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Alleghanyite

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Formula:
Mn52+(SiO4)2(OH)2
System:
Monoclinic
Colour:
Pinkish to reddish ...
Hardness:
Name:
Named in 1932 by Clarence S. Ross and Paul F. Kerr after the type locality occurrence in Alleghany County, North Carolina, USA.
Maybe a pink to red-brown fine-grained masses or rare crystals on vein fractures.

Classification of Alleghanyite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
9.AF.45

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
52.3.2b.1

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
14.17.4

14 : Silicates not Containing Aluminum
17 : Silicates of Mn
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First Recorded Occurrence of Alleghanyite

Year of Discovery:
1932
Geological Setting of First Recorded Material:
Hydrothermally deposited, in lenses in a manganese-bearing vein
Associated Minerals at First Recorded Locality:

Occurrences of Alleghanyite

Geological Setting:
in veins crosscutting franklinite ore near pegmatites in a metamorphosed stratiform Zn-Mn deposit

Physical Properties of Alleghanyite

Sub-Vitreous, Resinous, Waxy, Dull
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Pinkish to reddish brown, deep pink, grayish pink
Comment:
in thin section, pink or buff in thick plates
Streak:
Very pale pink
Hardness (Mohs):
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good to poor
Fracture:
Conchoidal, Sub-Conchoidal
Density:
3.93 - 4.02 g/cm3 (Measured)    3.96 g/cm3 (Calculated)

Crystallography of Alleghanyite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Space Group Setting:
P21/b
Cell Parameters:
a = 8.27Å, b = 4.85Å, c = 10.72Å
β = 104.64°
Ratio:
a:b:c = 1.705 : 1 : 2.21
Unit Cell Volume:
V 416.01 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals often rounded, slender; in stout plates, some longitudinally deeply striated. As fan-shaped aggregates; commonly irregular, massive.
Twinning:
On {001} , lamellar, common; also on {105} , {305} .
Comment:
Various settings reported
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.10 (100)
2.84 (70)
2.75 (40)
2.70 (40)
2.59 (40)
2.33 (50)
1.79 (60)
Comments:
ICDD 43-683; see also ICDD 39-1348

Optical Data of Alleghanyite

Type:
Biaxial (-)
RI values:
nα = 1.756 nβ = 1.780 nγ = 1.792
2V:
Measured: 72° , Calculated: 68°
Birefringence:
0.036
Max Birefringence:
δ = 0.036
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v
Optical Extinction:
X ^ a = 35°, Z = b (olivine setting). OAP perpendicular to {100}
Pleochroism:
Weak
Comments:
X brown, Y light brown, Z colorless

Chemical Properties of Alleghanyite

Formula:
Mn52+(SiO4)2(OH)2
Essential elements:
All elements listed in formula:
Analytical Data:
Soluble to a silica gel in 1:1 HCl
Common Impurities:
Ti,Al,Fe,Mg,Ca,F

Relationship of Alleghanyite to other Species

Other Members of Group:
Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2
SonoliteMn92+(SiO4)4(OH,F)2
9.AF.05SillimaniteAl2(SiO4)O
9.AF.10AndalusiteAl2(SiO4)O
9.AF.10KanonaiteMn3+Al(SiO4)O
9.AF.15KyaniteAl2(SiO4)O
9.AF.20MulliteAl4+2xSi2-2xO10-x
9.AF.20Krieselite(Al,Ga)2(GeO4)(OH)2
9.AF.23BoromulliteAl9BSi2O19
9.AF.25YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)
9.AF.30Magnesiostaurolite(Mg,Li,Fe2+)1.5-2Al9(SiO4)4O6(OH)2
9.AF.30Staurolite(Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2
9.AF.30Zincostaurolite(Zn,Li,Fe2+,Mg)1.5-2Al9(SiO4)4O6(OH)2
9.AF.35TopazAl2(SiO4)(F,OH)2
9.AF.40NorbergiteMg3(SiO4)(F,OH)2
9.AF.45Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
9.AF.45ReinhardbraunsiteCa5(SiO4)2(OH,F)2
9.AF.45KumtyubeiteCa5(SiO4)2F2
9.AF.45HydroxylchondroditeMg5(SiO4)2(OH)2
9.AF.50Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
9.AF.50Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2
9.AF.50Unnamed (Ca-analogue of Humite)Ca7(SiO4)4F2
9.AF.55ClinohumiteMg9(SiO4)4F2
9.AF.55SonoliteMn92+(SiO4)4(OH,F)2
9.AF.55HydroxylclinohumiteMg9(SiO4)4(OH)2
9.AF.60LeucophoeniciteMn72+(SiO4)3(OH)2
9.AF.65Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2
9.AF.70JerrygibbsiteMn92+(SiO4)4(OH)2
9.AF.75FranciscaniteMn62+(V5+,☐)2(SiO4)2(O,OH)6
9.AF.75ÖrebroiteMn32+(Sb5+,Fe3+)(SiO4)(O,OH)3
9.AF.75WeliniteMn62+(W6+,Mg)2(SiO4)2(O,OH)6
9.AF.80EllenbergeriteMg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10
9.AF.85Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
9.AF.85MagnesiochloritoidMgAl2(SiO4)O(OH)2
9.AF.85Ottrélite(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2
9.AF.90PoldervaartiteCaCa[SiO3(OH)](OH)
9.AF.90OlmiiteCaMn2+[SiO3(OH)](OH)
14.17.1RhodoniteMnSiO3
14.17.2TephroiteMn22+SiO4
14.17.3BrauniteMn2+Mn63+(SiO4)O8
14.17.5Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2
14.17.6LeucophoeniciteMn72+(SiO4)3(OH)2
14.17.7JerrygibbsiteMn92+(SiO4)4(OH)2
14.17.8BementiteMn7Si6O15(OH)8
14.17.9ParsettensiteK1.2Mn8(Si,Al)12O26(OH)10
14.17.10YofortieriteMn5Si8O20(OH)2 · 8-9H2O

Other Names for Alleghanyite

Name in Other Languages:
Simplified Chinese:粒硅锰矿
Spanish:Alleghanyita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alleghanyite

Reference List:
Ross, Clarence S. and Kerr, Paul F. (1932) American Mineralogist: 17: 1-15.

Zeitschrift für Kristallographie: 132: 1-18.

Internet Links for Alleghanyite

Localities for Alleghanyite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
China
 
  • Guangxi Zhuang Autonomous Region
    • Baise Prefecture
      • Jingxi Co.
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190
  • Hunan Province
    • Xiangtan Prefecture
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190
  • Shaanxi Province
    • Ankang Prefecture
      • Ziyang Co.
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190; Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    • Hanzhong Prefecture
      • Xixiang Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
      • Zhenba Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
  • Sichuan Province
    • Dazhou Prefecture
      • Wanyuan Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    • Ya'an Prefecture
      • Hanyuan Co.
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190
  • Yunnan Province
    • Dali Autonomous Prefecture
      • Heqing Co.
Yuchun Yang (1990): Geology and Prospecting 26(8), 20-23
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190
    • Wenshan Autonomous Prefecture
      • Yanshan Co.
Yang Yuchun (1996): Acta Petrologica et Mineralogica 15(2), 186-190
France
 
  • Midi-Pyrénées
    • Hautes-Pyrénées
Le Règne Minéral 47: 5-21
        • Vielle Aure
DE ASCENCAO GUEDES R., TIXADOR Y., CASTERET A. & GOUJOU JC. (2002) La mine de Coustou, Vielle-Aure, Hautes-Pyrénées. Le Règne Minéral, 47, 23-31. (in french)
Japan
 
  • Honshu Island
    • Chubu Region
      • Aichi Prefecture
        • Kita-Shidara-gun
          • Shidara-cho
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.
      • Nagano Prefecture
        • Kami-Ina-gun
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Katsu Kaneko (1956) Symposium del Manganeso, XX Congreso Geologico Internacional, Mexico D.F.
Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011).
Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011).
        • Matsumoto City
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
    • Chugoku Region
      • Yamaguchi Prefecture
        • Iwakuni City
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
Lee, D. E. (1955); Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Am Min (1955) 40:32-40
        • Kudamatsu City
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.
    • Kanto Region
      • Gunma Prefecture
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
        • Kiryuu City
Masutomi Museum specimen (Kyoto); A.Matsubara, S., & Kato (1980). Nagashimalite, Ba4 (V3+, Ti) 4 [(O, OH) 2| Cl| Si8B2O27], a new mineral from the Mogurazawa mine, Gumma prefecture, Japan. Mineralogical Journal, 10(3), 122-130.
        • Midori City
Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
University of Tokyo collection
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
      • Ibaraki Prefecture
        • Takanomine mine
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.
      • Tochigi Prefecture
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
        • Kanuma City
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.; Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese); Yoshinaga, Mayumi. "Sonolite, a new manganese silicate mineral." Mem Fac Sci Kyushu Univ Ser D Geol 14 (1963): 1-21.
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
        • Tanuma
Collection of NHM, Vienna
      • Tokyo Metropolis
        • Nishi-Tama-gun
          • Okutama-cho
Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
    • Kinki Region
      • Kyoto Prefecture
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.
        • Nantan City
Toyofumi Yoshimura, "Manganese deposits in Japan - Addendum, PartII", Science reports, Department of Geology, Kyushu University (1969)
        • Sohraku-gun
          • Wazuka-cho
Mayumi Yoshinaga (1963) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 14, 1, 1-22.
      • Mie Prefecture
        • Toba City
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
      • Shiga Prefecture
        • Ritto City
Symposium sobre yacimientos de manganeso, Tomo IV, Mexico (1956); Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
      • Wakayama Prefecture
        • Naga-gun
          • Afuzu-mura
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
    • Tohoku Region
      • Fukushima Prefecture
        • Iwaki
Mineralogical Journal Vol. 18 (1996) , No. 4 pp 155-160
      • Iwate Prefecture
        • Miyako City
Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)
        • Noda
Katsu Kaneko (1956) Symposium del Manganeso, XX Congreso Geologico Internacional, Mexico D.F.
        • Shimohei-gun
          • Yamada
Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)
  • Kyushu Region
    • Fukuoka Prefecture
Dr. Yohachiro Okamoto collection (conserved by the Geological Survey of Japan)
    • Nansei Archipelago
      • Kagoshima Prefecture
        • Amami-Oshima Island
          • Oshima-gun
            • Setouchi-cho
Toyofumi Yoshimura, "Manganese deposits in Japan - Addendum, PartII", Science reports, Department of Geology, Kyushu University (1969)
    • Saga Prefecture
      • Karatsu City (Higashi-Matsuura-gun)
        • Kyuuragi-machi
Okamoto collection (curated at the Geological Survey museum, Japan)
  • Shikoku Island
    • Kochi Prefecture
Kaneko, K. (1956) Symposium sobre yacimientos de manganeso. Vol. 4, 184 (Mexico, 1956)
      • Nagaoka-gun
Journal of Mineralogical and Petrological Sciences 103,400-406(2008)
Kyrgyzstan
 
  • Issyk-Kul'skaya Oblast
    • Inyl'chek Range
      • Muzeinyi Valley
Pautov L.A., Khvorov P.V., Ignatenko K.I. Alleganyte from rhodonite rocks of Inylchek range (the first description of alleganyte from USSR), - Novye dannye o mineralah SSSR (New data on minerals of USSR), Moscow, Nauka, 1989, p. 162-166.
Namibia
 
  • Otjozondjupa Region
    • Grootfontein District
      • Kombat
Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
Romania
 
  • Maramureș Co.
http://minerals-of-the-carpathians.eu
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Sedel'nikovo
Brusnitsyn A.I. (2000) Rhodonite deposits of Middle Ural, - S.-Peterburg Univercity press, p. 200 (in Rus.).
    • Southern Urals
      • Bashkortostan Republic (Bashkiria Republic)
        • Sibay
Brusnitsyn, A.I. (2006): Geology of Ore Deposits 48(3), 193-214.
Sweden
 
  • Dalarna
    • Hedemora
      • Garpenberg
Nysten, P. (2003): Yeatmanite and magnussonite from the Garpenberg Norra mine, Bergslagen ore province, Sweden. Can. Mineral., 41, 201-206
  • Värmland
    • Filipstad
Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. ; K:Gatedal
      • Persberg district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
Switzerland
 
  • Grischun (Grisons; Graubünden)
    • Engadin
      • Piz Corvatsch
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 31
    • Schanfig Valley
      • Langwies
        • Fondei Valley
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 31; Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 31
  • St Gallen
    • Alvier Group
      • Sargans
Stalder, H. A., Wagner, A., Graeser, S. und Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf Verlag, Basel, 579 pp
  • Wallis (Valais)
    • Zermatt - Saas Fee area
      • Matt Valley
        • Täsch Valley
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 30-31
UK
 
  • Wales
    • Gwynedd (Caernarvonshire)
      • Lleyn Peninsula
        • Llanfaelrhys
          • Rhiw
No reference listed
USA
 
  • California
    • Amador Co.
      • Fiddletown District (Oleta District)
        • Fiddletown (Oleta)
Hewett, Donnel Foster, Charles Wesley Chesterman & Bennie Wyatt Troxel (1961), Tephroite in California manganese deposits: Economic Geology: 56: 49; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 60, 361; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 410, 459-460.
Hewett, Donnel Foster, Charles Wesley Chesterman & Bennie Wyatt Troxel (1961), Tephroite in California manganese deposits: Economic Geology: 56: 49; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 61; Pemberton, H. Earl (1983), Minerals of California: 410, 460.
    • Santa Clara Co.
      • Diablo Range
        • Black Wonder District
          • East Foothills
Rogers, Austin Flint (1919b), An interesting occurrence of manganese minerals near San Jose, California: American Journal of Science, 4th. Series: 48: 443; Ross, Clarence Samuel & Paul F. Kerr (1932), Manganese mineral of a vein near Bald Knob, North Carolina: American Mineralogist: 17: 13; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 61; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 413; www.mineralsocal.org
  • Colorado
    • San Juan Co.
      • Eureka District
        • Gladstone
          • Bonita Peak
Rocks & Min.: 63: 366-384.
  • Connecticut
    • Middlesex Co.
      • Haddam
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut minerals.
  • Massachusetts
    • Hampshire Co.
      • Cummington
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58
      • Plainfield
Quinn, Alonzo W. (1945). Geology of the Plainfield-Hawley area : with special reference to deposits of manganese and iron minerals (USGS Open-File Report: 45-28)
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Cook, : Am. Min.:54:1392-1398 (1969); White,T.G. & Hyde, B.G.: Electron Microscope study of the humite minerals: II. Mn-rich specimens: Physics and Chemistry of Minerals:8:167-174 (1982); Dunn,P.J.:(1985); Dunn(1995):Pt3:349.
        • Ogdensburg
          • Sterling Hill
Cook, D.K.: Am. Min.:54:1392-1398 (1969); Petersen, et al: A highly magnesian alleghanyite from Sterling Hill, NJ: Min. Rec.:15:299-302 (1984); Francis, C. A.: Am. Min.:70:182-185 (1985); Dunn(1995):Pt3:348-349.
  • North Carolina
    • Alleghany Co.
      • Sparta
        • Bald Knob
Rocks & Min.: 60:130-135.
  • Virginia
    • Carroll Co.
      • Southern Section-Blue Ridge Province
        • Gossan Lead District
Minerals of Virginia 1990 by R. V. Dietrich
    • Pittsylvania Co.
      • James River-Roanoke River Mn-Fe-Ba District
AmMin 88:740-747 (2003)
  • Washington
    • Jefferson Co.
      • Mount Jupiter
        • Elkhorn Group
Minerals of Washington, Bart Cannon, 1975
    • Mason Co.
      • Copper Creek (Boulder Creek)
Cannon, B. (1975): Minerals of Washington, p.39
Mineral and/or Locality  
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