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Potassic-ferro-richterite

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Formula:
[K][CaNa][Fe52+]Si8O22(OH)2
The richterite group minerals are defined as sodium-calcium amphiboles with 0,5 apfu < A(Na+K+ 2Ca) where Na or K is dominant, and with C(Al+Fe3++2Ti)<0,5 apfu. The W position may contain (OH),F or Cl.

Potassic-ferro-richterite is defined with
A position: K dominant
C position: Fe2+ dominant
W position: (OH) dominant.
This page provides mineralogical data about Potassic-ferro-richterite.

Classification of Potassic-ferro-richterite

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Chemical Properties of Potassic-ferro-richterite

Formula:
[K][CaNa][Fe52+]Si8O22(OH)2

The richterite group minerals are defined as sodium-calcium amphiboles with 0,5 apfu < A(Na+K+ 2Ca) where Na or K is dominant, and with C(Al+Fe3++2Ti)<0,5 apfu. The W position may contain (OH),F or Cl.

Potassic-ferro-richterite is defined with
A position: K dominant
C position: Fe2+ dominant
W position: (OH) dominant.
Essential elements:
All elements listed in formula:

Relationship of Potassic-ferro-richterite to other Species

Other Members of Group:
Ferro-fluoro-richterite{Na}{CaNa}{Fe52+}(Si8O22)F2
Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Potassic-fluoro-richterite{K}{CaNa}{Mg5}(Si8O22)(F,OH)2
Potassic-richteriteK[CaNa][Mg5]Si8O22(OH)2
Richterite{Na}{CaNa}{Mg5}(Si8O22)(OH)2

Other Information

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 Potassic-ferro-richterite

Reference List:
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Amphiboles of the Khibiny Alkaline Pluton, Kola Peninsula, Russia. Geology of Ore Deposits 50(8), 720-731.

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Internet Links for Potassic-ferro-richterite

Localities for Potassic-ferro-richterite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Nunavut Territory
    • Baffin Island
Hogarth (1997) Can. Min. 35, 53-78.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
          • Koashva Mt
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
Mineral and/or Locality  
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