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Delessite

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Formula:
(Mg,Fe,Fe,Al)(Si,Al)
 
4
O
 
10
(O,OH)
 
8
Name:Named after the mineralogist and geologist Achille-Joseph Delesse (1817–1881).
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
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
)
16.19.4Ferrogedrite
☐{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,Fe,Mg)
 
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

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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.
    Hide Locality List
    (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
    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 Mts
        • Idar-Oberstein
          • 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
    		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
    		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
        • Buxton
    		[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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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the 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 hundreds 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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