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Samuelsonite from
Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda


Locality type:Pegmatite
Classification
Species:Samuelsonite
Formula:(Ca,Ba)Ca8Fe22+Mn22+Al2(PO4)10(OH)2
Chemical Analyses:
Oxide wt%:
1
P2O542.00 %
Al2O36.00 %
Fe2O31.00 %
FeO7.00 %
MnO8.00 %
CaO26.00 %
Na2O0.00 %
K2O0.00 %
Li2O0.00 %
H2O+1.00 %
H2O-0.00 %
Insol0.00 %
Total:91.00 %
Sample references:
1 -
Fransolet, A.-M., von Knorring, O., Fontan, F. (1992) A new occurrence of samuelsonite in the Buranga Pegmatite, Rwanda. Bulletin of the Geological Society of Finland, 64 (1). 13-21 doi:10.17741/bgsf/64.1.002
Comments:Associated with lazulite-scorzalite series in trolleite.
Habit:fibrous
Colour:greenish yellow
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Samuelsonite data
Locality Data:Click here to view Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda
Data Identifiers
Mindat Occurrence Record ID:164642
Long-form Identifier:1:3:164642:9
GUID (UUID V4):0
References
von Knorring, O. (1972) Notes on phosphate minerals from Buranga pegmatite. 16th annual Report Res. Inst. afr. Geol., Univ. Leeds: 56-57.
von Knorring, O. (1973) Notes on pegmatite minerals from Rwanda, Uganda and South West Africa. 17th annual Report Res. Inst. afr. Geol., Univ. Leeds, 72-73.
Fransolet, A.-M., von Knorring, O., Fontan, F. (1992) A new occurrence of samuelsonite in the Buranga Pegmatite, Rwanda. Bulletin of the Geological Society of Finland, 64 (1). 13-21 doi:10.17741/bgsf/64.1.002
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
Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.
 
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