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Deweylite

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Formula:
Mg
 
4
Si
 
3
O
 
10
· 6H
 
2
O ?


A mixture of various poorly ordered trioctahedral 1:1 and 2:1 layer silicates, mainly lizardite and stevensite.

Classification of Deweylite

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Chemical Properties of Deweylite

Formula:
Mg
 
4
Si
 
3
O
 
10
· 6H
 
2
O ?
Essential elements:H, Mg, O, Si
All elements listed in formula:H, Mg, O, Si

Other Names for Deweylite

Synonyms:
DeveiliteGimnitePseudodeweylitePseudogymnite
Other Languages:
German:Deveilit
Deweylit
Gimnit
Pseudodeweylit
Pseudogymnit
Spanish:Deveilita
Deweylita
Gimnita
Pseudodeweylita
Pseudogymnita

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 Deweylite

Reference List:

- +
Clark, 1993, "Hey's Mineral Index"
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)

Internet Links for Deweylite

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  • Localities for Deweylite

    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.
    Austria
     
    • Carinthia
      • Hohe Tauern
        • Reißeck group
          • Gmünd
    M. Puttner: Carinthia II 184./104.:43-47 (1994)
    • Styria
      • Bad Radkersburg
        • Klöch
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
      • Leoben
    Aufschluss 1972(SB), 80-83
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • South Moravia Region
        • Letovice (Lettowitz)
    Ulrych, J.: Stichtit z hadcového tělesa od Slatinky u Letovic. Časopis pro mineralogii a geologii, 1966, roč. 11, č. 3, s. 311-315.
    India
     
    • Andhra Pradesh
      • Kadapa (Cuddapah)
    Anantha Iyer, G.V. et al (1987) Memoir No. 6, Geological Society of India, 459-469.
    Italy
     
    • Liguria
      • Genova Province
        • Genova
          • Borzoli
    Giuseppe Pipino - L'antica miniera di Monte Ramazzo e i suoi minerali - Rivista Mineralogica Italiana, Milano, vol. 8, fasc. 3, 1977
      • La Spezia Province
        • Beverino
    Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia
        • Carro
    Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia
    • Trentino-Alto Adige
      • Trento Province
        • Fassa Valley
          • Monzoni Mts
    Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Fukui Prefecture
          • Oi-gun
            • Oi-cho-Hongo
    Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
      • Chugoku region
        • Okayama prefecture
          • Niimi City
    Slovakia
     
    • Košice Region
      • Košice Co.
        • Jasov
    Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Prešov Region
      • Prešov Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    USA
     
    • California
      • Inyo Co.
    Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, 77 pp.: 16; Hall, Wayne Everett & Edward M. Mackevett (1963), Geology and ore deposits of the Darwin quadrangle, Inyo County, California: USGS PP 368: 62; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 167.
      • Napa Co.
        • Mayacmas Mts (Mayacamas Mts)
          • Calistoga District (Silverado District)
            • Calistoga
              • The Palisades [range]
    Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 167.
      • Riverside Co.
        • Crestmore
          • Crestmore quarries
            • Chino Hill
    Rogers, Austin Flint (1918b), An American occurrence of periclase and its bearing on the origin and history of calcite brucite rocks: American Journal of Science, 4th. Series: 46: 584; Daly, John W. (1933),Paragenesis of mineral assemblages at Crestmore, California (abstract): …American Mineralogist (1935): 20: 651; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 167.
            • Sky Blue Hill
    Daly, John W. (1935) Paragenesis of the minerals a Crestmore, Riverside County, California. American Mineralogist: 20: 638-659; Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmorre, California. American Mineralogist: 26: 352-381.
      • San Bernardino Co.
        • Ivanpah District (Copper World District)
          • Clark Mts (Clark Mountain Range)
            • Clark Mountain Sub-District
              • Clark Mountain
    Schaller, Waldemar Theodore (1935), Monticellite from San Bernardino County, California, and the monticellite series: American Mineralogist: 20: 816; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 167.
      • Santa Clara Co.
        • Diablo Range
          • Red Mountain District
            • Red Mountain
    Rogers, Austin Flint (1912b), Notes on rare minerals from California: Columbia University, School of Mines Quarterly: 33: 380; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 167.
    • Delaware
      • New Castle Co.
        • Centerville (Centreville)
    Dana 6: 1070.
    • Maine
      • Knox Co.
        • Thomaston
    King & Foord, 1994. Mineralogy of Maine, V.1.
    • Maryland
      • Baltimore Co.
        • Blue Mount
    Rocks & Min.:12:247.
        • Delight
          • Soldiers' Delight ridge
    Rocks & Min.:11:111; 19:148.
        • Owings Mills
    Rocks & Min.: 20:473.
      • Montgomery Co.
        • Rockville
    F. Parker (2005) "The Minerals of the Hunting Hill Quarry, Rockville, Maryland" Mineralogical Record 35:435-446.
    • Nevada
      • Nye Co.
        • Gabbs District
    NBMG Spec. Pub. 31 Minerals of Nevada
      • White Pine Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    • New Jersey
      • Hudson Co.
        • Hoboken
    No reference listed
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 84.
      • New York City
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 29.
    Observed by David S. Bernstein- February of 2012
    Collected by Steve Okulewicz
      • Westchester Co.
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 83.
    • North Carolina
    Genth,F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74
        • Webster-Balsam
    Wilson,W.F and McKenzie,B.J,1978, Mineral Collecting Sites in North Carolina ,Information Circular 24
      • Macon Co.
        • Cowee Valley
          • Ellijay District
            • Franklin
              • Corundum Hill
    Ref.: Dana 6:499, 560 & 1077.
    Genth,F.A.,1891,The Minerals Of North Carolina:USGS Bulletion No.74
    Genth,F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74
    • Pennsylvania
      • Berks Co.
        • Cumru Township
    Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
        • Spring Township
    Gordon: Mineralogy of Pennsylvania, 1922 p. 159
    Gordon: Mineralogy of Pennysylvania, 1922 p. 159
      • Chester Co.
        • Newlin Township
          • Unionville
    Mineralogy of Pennsylvania - 1922; Samual S. Gordon, pg. 173
        • State Line Chromite District
          • West Nottingham Township
    Dana 6: 1067.
    www.libraries.psu.edu/emsl/guides/X/delaware.htm.
        • Middletown Township
          • Elwyn
    Mineralogy of Pennsylvania-1922; Samuel Gordon, pgs 123-124
    Gordon's Mineralogy of Pennsylvania (1922) p. 191
      • Lancaster Co.
        • State Line Chromite District
          • Fulton Township
    Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania; American Mineralogist 1965: 50: 1708-1716.
    Personally Collected 4/12/2008, Mark J. Sigouin, Pennsylvania Licenced Professional Geologist
          • Little Britain Township
    Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 206
            • Texas
    Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania
      • Philadelphia Co.
        • Lafayette
    Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 221-222
    • Vermont
      • Windham Co.
        • Newfane
    Rocks & Min. Vol. 71, (1996)
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. 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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