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Deliensite

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Mas d'Alary (Mas d'Alary MCO), Lodève, Hérault, Languedoc-Roussillon, France
© Stephan Wolfsried

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Formula:
Fe
2+
 
(UO
 
2
)
 
2
(SO
 
4
)
 
2
(OH)
 
2
·3H
 
2
O
System:OrthorhombicLustre:Vitreous
Hardness:2
Name:For Dr. Michel Deliens (1939- ), Royal Belgian Institute of Natural History, Brussels, Belgium.
This page provides mineralogical data about Deliensite.

Classification of Deliensite

IMA status:Approved
Strunz 8th edition ID:6/D.20-85
Nickel-Strunz 10th (pending) edition ID:7.EB.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
B : With medium-sized cations
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Type Occurrence of Deliensite

Type Locality:Mas d'Alary-Village, Lodève, Hérault, Languedoc-Roussillon, France

Physical Properties of Deliensite

Lustre:Vitreous
Hardness (Mohs):2

Crystallography of Deliensite

Crystal System:Orthorhombic

Optical Data of Deliensite

Type:Biaxial (-)
RI values: nα = 1.432 nβ = 1.470 nγ = 1.492
2V:Measured: 73° , Calculated: 72°
Maximum Birefringence:δ = 0.060

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:weak

Chemical Properties of Deliensite

Formula:
Fe
2+
 
(UO
 
2
)
 
2
(SO
 
4
)
 
2
(OH)
 
2
·3H
 
2
O
Essential elements:Fe, H, O, S, U
All elements listed in formula:Fe, H, O, S, U

Relationship of Deliensite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.EB.05Johannite
Cu(UO
 
2
)
 
2
[OH|SO
 
4
]
 
2
 · 8H
 
2
O

Other Names for Deliensite

Synonyms:
IMA1996-013
Other Languages:
German:Deliensit
Spanish:Deliensita

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 Deliensite

Reference List:Mineralogical Record: 29: 468.

Canadian Mineralogist (1997): 35: 1021-1025.

Internet Links for Deliensite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Deliensite in the Natural History Museum (London) online catalogue
  • Deliensite details from Handbook of Mineralogy (PDF)
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    Localities for Deliensite

    (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.
    France
     
    • Languedoc-Roussillon
      • Hérault
        • Lodève
    		R. Vochten, N. Blaton, O. Peeters: Canadian Mineralogist 35 (1997), 1021-1025
    [Le Cahier des Micromonteurs, 1998, 2, p.13-26]
    Caubel A.(1998), Le Mas Lavayre, Hérault, un deuxième gîte de deliensite, Le Règne Minéral, n°22, pp: 14-17
    Mineral and/or Locality
    Google
     
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