Ikorskyite (original) (raw)

A valid IMA mineral species

Formula:

KMn3+(Si4O10) · 3H2O

Crystal System:

Monoclinic

Name:

Named in honour of Serafim Veniaminovich Ikorsky (1927-2016), a well-known specialist in the field of organic matter and gases research of the Kola alkaline province.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:470479:5

cb375281-49b1-4f64-adc8-b3cf6e4bfeec

IMA Classification of IkorskyiteHide

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Type description reference:

Yakovenchuk, V.N., Panikorovskii, T.L., Konopleva, N.G., Pakhomovsky, Ya.A., Savchenko, Y.E., Mikhailova, J., Bocharov, V., Spiridonova, D.V., Krivovichev, S.V. (2024): Ikorskyite KMn3+(Si4O10)·3H2O – new mineral from Khibiny Alkaline Massif (Kola Peninsula, Russia). Zapiski RMO (Proceedings of the Russian Mineralogical Society), 153(1), 61-72.

Classification of IkorskyiteHide

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9.EE.20

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands

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.

Physical Properties of IkorskyiteHide

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Density:

2.43(2) g/cm3 (Measured) 2.525 g/cm3 (Calculated)

Optical Data of IkorskyiteHide

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RI values:

_n_α = 1.575(5) _n_β = 1.580(5)

δ = 1.575

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

Dispersion:

no dispersion seen

Pleochroism:

Non-pleochroic

Comments:

Only two RI given

Chemistry of IkorskyiteHide

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Mindat Formula:

KMn3+(Si4O10) · 3H2O

Crystallography of IkorskyiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 5.0339(4) Å, b = 8.2329(7) Å, c = 13.3484(10) Å
β = 93.953(7)°

Ratio:

a:b:c = 0.611 : 1 : 1.621

Unit Cell V:

551.89 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

From Type Description.

Type Occurrence of IkorskyiteHide

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General Appearance of Type Material:

Ikorskiite forms radiant aggregates (up to 200 μm in diameter) of long-prismatic crystals (up to 30 × 3 × 3 μm) growing on romanechite and sometimes on quartz crystals.

Place of Conservation of Type Material:

Type material is deposited in the collections of the Mineralogical Museum, St. Petersburg State University, 7-9 Universitetskaya Emb., St. Petersburg 199034, Russia, catalogue number 1/19651, and the Geological and the Mineralogical Museum, Kola Science Centre of Russian Academy of Sci- ences, 14 Fersman Street, Apatity 184200, Russia, catalogue number 7538

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Synonyms of IkorskyiteHide

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Relationship of Ikorskyite to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of IkorskyiteHide

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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 IkorskyiteHide

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References for IkorskyiteHide

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Reference List:

Yakovenchuk, V.N., Panikorovskii, T.L., Konopleva, N.G., Pakhomovsky, Ya.A., Savchenko, Y.E., Mikhailova, J., Bocharov, V., Spiridonova, D.V., Krivovichev, S.V. (2024): Ikorskyite KMn3+(Si4O10)·3H2O – new mineral from Khibiny Alkaline Massif (Kola Peninsula, Russia). Zapiski RMO (Proceedings of the Russian Mineralogical Society), 153(1), 61-72.(DOI gives error number)

Localities for IkorskyiteHide

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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.