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Halloysite-10Å

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Jean-Baptiste-Julien d'Omalius d'Halloy(1783-1875)
Formula:
Al2Si2O5(OH)4 · 2H2O
System:
Monoclinic
Name:
Named after the Belgian geologist Jean-Baptiste d'Omalius d'Halloy, (February 16th 1783 - January 15th 1875), who discovered the mineral. He was a nobleman, a statesman, and pioneer of modern geology in Belgium. The 10-Å(ngström) refers to the layer thickness.
Note: halloysite-10Å is not a polytype of halloysite.
It is an approved (grandfathered) species distinct from halloysite-7Å.

Synonyms are "endellite" (name for halloysite-10Å in European literature; discredited in 2006), "hydrated halloysite" and "hydrohalloysite."
Further localities are listed under "endellite".



Classification of Halloysite-10Å

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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First Recorded Occurrence of Halloysite-10Å

Crystallography of Halloysite-10Å

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Cell Parameters:
a = 5.1Å, b = 8.9Å, c = 10.25Å
β = 100.2°
Ratio:
a:b:c = 0.573 : 1 : 1.152
Unit Cell Volume:
V 457.89 ų (Calculated from Unit Cell)
Comment:
Space group Cc.
X-Ray Powder Diffraction Data:
d-spacingIntensity
10 (10)
4.36 (7)
3.35 (4)
2.54 (3.5)
1.48 (3)
1.672 (1.4)
1.281 (0.8)

Chemical Properties of Halloysite-10Å

Formula:
Al2Si2O5(OH)4 · 2H2O
Essential elements:
All elements listed in formula:

Other Names for Halloysite-10Å

Name in Other Languages:
Simplified Chinese:叙永石

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 Halloysite-10Å

Reference List:
Berthier (1826)

American Mineralogist 28 (1943), 1

Am. Mineral. 40 (1955) 1110

Powder Diffraction File (International Center for Diffraction Data) 29-1489

Clays and Clay Minerals 26 (1978), 25

Powder Diffraction 4 (1989), 19

Internet Links for Halloysite-10Å

Localities for Halloysite-10Å

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.
Argentina
 
  • Río Negro
CRAVERO, Fernanda; MARTINEZ, Gabriel Alexis and PESTALARD, Fernando. Halloysite deposits in Mamil Choique, provinceof Río Negro, Patagonia. Rev. Asoc. Geol. Argent. [online]. 2009, vol.65, n.3, pp. 586-592.
Austria
 
  • Styria
    • Bad Gleichenberg
      • Wilhelmsdorf
# Uwe Kolitsch (powder X-ray diffraction; Halloysite-10Å)
Belgium
 
  • Liège Province
    • Liège
Ann.Chim.Phys., sér. 2 (1826) 32, 332-335
China
 
  • Fujian Province
    • Xiamen Prefecture
      • Tong'an District
Mao Xingli and Yan Yipeng (1987): Journal of Fuzhou University, Natural Sciences Edition 15(3); Acta Petrologica et Mineralogica 11(2), 146-156 (1992)
  • Jiangsu Province
    • Suzhou Prefecture
      • Huqiu District
Kecong Han and Shengyun Ma (1985): Mineral Deposits 4(2), 58-68
  • Sichuan Province
    • Luzhou Prefecture
      • Xuyong Co.
Guoping Zhou (1990): Acta Mineralogica Sinica 10(1), 46-51
Finland
 
  • Southern Finland Region
    • Hämeenlinna
      • Kalvola
Lindquist, K. & Alviola, R. (1996): Fracture filling endellite from Iittala, Finland. in: 14th Conference on Clay Mineralogy and Petrology, September 2-6, 1996, Banská Štiavnica, Slovak Republik. Abstracts. Geologia Carpathica-Series Clays. 4 (4), 101-102
Germany
 
  • Hesse
    • Wetzlar
      • Weilburg
        • Essershausen
Blaß, G. & Möhn, G. (2010): Neue Mineralien von der Grube Mark bei Essershausen im Taunus. Mineralien-Welt 21 (2), 26-29.
Hungary
 
  • Veszprém Co.
    • Balaton Uplands
      • Tapolcai Basin
        • Zalahaláp
Kónya-MÁFI,2008
Italy
 
  • Basilicata
    • Potenza Province
      • Melfi
        • Vulture Mount
Giorgio Bortolozzi collection (analysed by AMI UK Service)
  • Tuscany
    • Grosseto Province
      • Massa Marittima
Ciriotti, M.E., Blaß, G. (2010): Pot-pourri 2009: Identificazioni UKiS AMI, Minerali italiani di interesse. Micro, 1/2010, 124-127
Japan
 
  • Kyushu Region
    • Nansei Archipelago
      • Okinawa Prefecture
        • Tonaki Island
Alfredo Petrov specimens; PXRD by John Attard, 1-2013.
Russia
 
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Mezhozernyi
Igor Savin data
        • 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.
Talovina, I.V., Lazarenkov, V.G., and Vorontsova, N.I. (2003): Lithology and Mineral Resources 38(5), 403-415.
      • Orenburgskaya Oblast'
        • Svetlyi
          • Buruktal District
            • Buruktal massif
Talovina, I.V., Lazarenkov, V.G., and Vorontsova, N.I. (2003): Lithology and Mineral Resources 38(5), 403-415.
USA
 
  • California
    • Inyo Co.
      • Darwin Hills
        • Darwin District
          • Darwin
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 436.
    • San Diego Co.
      • Pala District
        • Pala
Jahns, Richard Henry & Wright, Lauren A. (1951), Gem and lithium-bearing pegmatites of the Pala district, San Diego County, California. California Division of Mines Special Report 7-A: p. 31.
  • Georgia
    • DeKalb Co.
Grant,Williard H.( ) Weathering Of Stone Mountain Granite:Emory University,Atlanta,Georgia
  • Hawaii
    • Kauai Co.
Patterson,Sam H. and Murray,Haydn H. (1984) Kaolin,Refractory Clay,Ball Clay,and Halloysite in North America, Hawaii, and the Caribbean Region: USGS Professional Paper 1306
  • Indiana
    • Martin Co.
      • Shoals
Patterson,Sam H.,and Murray,Haydn H.(1984) Kaolin,Refractory Clay,Ball Clay, and Halloysite in North America,Hawaii and the Caribbean Region:U.S Department of the Interior,Geological Survey Professional Paper #1306
Sunderman, J & C. Beck (1959) Hydrobasaluminite from Shoals, Indiana: American Mineralogist: 54: 1363-1373.
  • Utah
    • Juab Co.
      • East Tintic Mts
        • Tintic District
          • Silver City
Patterson,Sam H. and Murray.Haydn H. (1984) Kaolin,Refractory Clay,Ball Clay,and Halloysite in North America,Hawaii and the Caribbean Region : USGS Professional Paper 1306
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