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Népouite

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Formula:
(Ni,Mg)3(Si2O5)(OH)4
System:
Orthorhombic
Colour:
Pale green
Hardness:
2 - 2½
Name:
Named after type locality

Classification of Népouite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
8/H.27-150
9.ED.15

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
71.1.2b.3

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
14.26.3

14 : Silicates not Containing Aluminum
26 : Silicates of Ni
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First Recorded Occurrence of Népouite

Physical Properties of Népouite

Vitreous, Pearly
Colour:
Pale green
Streak:
Greenish white
Hardness (Mohs):
2 - 2½

Crystallography of Népouite

Crystal System:
Orthorhombic
X-Ray Powder Diffraction Data:
d-spacingIntensity
7.31 (100)
4.55 (50b)
3.63 (90)
2.894 (60)
2.501 (70)
2.321 (40)
1.530 (60)

Optical Data of Népouite

Type:
Biaxial (-)
RI values:
nα = 1.600 - 1.630 nγ = 1.635 - 1.650
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v medium

Chemical Properties of Népouite

Formula:
(Ni,Mg)3(Si2O5)(OH)4
Essential elements:
All elements listed in formula:

Relationship of Népouite to other Species

Series:
Forms a series with Lizardite (see here)
Other Members of Group:
AmesiteMg2Al(AlSiO5)(OH)4
AntigoriteMg3(Si2O5)(OH)4
Baumite(Mg,Al,Mn,Zn,Fe)3(Si,Al)2O5(OH)4
Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
Brindleyite(Ni,Al)3(Si,Al)2O5(OH)4
Caryopilite(Mn,Mg)3(Si2O5)(OH)4
ChrysotileMg3(Si2O5)(OH)4
Clinochrysotile
CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
DickiteAl2(Si2O5)(OH)4
Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
GreenaliteFe2-3(Si2O5)(OH)4
HalloysiteAl2(Si2O5)(OH)4
KaoliniteAl2(Si2O5)(OH)4
KellyiteMn22+Al(AlSiO5)(OH)4
LizarditeMg3(Si2O5)(OH)4
ManandoniteLi2Al4(Si2AlB)O10(OH)8
NacriteAl2(Si2O5)(OH)4
Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4
Orthochrysotile
Parachrysotile
PecoraiteNi3(Si2O5)(OH)4
Webskyite
9.ED.05DickiteAl2(Si2O5)(OH)4
9.ED.05KaoliniteAl2(Si2O5)(OH)4
9.ED.05NacriteAl2(Si2O5)(OH)4
9.ED.05Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4
9.ED.10HalloysiteAl2(Si2O5)(OH)4
9.ED.10HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
9.ED.10Halloysite-7ÅAl2(Si2O5)(OH)4
9.ED.15AmesiteMg2Al(AlSiO5)(OH)4
9.ED.15AntigoriteMg3(Si2O5)(OH)4
9.ED.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
9.ED.15Brindleyite(Ni,Al)3(Si,Al)2O5(OH)4
9.ED.15Caryopilite(Mn,Mg)3(Si2O5)(OH)4
9.ED.15ChrysotileMg3(Si2O5)(OH)4
9.ED.15CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
9.ED.15Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
9.ED.15GreenaliteFe2-3(Si2O5)(OH)4
9.ED.15KellyiteMn22+Al(AlSiO5)(OH)4
9.ED.15LizarditeMg3(Si2O5)(OH)4
9.ED.15ManandoniteLi2Al4(Si2AlB)O10(OH)8
9.ED.15PecoraiteNi3(Si2O5)(OH)4
9.ED.15GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1)
9.ED.20ImogoliteAl2SiO3(OH)4
9.ED.20Neotocite(Mn,Fe,Mg)SiO3 · H2O
9.ED.25BismutoferriteFe23+Bi(SiO4)2(OH)
9.ED.25ChapmaniteFe23+Sb3+(Si2O5)O3(OH)
14.26.1Liebenbergite(Ni,Mg)2SiO4
14.26.2PecoraiteNi3(Si2O5)(OH)4
14.26.4Willemseite(Ni,Mg)3(Si4O10)(OH)2
14.26.5Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)
14.26.6Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2O

Other Names for Népouite

Name in Other Languages:
German:Népouit
Simplified Chinese:镍绿泥石
Spanish:Népouita

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 Népouite

Reference List:
American Mineralogist (1975): 60: 863-871.

Mineralogical Magazine (1981): 44: 153.

Internet Links for Népouite

Localities for Népouite

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.
Australia
 
  • Tasmania
    • Heazlewood district
RRUFF Project Specimen ID: R050268
  • Western Australia
    • Coolgardie Shire
      • Kambalda
        • Kambalda Nickel mines
          • Otter Juan mine
Eardleyite as a Product of the Supergene Alteration of Nickel Sulphides in Western Australia; E Nickel, C Davis, M Bussell, P Bridge, J Dunn, R Macdonald; American Mineralogist, Vol 62, pp 449-457, 1977
      • Widgiemooltha
No reference listed
    • Wiluna Shire
      • Mount Keith
Grguric, B.A. (2003) Minerals of the MKD5 nickel deposit, Mount Keith, Western Australia. Australian Journal of Mineralogy, Vol. 9, No. 2 , pg. 55-71.
Austria
 
  • Carinthia
    • Hohe Tauern
      • Reißeck group
        • Gmünd
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
          • Radlgraben
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
Burundi
 
  • Rutana Province
The Royal Museum for Central Africa (RMCA), sample # 13204; http://metafro.be/mineralogy/browse_hierarchical_geo?country=Burundi
Canada
 
  • Newfoundland and Labrador
    • Newfoundland
      • Baie Verte Peninsula
        • Baie Verte
          • Advocate Ophiolite complex
Escayola, M., Garuti, G., Zaccarini, F., Proenza, J.A., Bédard, J.H. & Van Staal, C. (2011) Chromitite and platinum-group-element mineralization at Middle Arm Brook, Advocate Ophiolite complex, Baie Verte Peninsula, Newfoundland, Canada. Canadian Mineralogist 49, 1523-1547.
China
 
  • Yunnan Province
    • Wenshan Autonomous Prefecture
      • Malipo Co.
Kaiji Yu (1981): Geology and Prospecting 17(1), 19-25 (in Chinese).
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • South Moravia Region
No reference listed
    • Vysočina Region
      • Bystřice nad Pernštejnem
Pelíšek, J.: Ni-nerosty v serpentinitu západní Moravy. Časopis pro mineralogii a geologii, 1987, roč. 32, č. 2, s. 207.
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Katanga Copper Crescent
      • Shinkolobwe
MinRec 20:287-288
Dominican Republic
 
  • Monseñor Nouel Province
    • Bonao
Rob Lavinsky
Germany
 
  • Bavaria
    • Franconia
      • Maroldsweisach
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Glauchau
      • Callenberg
XRD and SEM-EDX analysis (T. Witzke)
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Lavrion (Laurion; Laurium)
No reference listed
Indonesia
 
  • Moluccas Islands
    • Maluku Province (Moluccas Province)
Taixu Luo (2008): Geology and Prospecting 52(4), 45-49
  • Sulawesi Island (Celebes Island)
    • Sulawesi Tengah Province (Central Sulawesi Province)
      • Petasia
Wei Fu, Yongzhang Zhou, Yuanrong Chen, Yunhu Hu, Nanchun Chen, Hujie Niu, Zhiwei Zhang, and Xiaolong Li (2010): Earth Science Frontiers 17(2), 127-139
Italy
 
  • Piedmont
    • Cuneo Province
      • Po Valley
        • Crissolo
          • Pian Melzé (Pian della Regina)
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    • Torino Province
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
      • Susa Valley
        • Almese
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Japan
 
  • Honshu Island
    • Kinki region
      • Mie Prefecture
        • Toba City
Minakawa et al (1989) Sanko-Gakkai Kou'en-Youshi, 27.; Go Ito, 2004.
    • Tohoku Region
      • Fukushima Prefecture
Matsubara (1996) Memoirs of the National Science Museum, 29, 33-40.
Morocco
 
  • Souss-Massa-Draâ Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azer District (Bou Azzer District)
          • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
New Caledonia
Brindley, G.W. & Hsien Ming Wan. (1975): Compositions, structures, and thermal behavior of nickel-containing minerals in the lizardite-nepouite series. American Mineralogist. 60, 863-871
  • Northern Province
    • Canala Commune
Dana 6:A2:75.
    • Houaïlou Commune
Berger, V.I., Singer, D.A., Bliss, J.D., and Moring, B.C., 2011, Ni-Co laterite deposits of the world; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2011-1058.
    • Kouaoua Commune
Dana 6:A2:75.
    • Kua River
Dana 6:A2:75.
    • Poya North Commune
      • Népoui
Dana 6:A2:75.
C.R.Acad.Sci.Paris (1906) 143, 1173; Bull.Soc.fr.Min.(1907) 30, 17-28
  • Southern Province
    • Comboui River
Dana 6:A2:75.
    • Yaté Commune
Wells, Martin A.; Ramanaidou, Erick R.; Verrall, Michael; Tessarolo, Christian (2009): Mineralogy and crystal chemistry of "garnierites" in the Goro lateritic nickel deposit, New Caledonia. European Journal of Mineralogy 21, 467-483. ; Wells, M. A., Ramanaidou, E. R., Verrall, M., & Tessarolo, C. (2009). Mineralogy and crystal chemistry of “garnierites” in the Goro lateritic nickel deposit, New Caledonia. European Journal of Mineralogy, 21(2), 467-483.; Berger, V.I., Singer, D.A., Bliss, J.D., and Moring, B.C., 2011, Ni-Co laterite deposits of the world; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2011-1058.
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Ząbkowice District
      • Ząbkowice (Frankenstein)
Spangenberg, K., and Müller, M. (1949): Contributions to Mineralogy and Petrology 1(5/6), 560-572.
Spangenberg, K., and Müller, M. (1949): Die lateritische Zersetzung des Peridotits bei der Bildung der Nickelerzlagerstätte von Frankenstein in Schlesien. Contributions to Mineralogy and Petrology 1(5/6), 560-572
Portugal
 
  • Aveiro District
    • Albergaria-a-Velha
      • Branca
Marques de Sá, J. & Leal Gomes, C. (2010): Les mines de cuivre et nickel de Palhal et Telhadela, Albergaria-a-Velha, Aveiro, Portugal. Le Règne Minéral, 92, 36-47.
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Serov District
          • Kola massif
Mikhailov, B.M. (2000): Lithology and Mineral Resources 35(4), 351-364.
    • Southern Urals
      • Chelyabinsk Oblast'
        • Ufaley District (Ufalei District)
Talovina, I.V., Lazarenkov, V.G., Ryzhkova, S.O., Ugol'kov, V.L., and Vorontsova, N.I. (2008): Lithology and Mineral Resources 43(6), 588-595.; Berger, V.I., Singer, D.A., Bliss, J.D., and Moring, B.C., 2011, Ni-Co laterite deposits of the world; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2011-1058.
South Africa
 
  • Limpopo Province
    • Vhembe District
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa, 227 pp.
  • Mpumalanga Province
    • Ehlanzeni District
      • Barberton
        • Bon Accord
Am. Min. 61, 502 (1976)
South Korea
 
  • Gyeonggi-do (Kyonggi-do)
    • Gwancheon city (Kwancheon)
Song, Y., Moon, H. S., & Chon, H. T. (1995). New occurrence and characterization of Niserpentines in the Kwangcheon area, Korea. Clay Minerals, 30(3), 211-224.
Spain
 
  • Andalusia
    • Málaga
      • Carratraca
Romero Silva, JC (2003) Minerales y Rocas de la provincia de Malaga. Published by the Malaga County Council CEDMA. 318pp. 1 map
        • Los Jarales
Romero Silva JC (2003) Minerales y Rocas de la provincia de Malaga España. Edita CEDMA County council
Romero Silva JC (2003). Minerales y Rocas de la Provincia de Málaga. CEDMA edition County council. Málaga 318pp
      • Estepona
Romero Silva, JC (2003). Minerales y Rocas de la provincia de Málaga. Edited by Cedma. Malaga County Council 318 pg. 1 map
      • Ojén
        • Ojén lherzolite massif
Romero Silva JC (2003) Minerales y Rocas de la provincia de Malaga España. Edita CEDMA County council
      • Ronda Massif
Romero Silva, JC (2003). Minerales y Rocas de la provincia de Málaga. Edited by Cedma. Malaga County Council 318 pg. 1 map
  • Catalonia
    • Tarragona
      • Priorat
        • Falset
Joan Abella i Creus specimens; XRD by Dr. Felicià Plana and Josep Elvira, Consejo Superior de Investigaciones Científicas en Barcelona.
USA
 
  • California
    • Del Norte Co.
      • Klamath Mts
        • Diamond Creek District
          • Rockland
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 197; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
        • Gasquet
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
        • Rocky Saddle
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
    • El Dorado Co.
      • Flagstaff Hill area
        • Pilliken
          • Salmon Falls
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 387, 438; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 197; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
Montoya, J.W. & Gretta S. Baur (1963), Nickeliferous serpentines, chlorites, and related minerals found in two lateritic ores: American Mineralogist: 48: 1227, 1228.
    • Imperial Co.
      • Coyote Mts
        • Coyote Wells
Pemberton, H Earl " Minerals of California" Van Nostrand Reinholt Press
          • Coyote Mountain
Morton, P.K. (1977) Mines and mineral resources of Imperial County, California. California Division of Mines and Geology County Report 7, 104 pp.: 77; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
    • Mariposa Co.
      • Mother Lode Belt
        • Bagby-Mariposa-Mount Bullion-Whitlock District
          • Bagby
            • Pacific Mining Co. group
Bradley, W.W. (1941), Thirty-seventh report of the State Mineralogist: California Division Mines Report 37: 491; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 422.
    • San Benito Co.
      • Diablo Range
        • New Idria District
          • Idria (New Idria)
Bradley, W.W. (1938), Thirty-fourth report of the State Mineralogist: California Division Mines Report 34: 608; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 197; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 423.
    • Santa Cruz Co.
      • Santa Cruz
Mineralogical Record: 17:315
    • Tulare Co.
      • Ivanhoe
        • Venice Hills
Goodwin, Joseph Grant (1958), Mines and mineral resources of Tulare County, California: California Journal of Mines and Geology (Report 54): 54(3): 344; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 424.
  • New Mexico
    • Luna Co.
Excalibur Mineral Corporation - Rare Species K-N
Genth,F.A,1891,The Minerals of North Carolina,pg.63 and pg.88
    • Jackson Co.
      • Webster-Balsam
Conley,J.F,1958,Mineral Localities of North Carolina,pg 39,32,64
    • Macon Co.
      • Cowee Valley
        • Ellijay District
          • Franklin
            • Corundum Hill
Genth,F.A,1891,The Minerals of North Carolina,pg63 and pg.103
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