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Foordite from
Lutsiro, Rutsiro District, Western Province, Rwanda


Locality type:Occurrence
Classification
Species:Foordite
Formula:Sn2+Nb2O6
Chemical Analyses:
Oxide wt%:
1
SnO25.40 %
PbO6.00 %
Ta2O528.70 %
Nb2O540.10 %
Total:100.20 %
Sample references:
1 -
Uher, Pavel, Černý, Petr, Chapman, Ron (2008) Foordite-thoreaulite, Sn2+Nb2O6Sn2+Ta2O6: compositional variations and alteration products. European Journal of Mineralogy, 20 (4) 501-516 doi:10.1127/0935-1221/2008/0020-1845
Comments:Daltry and von Knorring (1998): "it occurs in contact with stannoan plumbomicrolite, cassiterite, ferro-columbite, staringite, and ixiolite. Foordite from Lutsiro is in fact a lead-bearing variety."
Colour:brownish yellow with a greenish tint
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Foordite data
Locality Data:Click here to view Lutsiro, Rutsiro District, Western Province, Rwanda
Data Identifiers
Mindat Occurrence Record ID:5363
Long-form Identifier:1:3:5363:1
GUID (UUID V4):0
References
Jambor, John L., Vanko, David A. (1990) New Mineral Names. American Mineralogist, 75 (5-6) 706-713 p.707
Daltry, V.D.C., von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15. https://popups.uliege.be/1374-8505/index.php?id=1593
Uher, Pavel, Černý, Petr, Chapman, Ron (2008) Foordite-thoreaulite, Sn2+Nb2O6Sn2+Ta2O6: compositional variations and alteration products. European Journal of Mineralogy, 20 (4) 501-516 doi:10.1127/0935-1221/2008/0020-1845
 
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