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Potassic-ferro-richterite

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Formula:
[K][CaNa][Fe
2+
5
]Si
 
8
O
 
22
(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.
Member of:Richterite Root Name Group > Sodium-Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
This page provides mineralogical data about Potassic-ferro-richterite.

Classification of Potassic-ferro-richterite

IMA status:Not Approved
mindat.org URL:http://www.mindat.org/min-39239.html
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Chemical Properties of Potassic-ferro-richterite

Formula:
[K][CaNa][Fe
2+
5
]Si
 
8
O
 
22
(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.
Simplified for copy/paste:[K][CaNa][Fe2+5]Si8O22(OH)2
Essential elements:Ca, Fe, H, K, Na, O, Si
All elements listed in formula:Ca, Fe, H, K, Na, O, Si

Relationship of Potassic-ferro-richterite to other Species

Member of:Richterite Root Name Group > Sodium-Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Other Members of Group:

- +
Ferro-fluoro-richterite
{Na}{CaNa}{Fe
2+
5
}(Si
 
8
O
 
22
)F
 
2
Ferro-richterite
{Na}{CaNa}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Fluoro-richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(F,OH)
 
2
Potassic-fluoro-richterite
{K}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(F,OH)
 
2
Potassic-richterite
K[CaNa][Mg
 
5
]Si
 
8
O
 
22
(OH)
 
2
Richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2

Other Information

Health Warning: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

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  • Localities for Potassic-ferro-richterite

    The 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. ? 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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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    Updated Mineral Entry: ScholziteFrom Van King, 29th Aug 2014 12:14:08