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Eckermannite Root Name

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About Eckermannite Root NameHide

Formula:
ANa2(Z2+4Al}Si8O22(OH,F,Cl)2
The eckermannite minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < Z(Al+Fe3++2Ti) < 1.5 apfu with Al as the dominant element. The individual members are defined by their dominant element in the A, Z2+(= IMA C2+) and W position.

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
Name:
For (Claes Walter) Harry von Eckermann (1886-1969), Swedish industrialist, mineralogist and petrologist.
This page provides mineralogical data about Eckermannite Root Name.


Chemical Properties of Eckermannite Root NameHide

Formula:
ANa2(Z2+4Al}Si8O22(OH,F,Cl)2

The eckermannite minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < Z(Al+Fe3++2Ti) < 1.5 apfu with Al as the dominant element. The individual members are defined by their dominant element in the A, Z2+(= IMA C2+) and W position.

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 Eckermannite Root NameHide

Crystal System:
Monoclinic

Relationship of Eckermannite Root Name to other SpeciesHide

Other Members of this group:
Arfvedsonite Root NameANa2(Z2+4Fe3+}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
Riebeckite Root Name◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2Mon.
Group Members:
Eckermannite NaNa2(Mg4Al}Si8O22(OH)2Mon. 2/m : B2/m
Ferro-eckermannite NaNa2(Fe2+4Al)Si8O22(OH)2Mon.
Ferro-fluoro-eckermannite NaNa2(Fe2+4Al}Si8O22F2
Fluoro-eckermannite NaNa2(Mg4Al}Si8O22F2
Mangano-ferri-eckermannite {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2Mon.
Potassic-eckermannite {K}{Na2}{Mg4Al}(Si8O22)(OH)2

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 Eckermannite 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 Eckermannite Root NameHide

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