite
	*Bernard, Jan, Hyršl, Jaroslav (2004) Minerals and their Localities* (1st ed.) Granit, Prague.**	Book (edition)
	Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...represents the class, the second (alphabetic) a division. Often the names of generally used mineral groups...detailed using five characters: for a class, a division, a subdivision, and two numeric digits at the...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO
	*Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy* (8th ed.) Wiley-Interscience. p.1872**	Book (edition)
	Miami University, Oxford, Ohio. W. Barclay Kamb: Division of Geol. and Planetary Sci., Cal. Inst. of Tech...first consideration in generating the numbers was division into classes based on composition or, in the case...Siberia ae SS shes] TM REED eS SL China and Japan 10. India 11. South east Asia 12. Middle East 13. African...Spotsylvania Co., and Partridge mine, Orange Co., VA, and at Dahlonega, GA; Homestake mine, Lawrence Co., SD; Silver...Lake Co., Breckenridge(), Summit Co., Ground Hog mine(), Gilman Co., Silverton and Telluride, San Juan
	*Deer, W. A., Howie, R. A., Zussman, J. (1978) Rock-Forming Minerals* (2nd ed.) Vol. 2A - Single-Chain Silicates. The Geological Society, London.**	Book (volume)
	the United States of America by Halsted Press, a Division of John Wiley & Sons, Inc. New York First Edition...adopted it is not completely followed here, and the division between enstatite and bronzite, and between eulite... fissure m chromite pyroxerute, H irose mine, Tari district, Tottori Prefecture, Japan (Kitabara, 1958)...intermediate rock, Ambagamudam Pothai, Tinoevelly, India (Howie, 1955). Anal. R. A. Howie. 14 Ferrohypersthene...hyperstbene-diopside-plagioclase bomfels, Aavold Quarry, Oslo district, Norway (Muir and Tilley, 1958). Anal. J. H. Scoon
	*Liebscher, Axel, Franz, Gerhard - Eds.* (2004) Epidotes. Reviews in Mineralogy and Geochemistry Vol. 56. Mineralogical Society of America**	Report (volume)
	Grapes 1981; Cooper 1980; Challis et al. 1995; India by Devaraju et al. 1999; Spain by Sánchez-Viscaíno...Cordier L (1803) Analyse du Minéralconnu sus le nom de Mine de Manganese violet du Piédmont, faite au Labratoire...archean barite deposit of Ghattihosahalli, Karnataka, India. Can Mineral 37:603-617 Dollase WA (1968) Refinement...(1956) Manganiferous epidote from the Kakinomoto Mine, Kochi Prefecture. J Min Soc Japan 2: 331-346 (quoted...The piemontite of Piedmont (Italy) Kajlidongri (India) and Marampa (Sierra Leone). Bull Comm géol Finlande