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Magnesio-arfvedsonite from
Coyote Peak, Humboldt County, California, USA


Locality type:Peak
Classification
Species:Magnesio-arfvedsonite
Formula:NaNa2(Mg4Fe3+)(Si8O22)(OH)2
Chemical Analyses:
Oxide wt%:
1
SiO255.29 %
Al2O30.21 %
TiO21.86 %
Fe2O33.77 %
FeO10.52 %
MnO0.25 %
MgO14.02 %
CaO2.56 %
Na2O7.74 %
K2O2.00 %
Li2O0.05 %
F1.43 %
H2O1.21 %
O=F-0.60 %
Total:100.31 %
Empirical formulas:
1(Na0.569K0.369)0.938 (Na1.603Ca0.397)2(Mg3.025Feii1.273FeIII0.411Ti0.202Al0.036Mnii0.031Li0.029)5.007Si8.002O22 ((OH)1,168F0,655O0.168)2
Sample references:
1760
Hawthorne, Frank C., Oberti, R., Zanetti, A., Czamanske, G. K. (1998) The role of Ti in hydrogen-deficient amphiboles: sodic-calcic and sodic amphiboles from Coyote Peak, California. The Canadian Mineralogist, 36 (5). 1253-1265
Comments:Titanian material.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesio-arfvedsonite data
Locality Data:Click here to view Coyote Peak, Humboldt County, California, USA
Data Identifiers
Mindat Occurrence Record ID:686492
Long-form Identifier:1:3:686492:7
GUID (UUID V4):0
References
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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