 | | Journal (article/letter/editorial) | | The fine-grained rocks of this deposit contain a treasure of rare, if microscopic, man ganese minerals...three new species. The Bald Knob Manganese Deposit ALLEGHANY COUNTY, NORTH CAROLINA W I L L I A M B . SIMMONS...was written, by request, for the March-April North Carolina issue. However, due to space limitations publication...N O B M A N G A N E S E D E P O S I T is one of North Carolina's most unusual and interesting deposits...This inconspicuous little prospect in western North Carolina has been the source of three new minerals and |  | | Journal (article/letter/editorial) | | pyroxenoidsfrom the manganesedeposit near Bald Knob, North Carolina' Gnnv A. WrNrBn,2 ERrc J. ESSENEeNo Doxero...from a metamorphosedmanganesedepositat Bald Knob, North Carolina, yield estimatesof temperaturesand local...Mn-Ca carbonatesdemonstratethat they span the rhodochrosite-kutnahorite solvus without a break, suggesting...theseP-Tconditions. The assemblage rhodonite/pyroxmangite-rhodochrosite-quartz requires water-rich fluids during meta-...(CoSr), alabandite (MnS), and pyrophanite (MnTiOr) at Bald Krob require a relatively reduced and sulfidizing |  | | Journal (issue) | | 157 by J. Strobbe Manganese minerals of Bald Knob, North Carolina 167 by W. B. Simmons, Jr., D. R. Peacor...your men tion of the first pocket of fine rhodochrosite from Alma, which was divided between Mr. H art...found with vuagnatite at Red Mountain, Mendocino County, California (Pabst et al> 1977), has been determined...mcguinnessite spherules from Red M ountain, Mendocino County, California, were analyzed with an ARL EMX- SM...Stanislaus County, California (Bodenlos, 1950), and malachite from Bisbee, Cochise County, Arizona. Other |  | | Journal (article/letter/editorial) | | pages 951-959,1963 Mn'humites from Bald Knob, North Carolina: mineralogy and phaseequilibriat G. A...sonolitehave beenfound in the Bald Knob manganese deposit of North Carolina. These mineralsare the manganeseanaloguesof...stabilizeone manganese humiterelativeto another.The Bald Knob humitescoexistwith rhodonitesand manganese carbonates...formation. Introduction The Bald Knob manganese depositin AlleghanyCounty, North Carolina has been shown by Simmons...experimentaldata and thermodynamic calculations. The deposit is characterized by both silica-rich and carbonate-richbulk |  | | Journal (volume) | | 2013.18G.M.1. BACK COVER: Bob King admiring a fine North Pennine fluorite at the British Mineral and Gem...Hemimorphite replacements of rugose corals from Swaledale, North Yorkshire Brian Young 17-19 PAPERS ‘Cellular’...Zircon pyroxenite from Upper Badcall, Sutherland, North-west Scotland Andy Moffat and Roy E. Starkey 64-67...contributions on aspects of the mineralogy of the North Pennine Orefield. Then, following Frank’s review...‘black blobs’ in Leicestershire, the focus shifts to North Wales with articles on the complex and intriguing |  | | Journal (article/letter/editorial) | | amphibolite facies [1]. Moreover, hausmannite–rhodochrosite–rhodonite and hausmannite–rhodonite ores were...relations of the hausmannite with rhodonite and rhodochrosite as reaction. Except these two examples, hausmannite...and they are always separated by tephroite, rhodochrosite, or other minerals [4, 15, 19, 20, and others]...silicates of bivalent Mn; quartz; and, often, rhodochrosite. As follows from the diagram, hausmannite and...tephroite, other silicates of Mn2+, calcite, rhodochrosite, and hausmannite and/or manganosite. The coexistence |  | | Journal (article/letter/editorial) | | them. One exception is the world-class manganese deposit of Nsuta with reserves of 5 million tonnes of oxide...manganese carbonate and silicate rocks containing rhodochrosite, spessartine, and rhodonite. A manganiferous...Nangodi and Lawra belts, and of the Nsuta manganese deposit. Early Proterozoic (Birimian) rocks of Ghana are...In Ghana, six parallel greenstone belts trending north to northeast are recognized. The Nangodi belt in...manganese-rich banded iron formation of the Cuyuna North range, Minnesota (McSwiggen et al., 1994), and three |  | | Book (edition) | | OX5 1 GB, UK 225 Wyman Street, Waltham, MA 02451, USA Copyright © 2015, 2008 Elsevier B.V. All rights reserved...gangue mineral may be considered as waste in one deposit and as ore mineral in another (e.g., hedenbergite)...particular sample derives from the stockwork of such a deposit, it will normally contain amorphous silica/opal...in modern hydrothermal equivalents (e.g., JADE deposit, Okinawa Trough, Japan). Thus, metasomatic/metamorphic...mineral inventory available elsewhere. Further deposit descriptions originated from: binn.strahlen.org |
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