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Riebeckite Root Name

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Formula:
◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
The riebeckite minerals are sodium amphiboles defined with A(Na+K+2Ca)< 0.5 apfu and 1.5 apfu < Z(Al+Fe3++2Ti) with Fe3+ as the dominant element in the Z3+ position (=IMA C3+ position)

The individual minerals are defined by the dominant elements in the Z2+ and W positions. The most common dominant elements in the various positions are:
Z2+ position(=IMA C2+ position): Mg or Fe2+ dominant
W position: (OH) or F dominant

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
This page provides mineralogical data about Riebeckite Root Name.

Classification of Riebeckite Root Name

Approved 2012
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Chemical Properties of Riebeckite Root Name

Formula:
◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2

The riebeckite minerals are sodium amphiboles defined with A(Na+K+2Ca)< 0.5 apfu and 1.5 apfu < Z(Al+Fe3++2Ti) with Fe3+ as the dominant element in the Z3+ position (=IMA C3+ position)

The individual minerals are defined by the dominant elements in the Z2+ and W positions. The most common dominant elements in the various positions are:
Z2+ position(=IMA C2+ position): Mg or Fe2+ dominant
W position: (OH) or F dominant

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.

Relationship of Riebeckite Root Name to other Species

Other Members of Group:
Arfvedsonite Root NameANa2(Z42+Fe3+}Si8O22(OH,F,Cl)2
Eckermannite Root NameANa2(Z42+Al}Si8O22(OH,F,Cl)2
Glaucophane Root Name◻[Na2][Z32+Al2]Si8O22(OH,F,Cl)2
Leakeite Root NameANa2(Z22+Z23+Li)(Si8O22)(OH,F,Cl)2
Nybøite Root NameANa2(Z32+Z23+)(AlSi7O22)(OH,F,Cl)2
Group Members:
Fluoro-riebeckite ◻{Na2}{Fe32+Fe23+}(Si8O22)F2
Magnesio-fluoro-riebeckite ◻{Na2}{Mg3Fe23+}(Si8O22)F2
Magnesio-riebeckite ◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Riebeckite ◻[Na2][Fe32+Fe23+]Si8O22(OH)2

Other Names for Riebeckite Root Name

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 Riebeckite Root Name

Reference List:
Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles: Canadian Mineralogist:
44(1): 1-21.

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 Riebeckite Root Name

Localities for Riebeckite Root Name

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.
Mineral and/or Locality  
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