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Chlorkyuygenite

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Formula:
Ca12Al14O32[(H2O)4Cl2]
Colour:
Colourless
Lustre:
Vitreous
Hardness:
5 - 5½
Specific Gravity:
2.941 (Calculated)
Crystal System:
Isometric
Name:
Originally named simply kyuygenite for the Kyuygen-Kaya Mountain in the northern part of the Upper Chegem caldera, the type locality. It was renamed to chlorkyuygenite in 2013 by the IMA (IMA 13-C).
Originally named kyuygenite (renamed in 2013 - IMA 13-C).
A H2O-bearing analogue of chlormayenite. At the Upper Chegem volcanic caldera Chlorkyuygenite crystallized initially as chlormayenite, which later was altered under influence of volcanic gases containing water vapour.


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Classification of ChlorkyuygeniteHide

Notes:
Published without approval
Approval History:
Published without approval: 2013

Physical Properties of ChlorkyuygeniteHide

Vitreous
Comment:
Strong vitreous lustre
Colour:
Colourless
Comment:
Occasionally with a greenish or yellowish tint
Streak:
White
Hardness:
5 - 5½ on Mohs scale
Hardness:
VHN50=632(37) kg/mm2 - Vickers
Density:
2.941 g/cm3 (Calculated)

Optical Data of ChlorkyuygeniteHide

Type:
Isotropic
RI values:
n = 1.672(1)
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
High
Type:
Isotropic

Chemical Properties of ChlorkyuygeniteHide

Formula:
Ca12Al14O32[(H2O)4Cl2]
Common Impurities:
Fe(III),Si,Ti

Crystallography of ChlorkyuygeniteHide

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Cell Parameters:
a = 12.0285(1) Å, c = 12.0285 Å
Ratio:
a:c = 1 : 1
Unit Cell V:
1740.34 ų
Z:
3
Morphology:
Rounded grains and crystals with tris-tetrahedral form (up to 50μm); Aggregates up to 100–150μm in size. Forms rims on wadalite crystals.
Comment:
I -4 3d

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.911(31)
3.215(15)
3.007(38)
2.690(100)
2.455(46)
2.196(21)
1.668(26)
1.607(30)
Comments:
From Type Description.

First Recorded Occurrence of ChlorkyuygeniteHide

General Appearance of First Recorded Material:
Rounded grains and crystals with tris-tetrahedral form (up to 50μm) and aggregates up to 100–150μm in size enclosed in chegemite, reinhardbraunsite and srebrodolskite.
Place of Conservation of First Recorded Material:
Naturhistorisches Museum, Bern, Switzerland, registration number NMBE 41538
Geological Setting of First Recorded Material:
Ca-humite zones of calcareous skarn xenoliths in ignimbrites in the Upper Chegem volcanic caldera, Kabardino-Balkaria, North Caucasus, Russia (43º17’N 43º6’E)
Associated Minerals at First Recorded Locality:

Synonyms of ChlorkyuygeniteHide

Relationship of Chlorkyuygenite to other SpeciesHide

Other Members of this group:
ChlormayeniteCa12Al14O32[◻4Cl2]Iso. 4 3m : I4 3d
FluorkyuygeniteCa12Al14O32[(H2O)4F2]Iso. 4 3m : I4 3d
FluormayeniteCa12Al14O32F2Iso. 4 3m : I4 3d

Other InformationHide

Notes:
Raman bands [cm-1]: 202, 321, 511, 705, 776, 881; 3400-3200: H2O
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 ChlorkyuygeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Galuskin, E.V., Galuskina, I.O., Kusz, J., Armbruster, T., Bailau, R., Dulski, M., Gazeev, V.M., Pertsev, N.N., Zadov, A.E. and Dzierz˙anowski, P. (2013) Kyuygenite, IMA 2012-046. CNMNC Newsletter No. 15, February 2013, page 2. Mineralogical Magazine: 77: 1-12.
Galuskin, E.V., Galuskina, I.O., Kusz, J., Gfeller, F., Armbruster, T., Bailau, R., Dulski, M., Gazeev, V.M., Pertsev, N.N., Zadov, A.E., Dzieržanowski, P. (2015) Mayenite supergroup, part II: Chlorkyuygenite from Upper Chegem, northern Caucasus Kabardino-Balkaria, Russia, a new microporous mayenite supergroup mineral with “zeolitic” H2O. European Journal of Mineralogy: 27: 113-122.

Internet Links for ChlorkyuygeniteHide

Localities for ChlorkyuygeniteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia
 
  • Northern Caucasus Region
    • Kabardino-Balkarian Republic
      • Baksan Valley
Galuskin, E.V., Galuskina, I.O., Kusz, J., Armbruster, T., Bailau, R., Dulski, M., Gazeev, V.M., Pertsev, N.N., Zadov, A.E. and Dzierz˙anowski, P. (2013) Kyuygenite, IMA 2012-046. CNMNC Newsletter No. 15, February 2013, page 2; Mineralogical Magazine, 77, 1-12.; Galuskin, E.V., Galuskina, I.O., Kusz, J., Gfeller, F., Armbruster, T., Bailau, R., Dulski, M., Gazeev, V.M., Pertsev, N.N., Zadov, A.E., Dzieržanowski, P. (2015): Mayenite supergroup, part II: Chlorkyuygenite from Upper Chegem, northern Caucasus Kabardino-Balkaria, Russia, a new microporous mayenite supergroup mineral with “zeolitic” H2O. European Journal of Mineralogy. 27, 113-122
          • Lakargi Mt.
Galuskin, E.V., Galuskina, I.O., Kusz, J., Gfeller, F., Armbruster, T., Bailau, R., Dulski, M., Gazeev, V.M., Pertsev, N.N., Zadov, A.E., Dzieržanowski, P. (2015): Mayenite supergroup, part II: Chlorkyuygenite from Upper Chegem, northern Caucasus Kabardino-Balkaria, Russia, a new microporous mayenite supergroup mineral with “zeolitic” H2O. European Journal of Mineralogy. 27, 113-122
Mineral and/or Locality  
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