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Alleghanyite from
Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA


Locality type:Deposit
Classification
Species:Alleghanyite
Formula:Mn52+(SiO4)2(OH)2
Comments:Alleghanyite and Mn-rich calcite occur in alternating lenses in a carbonate paragenesis. These lenses may not be more than one millimeter wide, but can be up to 15 mm wide. The individual rounded alleghanyite grains are up to 5 mm in diameter.
Habit:rounded grains
Colour:brownish pink
Confirmation
Validity:Valid - Type Locality
Associated Minerals:
Associates:Manganese-bearing Calcite
Manganhumite
Sonolite
Tephroite
Associated Minerals Based on Photo Data:
Kellyiteⓘ8 photos of Alleghanyite associated with Kellyite at this locality.
Kutnohoriteⓘ8 photos of Alleghanyite associated with Kutnohorite at this locality.
Jacobsiteⓘ5 photos of Alleghanyite associated with Jacobsite at this locality.
Calciteⓘ4 photos of Alleghanyite associated with Calcite at this locality.
Data
Mineral Data:Click here to view Alleghanyite data
Locality Data:Click here to view Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:396
Long-form Identifier:1:3:396:4
GUID (UUID V4):721df69c-e210-4bdc-85bd-9e81788875f5
References
Reference Search (possible matching items)
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)
Ne* Mn-AlMemberof the SerpentineGroupfrom Bald Knob, North Garolina,and New Dita on Grove3ite' DoNtrp...(principally kutnahorite) at the Bald Knob manganesemine, near Sparta, North Carolina. Associated minerals include...include galaxite, jacobsite, Mn-chlorite, alleghanyite, and sonolite. X-ray diffraction shows that it is...depositat Bald of amesite. The name, kellyite, is in honor of Dr. Knob, near Sparta, North Carolina, was originally...Geology and Mineralogy at The of two new minerals, alleghanyite and galaxite. We of Michigan and an active contributor
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...(CoSr), alabandite (MnS), and pyrophanite (MnTiOr) at Bald Krob require a relatively reduced and sulfidizing...manganesedeposit near Bald Knob, North Carolina, is located in Alleghany County, in the northwestregion...northwestregion of the state.Sparta,North Carolina, fies about 3 miles southwest,and Bald Knob is a half mile northwest
Journal (article/letter/editorial)
pages 951-959,1963 Mn'humites from Bald Knob, North Carolina: mineralogy and phaseequilibriat G. A...Abstract Alleghanyite,manganhumiteand sonolitehave beenfound in the Bald Knob manganese deposit of North...North Carolina. These mineralsare the manganeseanaloguesof chondrodite, humite and clinohumiterespectively...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
Journal (issue)
157 by J. Strobbe Manganese minerals of Bald Knob, North Carolina 167 by W. B. Simmons, Jr., D. R. Peacor...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...3Mcguinnessite (this study) from Red Mountain, Mendocino County, California (M g/Cu = 1.17). D(obs.) by suspension
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)
we found braunitefree rocks at the Kazagan-Tash deposit in the Southern Urals of Russia that simultaneously...rare and was reliably identified at the Otjosondu deposit in Namibia [23]. The metalliferous deposits are...minerals with each other and with sonolite, alleghanyite, hausmannite, spessartine, and some other phases...Examples of these deposits are the Bikkulovskoe deposit in the Southern Urals [32], Ir-Nimiiskoe and Shantarskoe...Hausmannite + tephroite + rhodonite (+ pyrox- Alleghanyite, ribbeite, caryopilite, pyros- [20] mangite)
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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