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Orschallite

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Formula:
Ca
 
3
(SO
 
3
)
 
2
(SO
 
4
) · 12H
 
2
O
System:TrigonalHardness:4
This page provides mineralogical data about Orschallite.

Classification of Orschallite

IMA status:Approved 1990
Strunz 8th edition ID:4/K.05-15
Nickel-Strunz 10th (pending) edition ID:4.JE.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
Dana 8th edition ID:34.8.7.1

34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
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Type Occurrence of Orschallite

Type Locality:Hannebacher Ley (Hannebacher Lay), Hannebach, Niederzissen, Eifel Mts, Rhineland-Palatinate, Germany
Year of Discovery:1993

Physical Properties of Orschallite

Hardness (Mohs):4

Crystallography of Orschallite

Crystal System:Trigonal
Cell Parameters:a = 11.35Å, c = 28.32Å
Ratio:a:c = 1 : 2.495
Unit Cell Volume:V 3,159.48 ų (Calculated from Unit Cell)

Optical Data of Orschallite

Type:Uniaxial (+)
RI values: nω = 1.494 nε = 1.496
Maximum Birefringence:δ = 0.002

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

Chemical Properties of Orschallite

Formula:
Ca
 
3
(SO
 
3
)
 
2
(SO
 
4
) · 12H
 
2
O
Essential elements:Ca, H, O, S
All elements listed in formula:Ca, H, O, S

Relationship of Orschallite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JE.05Gravegliaite
Mn
2+
 
SO
 
3
 · 3H
 
2
O
4.JE.10Hannebachite
CaSO
 
3
 · H
 
2
O
4.JE.20Scotlandite
PbSO
 
3

Other Names for Orschallite

Synonyms:
IMA1990-041
Other Languages:
German:Orschallit
Russian:Оршаллит
Spanish:Orschallita

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 Orschallite

Reference List:

- +
Weidenthaler, C., Tillmanns, E., Hentschel, G. (1993): Orschallite, Ca3(SO3)2SO4*12H2O, a new calcium-sulfite-sulfate-hydrate mineral. Mineralogy and Petrology, 48, 167-177.

Internet Links for Orschallite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Orschallite details from Handbook of Mineralogy (PDF)
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    • Localities for Orschallite

    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.
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    (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
     
    • Midi-Pyrénées
      • Aveyron
    		Eytier J.R. & Ch., Favreau G., Devouard B., Vigier J. (2004), Minéraux de pyrométamorphisme de Lapanouse-de Sévérac (Aveyron), Cahier des Micromonteurs, n°85, pp: 3-58
    Germany
     
    • Rhineland-Palatinate
      • Eifel Mts
        • Niederzissen
          • Hannebach
    		Weidenthaler, C., Tillmanns, E., Hentschel, G. (1993): Orschallite, Ca3(SO3)2SO4*12H2O, a new calcium-sulfite-sulfate-hydrate mineral. Mineralogy and Petrology, 48, 167-177 ; NM 90-94 (1997)
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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. Current server date and time: 22nd Jun 2011 05:35:44
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