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Riebeckite Root Name

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Formula:
◻[Na2][Z2+3Fe3+2]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.
Crystal System:
Monoclinic
This page provides mineralogical data about Riebeckite Root Name.


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Chemical Properties of Riebeckite Root NameHide

Formula:
◻[Na2][Z2+3Fe3+2]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.

Crystallography of Riebeckite Root NameHide

Crystal System:
Monoclinic

Other Language Names for Riebeckite Root NameHide

Varieties of Riebeckite Root NameHide

Cape AsbestosA variety of crocidolite occurring in narrow interbedded veins traversing the Griqua Town series of banded jaspers and ironstones in nGriqualand, Siouth Africa.
CrocidoliteA fibrous form of Riebeckite or Magnesioriebeckite.

Relationship of Riebeckite Root Name to other SpeciesHide

Other Members of this group:
Arfvedsonite Root NameANa2(Z2+4Fe3+}Si8O22(OH,F,Cl)2Mon.
Eckermannite Root NameANa2(Z2+4Al}Si8O22(OH,F,Cl)2Mon.
Glaucophane Root Name◻[Na2][Z2+3Al2]Si8O22(OH,F,Cl)2Mon.
Leakeite Root NameANa2(Z2+2Z3+2Li)(Si8O22)(OH,F,Cl)2
Nybøite Root NameANa2(Z2+3Z3+2)(AlSi7O22)(OH,F,Cl)2
Group Members:
Fluoro-riebeckite ◻{Na2}{Fe2+3Fe3+2}(Si8O22)F2
Magnesio-fluoro-riebeckite ◻{Na2}{Mg3Fe3+2}(Si8O22)F2
Magnesio-riebeckite ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2Mon.
Riebeckite ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2Mon. 2/m : B2/m

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.

Riebeckite Root Name in petrologyHide

References for Riebeckite Root NameHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.
Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.

Internet Links for Riebeckite Root NameHide

Localities for Riebeckite Root NameHide

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.

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