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(NH4)MgCl3 · 6H2O
Light yellow to colourless
Specific Gravity:
Crystal System:
After I.I. Redikortsev, discoverer of the Chelyabinsk coal basin.
Dimorph of:
An unapproved mineral (name not submitted). This compound does not qualify as a mineral species due to the anthropogenic factor (burning coal mines).

Originally described from Mine dump, Coal Mine No. 50, Chelyabinsk coal basin, Chelyabinsk Oblast', Urals Region, Russia.

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Classification of RedikortseviteHide

Unnamed (probably valid)
Approval History:
Unnamed, but probably valid.

C : Complex halides
J : With MX6 complexes; M = Fe, Mn, Cu

Physical Properties of RedikortseviteHide

Light yellow to colourless
2½ on Mohs scale
None Observed
1.43 g/cm3 (Measured)    

Optical Data of RedikortseviteHide


Chemical Properties of RedikortseviteHide

(NH4)MgCl3 · 6H2O

Crystallography of RedikortseviteHide

Crystal System:
Flattened, prismatic crystals

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.85 (50;220)
3.35 (100;040)
2.99 (50;222)
2.36 (50;400)

Related Minerals - Nickel-Strunz GroupingHide

3.CJ.05RinneiteK3Na[FeCl6]Trig. 3m (3 2/m) : R3c
3.CJ.10ErythrosideriteK2[Fe3+Cl5(H2O)]Orth. mmm (2/m 2/m 2/m) : Pnma
3.CJ.10Kremersite(NH4,K)2[Fe3+Cl5(H2O)]Orth. mmm (2/m 2/m 2/m)
3.CJ.15MitscherlichiteK2CuCl4 · 2H2OTet. 4/mmm (4/m 2/m 2/m)
3.CJ.30Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)Trig.

Other InformationHide

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 RedikortseviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chesnokov, B.V., L.F. Bazhenova, E.P. Shcherbakova, T.A. Michal, T.N. Deriabina (1988), New minerals from the burned dumps of the Chelyabinsk coal basin, in Mineralogy, technogenesis, and mineral-resource complexes of the Urals. Akad. Nauk SSSR-Uralskoe Otdel.: 5-31 (in Russian).
Jambor, John L. and Jacek Puziewicz (1993), New Mineral Names, American Mineralogist (1993): 78: 1108-1112.
Aufschluss (1996): 47: 41-48.
Stachowicz, M. et al.: (2011): Acta Crystallogr. A67, C573 (abs.) [http://scripts.iucr.org/cgi-bin/paper?a48050]

Internet Links for RedikortseviteHide

Localities for RedikortseviteHide

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.
  • Saxony
    • Vogtland
Aufschluss (1996): 47: 41-48.
  • Silesia
    • Upper Silesian Coal Basin
      • Rybnik Coal Area
        • Radlin
Łukasz Kruszewski (2012) Unique chloride assemblage of exhalative origin from burning coal-mining dump in Radlin (Rybnik Coal Area, S Poland). Mineralogical Society of Poland Special Papers 40
    • Wodzisław Śląski District
Kruszewski, Ł., Fabiańska, M.J., Ciesielczuk, J., Segit, T., Orłowski, R., Motyliński, R., Kusy, D., Moszumańska, I. (2018): First multi-tool exploration of a gas-condensate-pyrolysate system from the environment of burning coal mine heaps: An in situ FTIR and laboratory GC and PXRD study based on Upper Silesian materials. Science of the Total Environment: 640-641: 1044-1071
  • Chelyabinsk Oblast
    • Chelyabinsk coal basin
      • Kopeisk
Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
Chesnokov, B.V., L.F. Bazhenova, E.P. Shcherbakova, T.A. Michal, T.N. Deriabina (1988), New minerals from the burned dumps of the Chelyabinsk coal basin, in Mineralogy, technogenesis, and mineral-resource complexes of the Urals. Akad. Nauk SSSR-Uralskoe Otdel.: 5-31 (in Russian).
Mineral and/or Locality  
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