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Halloysite-10Å

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Formula:
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
· 2H
 
2
O
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

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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Type Occurrence of Halloysite-10Å

Type Locality:Angleur, Liège, Liège Province, Belgium

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:
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:
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
· 2H
 
2
O
Simplified for copy/paste:Al2Si2O5(OH)4·2H2O
Essential elements:Al, H, O, Si
All elements listed in formula:Al, H, O, Si

Other Names for Halloysite-10Å

Synonyms:
EndelliteHydrated HalloysiteHydrohalloysite
Other Languages:
Simplified Chinese:叙永石

Other Information

Health Warning: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

Search Engines:
  • Look for Halloysite-10Å on Google
  • Look for Halloysite-10Å images on Google
  • External Links:
  • Look for Halloysite-10Å on Webmineral
  • Look for Halloysite-10Å on Athena Mineralogy
  • Look for Halloysite-10Å on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Fabre Minerals - search for Halloysite-10Å specimens
  • Find Halloysite-10Å on www.crystalclassics.co.uk
  • Localities for Halloysite-10Å

    The 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. ? 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)
    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
    • 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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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