Anhydrokainite (original) (raw)

A valid IMA mineral species - grandfathered - questionable

Name:

From "ANHYDRO" meaning without water and KAINITE in allusion to its composition and relationship to Kainite.

Formed by the dehydration of Kainite by basalt intrusion into the northern German salt deposits. However, according to Borisov et al. (2022), the dehydration of kainite, which is stable up to 190°C, resulted in the formation of the decomposition products K2Mg2(SO4)3, KCl and K2SO4.

Possibly the Mg analogue of belousovite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:235:0

IMA Classification of AnhydrokainiteHide

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Approved, 'Grandfathered' (first described prior to 1959), Questionable

Classification of AnhydrokainiteHide

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7.BC.80

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations

26.13

26 : Sulphates with Halide

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.

Chemistry of AnhydrokainiteHide

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Mindat Formula:

KMg(SO4)Cl

Geological EnvironmentHide

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Type Occurrence of AnhydrokainiteHide

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Other Language Names for AnhydrokainiteHide

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Related Minerals - Strunz-mindat GroupingHide

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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.

Internet Links for AnhydrokainiteHide

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References for AnhydrokainiteHide

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Reference List:

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.

Borisov, A., Siidra, O., Ugolkov, V., Kuznetsov, A., Firsova, V., Charkin, D., Platonova, N.V., Pekov, I. (2022). Complex hydrogen bonding and thermal behaviour over a wide temperature range of kainite KMg(SO4)Cl⋅2.75H2O. Mineralogical Magazine, 86(1), 37-48. doi:10.1180/mgm.2021.101

Localities for AnhydrokainiteHide

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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.