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Kottenheimite

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Formula:
Ca
 
3
Si(SO
 
4
)
 
2
(OH)
 
6
·12H
 
2
O
System:Hexagonal
Member of:Ettringite Group
Name:Named for the community Kottenheim, located near Mayen and the Bellerberg volcano.


Closely related to hielscherite.

Classification of Kottenheimite

IMA status:Approved 2011
mindat.org URL:http://www.mindat.org/min-42534.html
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Type Occurrence of Kottenheimite

Type Locality:Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Place of Conservation of Type Material:Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4102/1.

Crystallography of Kottenheimite

Crystal System:Hexagonal
Class (H-M):6/m - Dipyramidal
Space Group:P63/m
Cell Parameters:a = 11.1548(3) Å, c = 10.5702(3) Å
Ratio:a:c = 1 : 0.948
Unit Cell Volume:V 1,139.04 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
9.72 (100)
5.590 (69)
4.645 (26)
3.840 (54)
3.455 (21)
2.751 (34)
2.536 (27)
2.185 (30)

Chemical Properties of Kottenheimite

Formula:
Ca
 
3
Si(SO
 
4
)
 
2
(OH)
 
6
·12H
 
2
O
Simplified for copy/paste:Ca 3Si(SO4)2(OH)6·12H2O
Essential elements:Ca, H, O, S, Si
All elements listed in formula:Ca, H, O, S, Si

Relationship of Kottenheimite to other Species

Member of:Ettringite Group
Other Members of Group:

- +
Bentorite
Ca
 
6
(Cr
3+
 
,Al)
 
2
(SO
 
4
)
 
3
(OH)
 
12
· 26H
 
2
O
Buryatite
Ca
 
3
(Si,Fe,Al)(SO
 
4
)[B(OH)
 
4
]O(OH)
 
5
· 12H
 
2
O
Carraraite
Ca
 
3
(SO
 
4
)[Ge(OH)
 
6
](CO
 
3
) · 12H
 
2
O
Charlesite
Ca
 
6
(Al,Si)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH,O)
 
12
· 26H
 
2
O
Ettringite
Ca
 
6
Al
 
2
(SO
 
4
)
 
3
(OH)
 
12
· 26H
 
2
O
Hielscherite
Ca
 
3
Si(SO
 
4
)(SO
 
3
)(OH)
 
6
· 11H
 
2
O
Imayoshiite
Ca
 
3
Al(CO
 
3
)[B(OH)
 
4
](OH)
 
6
· 12H
 
2
O
Jouravskite
Ca
 
6
Mn
3+
2
(SO
 
4
,CO
 
3
)
 
3
(OH)
 
12
· 26H
 
2
O
Micheelsenite
(Ca,Y)
 
3
Al(HPO
 
4
,CO
 
3
)(CO
 
3
)(OH)
 
6
· 12H
 
2
O
Sturmanite
Ca
 
6
(Fe
3+
 
,Al,Mn
3+
 
)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH)
 
12
· 25H
 
2
O
Thaumasite
Ca
 
3
(SO
 
4
)[Si(OH)
 
6
](CO
 
3
) · 12H
 
2
O

Other Names for Kottenheimite

Synonyms:
IMA2011-038
Other Languages:

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 Kottenheimite

Reference List:

- +
Chukanov, N.V., Britvin, S.N., Zadov, A.E. and Van, K.V. (2011) Kottenheimite, IMA 2011-038. CNMNC Newsletter No. 10, October 2011, page 2557.

Internet Links for Kottenheimite

Search Engines:
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  • External Links:
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  • Look for Kottenheimite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Localities for Kottenheimite

    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.
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Mayen
          • Ettringen
            • Bellerberg volcano
    Chukanov, N.V., Britvin, S.N., Zadov, A.E. and Van, K.V. (2011) Kottenheimite, IMA 2011-038. CNMNC Newsletter No. 10, October 2011, page 2557; Blaß, G. & Kruijen, F. (2013): Die Mineralogischen Neuigkeiten aus der Vulkaneifel. Mineralien-Welt 24 (3), 33-41.
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