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Delessite

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Formula:
(Mg,Fe,Fe,Al)(Si,Al)
 
4
O
 
10
(O,OH)
 
8
Name:Named by Karl Friedrich Naumann in 1850 in honor of Achille-Joseph Delesse (1817 Metz, France – March 24, 1881 Paris, France), mineralogist and geologist of the Sorbonne University and later, the Ecole des Mines.
A variety of Clinochlore

Fe-bearing variety of clinochlore.

Classification of Delessite

Hey's CIM Ref.:16.19.10

16 : Silicates Containing Aluminum and other Metals
19 : Aluminosilicates of Fe and Mg
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Chemical Properties of Delessite

Formula:
(Mg,Fe,Fe,Al)(Si,Al)
 
4
O
 
10
(O,OH)
 
8
Simplified for copy/paste:(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8
Essential elements:Mg, O, Si
All elements listed in formula:Al, Fe, H, Mg, O, Si

Relationship of Delessite to other Species

Related Minerals - Hey's Index Grouping:

- +
16.19.1Indialite
Mg
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
16.19.2Cordierite
(Mg,Fe)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
16.19.3Sekaninaite
(Fe,Mg)
 
2
Al
 
3
(AlSi
 
5
O
 
18
)
16.19.4Ferro-gedrite
☐{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.19.5Staurolite
(Fe
2+
 
,Mg,Zn)
 
1.5-2
Al
 
9
(SiO
 
4
)
 
4
O
 
6
(OH,O)
 
2
16.19.6Chloritoid
(Fe
2+
 
,Mg,Mn
2+
 
)Al
 
2
(SiO
 
4
)O(OH)
 
2
16.19.7Amesite
Mg
 
2
Al(AlSiO
 
5
)(OH)
 
4
16.19.8Corundophilite
(Mg,Fe,Al)
 
6
(Si,Al)
 
4
O
 
10
(OH)
 
8
16.19.9Yoderite
Mg(Al,Fe
3+
 
)
 
3
(SiO
 
4
)
 
2
O(OH)
16.19.11Ferrocarpholite
(Fe
2+
 
,Mg)Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.19.12Magnesiocarpholite
(Mg,Fe
2+
 
)Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.19.13Chamosite
(Fe
2+
 
,Mg)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.14Orthochamosite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH,O)
 
8
16.19.15Berthierine
(Fe
2+
 
,Fe
3+
 
,AlMg)
 
2-3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
16.19.16Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
((Si,Al)
 
2
O
 
5
)(OH)
 
4
16.19.17Clinochlore
(Mg,Fe
2+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.18Gedrite
☐{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.19.19Magnesiogedrite
16.19.20Diabantite
(Mg,Fe,Al)
 
6
((Si,Al)
 
4
O
 
10
)(OH)
 
8
16.19.21Sudoite
(Mg,Fe
2+
 
)
 
2
Al
 
3
(AlSi
 
3
O
 
10
)(OH)
 
8
16.19.22Vermiculite
(Mg,Fe,Al)
 
3
((Al,Si)
 
4
O
 
10
)(OH)
 
2
· 4H
 
2
O
16.19.23Corrensite
(Mg,Fe)
 
9
((Si,Al)
 
8
O
 
20
)(OH)
 
10
· nH
 
2
O

Other Names for Delessite

Synonyms:
HalliteMelanolite
Other Languages:
French:Chlorite Ferrugineuse
German:Delessit
Melanolit
Simplified Chinese:铁叶绿泥石
Spanish:Delessita
Melanolita

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.

Internet Links for Delessite

Search Engines:
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  • Mineral Dealers:
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  • Rare and Unusual minerals at Mineralogical Research Company
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  • Lapis Mineral Magazin
  • Wilensky Fine Minerals
  • Delessite specimens for sale - minfind.com
  • Jobs:
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  • Localities for Delessite

    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.
    Antarctica
    AmMin 36:361-367
    Bulgaria
     
    • Sofiya Town Oblast (Grad Sofia Oblast)
      • Sofiya Obshtina (Sofia Obshtina)
    I. Kostov, V. Breskovska, J. Mincheva-Stefanova, G. Kirov (1964): Minerals of Bulgaria. Sofia, Bulgaria, 540 pp. (in Bulgarian).
    China
     
    • Jiangxi Province
      • Shangrao Prefecture
        • Yanshan Co. (Qianshan Co.)
          • Yongping
    Bi Zhu, Shaoyong Jiang, Xin Ding, Yaohui Jiang, Pei Ni, and Liangxin Gu (2008): Acta Petrologica Sinica 24(8), 1900-1916
    • Qinghai Province
      • Haixi Autonomous Prefecture
        • Golmud Co. (Ge'ermu Co.)
          • Qimantage Mtns
    Miao Yu, Chengyou Feng, Guangying Bao, Hongchuan Liu, Yiming Zhao, Daxin Li, Ye Xiao, and Jiannan Liu (2013): Mineral Deposits 32(1), 55-76
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Beroun (Beraun)
    Vtělenský J. (1959): Mineralogie oolitických železných rud z některých ložisek Barrandienu. Geotechnica, sv. 26, Nakladatelství ČSAV Praha.
      • Karlovy Vary Region
        • Kraslice (Graslitz)
    Beran, P.: Mineralogie ložiska Cu (Ag, Au, Co) rud Tisová u Kraslic. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1997, roč. 4-5, s. 65-77.
      • Ústí Region
        • Ústí nad Labem (Aussig)
    Ulrych, J. et al. (2000): Tertiary phonolite laccolith of Mariánská hora hill, N. Bohemia: geological, petrological and mineralogical characteristics. Acta Montana IRSM AS CR, series A No. 15 (116), p. 5-44.
    • Moravia (Mähren; Maehren)
      • Vysočina Region
    Houzar, S.: Přehled minerálů amfibolitového lomu v Mirošově (západní Morava), Minerál, 1999, roč. 7, č. 4, s. 294-296.
    Germany
     
    • Rhineland-Palatinate
      • Hunsrück
        • Herrstein
          • Niederwörresbach
    Weiss: "Mineralfundstellen, Deutschland West", 1990
    S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Madagascar
     
    • Fianarantsoa Province
      • Atsimo-Atsinanana Region
    Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A. Challamel (Éditeur), Paris. p 603
    New Zealand
     
    • North Island
      • Waikato
        • Thames-Coromandel
          • Tararu
    Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    • South Island
      • Aorangi
    Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    North Korea
     
    • Kangwon Province
      • Samchok-kun
        • Puksam-myon
    Kinosaki, Y. (1941) Jour. Min. Soc. Korea, 24, 12.
    Norway
     
    • Aust-Agder
      • Valle
        • Strømsheia
    Neumann, H. (1955): Kobberforekomstene på Straumsheia. Norges Geologiske Undersøkelse 191, 18-29
    Slovakia
     
    • Banská Bystrica Region
      • Brezno Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
        • Mýto pod Ďumbierom
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Bratislava Region
      • Malacky Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    • Košice Region
      • Gelnica Co.
        • Švedlár (Schwedler)
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Košice Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Rožňava Co.
        • Vyšná Slaná (Obersalz)
    Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    • Prešov Region
      • Poprad Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Trnava Region
      • Trnava Co.
        • Smolenice
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    • Žilina Region
      • Liptovský Mikuláš Co.
        • Východná
    Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    Sweden
     
    • Hälsingland
      • Ljusdal
    • Medelpad
      • Timrå
    UK
     
    • England
      • Derbyshire
        • Blackwell-in-the-Peak
    [Specimen in the Natural History Museum, London]
    USA
     
    • Arizona
      • Santa Cruz Co.
        • Santa Rita Mts
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 339-340.
    • Massachusetts
      • Essex Co.
    Gleba, 1978. Massachusetts Mineral & Fossil Localities
      • Middlesex Co.
    Yale Peabody Museum #5236
    Palache & Fraprie, Proc.Am.Acad.Arts.Sci. 38:383-393.
    Gleba, 1978. Massachusetts Mineral & Fossil Localities
    • Michigan
    www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf.
      • Keweenaw Co.
        • Phoenix
    Mineralogy of Michigan (E. W. Heinrich & G. W. Robinson)
    • Utah
      • Utah Co.
        • East Tintic Mts
    UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Virginia
      • Floyd Co.
    Minerals of Virginia, 1990 by R. V. Dietrich
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