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Monazite-(La) from
Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí, Bolivia


Locality type:Mine
Classification
Species:Monazite-(La)
Formula:La(PO4)
Comments:Some collectors have assumed that Llallagua monazite is monazite-(La) on the basis of old wet-chemical analyses (Federico Ahlfeld, Gordon (1939), and others) showing slightly more La than Ce; but those analyses referred to GROUPS of rare earth elements rather than La and Ce individually, and a considerable amount of Nd was included in the "La". Several more recent microprobe analyses show Ce-dominance. (Alfredo Petrov)
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Monazite-(La) data
Locality Data:Click here to view Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí, Bolivia
Data Identifiers
Mindat Occurrence Record ID:66613
Long-form Identifier:1:3:66613:4
GUID (UUID V4):0
Nearest other occurrences of Monazite-(La)
76.2km (47.3 miles) ⓘSan José Mine, Oruro, Cercado Province, Oruro, Bolivia
References
(See comments above.)
 
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