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Ca3Si(SO4)2(OH)6 · 12H2O
Named for the community Kottenheim, located near Mayen and the Bellerberg volcano.
Closely related to hielscherite.

Classification of Kottenheimite

Approval Year:

Chemical Properties of Kottenheimite

IMA Formula:
Ca3Si(SO4)2(OH)6 · 12H2O
Elements listed in formula:

Crystallography of Kottenheimite

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

Type Occurrence of Kottenheimite

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.

Relationship of Kottenheimite to other Species

Other Members of Group:
BentoriteCa6(Cr3+,Al)2(SO4)3(OH)12 · 26H2O
BuryatiteCa3(Si,Fe,Al)(SO4)[B(OH)4]O(OH)5 · 12H2O
CarraraiteCa3(SO4)[Ge(OH)6](CO3) · 12H2O
CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O
EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
HielscheriteCa3Si(SO4)(SO3)(OH)6 · 11H2O
ImayoshiiteCa3Al(CO3)[B(OH)4](OH)6 · 12H2O
JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2O
Micheelsenite(Ca,Y)3Al(HPO4,CO3)(CO3)(OH)6 · 12H2O
SturmaniteCa6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2O
ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2O

Other Names for Kottenheimite

Name in Other Languages:

Other Information

Health Risks:
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 URL:
Please feel free to link to this page.

Localities for Kottenheimite

This 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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
  • 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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