Kottenheimite (original) (raw)

A valid IMA mineral species

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About KottenheimiteHide

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Formula:

Ca 3Si(SO4)2(OH)6 · 12H2O

Name:

Named for the community Kottenheim, located near Mayen and the Bellerberg volcano, Germany.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:42534:8

6960675e-4b0d-4145-9e73-5d4f20591fef

IMA Classification of KottenheimiteHide

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IMA Formula:

Ca3Si(SO4)2(OH)6 · 12H2O

Type description reference:

Chukanov, N. V., Britvin, S. N., Van, K. V., Mockel, S., Zadov, A. E. (2012) Kottenheimite, Ca3Si(OH)6(SO4)2·12H2O, a new member of the ettringite group from the Eifel area, Germany. The Canadian Mineralogist, 50 (1) 55-63 doi:10.3749/canmin.50.1.55

Classification of KottenheimiteHide

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7.DG.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol Source Reference
Khm IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of KottenheimiteHide

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Comment:

vitreous in separate crystals and silky in aggregates

Fracture:

Irregular/Uneven

Density:

1.92(2) g/cm3 (Measured) 1.93 g/cm3 (Calculated)

Optical Data of KottenheimiteHide

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RI values:

_n_ω = 1.490(2) _n_ε = 1.477(2)

δ = 0.013

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of KottenheimiteHide

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Mindat Formula:

Ca 3Si(SO4)2(OH)6 · 12H2O

Crystallography of KottenheimiteHide

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Class (H-M):

6/m - Dipyramidal

Cell Parameters:

a = 11.1548(3) Å, c = 10.5702(3) Å

Crystal StructureHide

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ID Species Reference Link Year Locality Pressure (GPa) Temp (K)
0019043 Kottenheimite Chukanov N V, Britvin S N, Van K V, Mockel S, Zadov A E (2012) Kottenheimite, Ca3Si(OH)6(SO4)2*12H2O, a new member of the ettringite group from the Eifel area, Germany Rhineland-Palatinate, Germany The Canadian Mineralogist 50 55-63 2012 Bellerberg, near Kottenheim, Eastern Eifel area, 0 293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
9.72 Å (100)
5.590 Å (69)
4.645 Å (26)
3.840 Å (54)
3.455 Å (21)
2.751 Å (34)
2.536 Å (27)
2.185 Å (30)

Geological EnvironmentHide

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Type Occurrence of KottenheimiteHide

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General Appearance of Type Material:

Snow-white radiating and random aggregates of hair-like subparallel clusters to 0.2 mm.

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.

Geological Setting of Type Material:

Late hydrothermal assemblage related to alkali olivine basalt.

Reference:

Chukanov, N.V., Britvin S.N., Van, K.V., Möckel, S., Zadov, A.E. (2012) Kottenheimite, Ca3Si(OH)6(SO4)2·12H2O, a new member of the ettringite group from the Eifel area, Germany. The Canadian Mineralogist: 50: 55-63.

Synonyms of KottenheimiteHide

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Relationship of Kottenheimite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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7.DG. Mathesiusite K5(UO2)4(SO4)4(VO5) · 4H2O Tet. 4/m : _P_4/n
7.DG.05 Darapskite Na3(SO4)(NO3) · H2O Mon. 2/m : _P_21/m
7.DG.10 Clinoungemachite (Na, K, Fe, SO4) Mon. 2/m
7.DG.10 Humberstonite Na7K3Mg2(SO4)6(NO3)2 · 6H2O Trig. 3 : _R_3
7.DG.10 Ungemachite K3Na8Fe(SO4)6(NO3)2 · 6H2O Trig. 3 : _R_3
7.DG.15 Bentorite Ca6Cr2(SO4)3(OH)12 · 26H2O Trig. 3_m_ : P_31_c
7.DG.15 Charlesite Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O Trig. 3_m_ : P_31_c
7.DG.15 Ettringite Ca6Al2(SO4)3(OH)12 · 26H2O Trig. 3_m_ : P_31_c
7.DG.15 Jouravskite Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O Hex. 6 : _P_63
7.DG.15 Sturmanite Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O Trig. 3_m_ : P_31_c
7.DG.15 Thaumasite Ca3(SO4)[Si(OH)6](CO3) · 12H2O Hex. 6 : _P_63
7.DG.15 Carraraite Ca3(SO4)[Ge(OH)6](CO3) · 12H2O Hex.
7.DG.15 Buryatite Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O Trig. 3_m_ : P_31_c
7.DG.15 Birunite Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?)
7.DG.15 Hielscherite Ca3Si(SO4)(SO3)(OH)6 · 11H2O Hex. 6 : _P_63
7.DG.15 Imayoshiite Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O Hex. 6 : _P_63
7.DG.15 Tatarinovite Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O Hex. 6 : _P_63
7.DG.15 Siwaqaite Ca6Al2(CrO4)3(OH)12 · 26H2O Trig. 3_m_ : P_31_c
7.DG.15 Chiyokoite Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O Hex. 6 : _P_63
7.DG.20 Rapidcreekite Ca2(SO4)(CO3) · 4H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n
7.DG.25 Tatarskite Ca6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O Orth.
7.DG.30 Nakauriite Cu8(SO4)4(CO3)(OH)6 · 48H2O Orth.
7.DG.35 Chessexite (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O Orth.
7.DG.40 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O Trig. 3_m_ _(_32/m ) : _P_3_c_1
7.DG.40 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2O Trig. 3_m_ _(_32/m ) : _P_3_c_1
7.DG.45 Chelyabinskite (Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?) Orth.
7.DG.55 Ramazzoite [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36] Iso. 43_m_ : P_43_m
7.DG.60 Witzkeite Na4K4Ca(NO3)2(SO4)4 · 2H2O Mon. 2/m : _B_2/b

Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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References for KottenheimiteHide

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Reference List:

Chukanov, N. V., Britvin, S. N., Van, K. V., Mockel, S., Zadov, A. E. (2012) Kottenheimite, Ca3Si(OH)6(SO4)2·12H2O, a new member of the ettringite group from the Eifel area, Germany. The Canadian Mineralogist, 50 (1) 55-63 doi:10.3749/canmin.50.1.55

Campostrini,I., Di Domenico,D., Demartin,F., Russo,M. (2018) Kottenheimite,Ca3Si(SO4)2(OH)6 .12H2 0, della cava Montenero di Onano (Viterbo,Lazio): secondo ritrovamento mondiale. Micro (Associazione Micromineralogica Italiana), 16 (1) 38-43

Localities for KottenheimiteHide

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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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

France
Occitanie Aveyron Rodez Sévérac-d'Aveyron ⓘ Lapanouse-de-Sévérac slag locality publication date: November 2018 +1 other reference
Germany (TL)
Rhineland-Palatinate Mayen-Koblenz Vordereifel Ettringen ⓘ Caspar quarry (TL) Williams et al. (2011) +2 other references
Italy
Lazio Viterbo Province Onano ⓘ Montenero Quarry Campostrini et al. (2018)