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|Name:||From the Merume river, Guyana.|
|A Mixture Of:||Bracewellite, Eskolaite, Grimaldiite, Guyanaite, Mcconnellite|
Originally described as"Cr2O3.H2O" [American Mineralogist, 34, 339 (1949)], but now known to be mostly eskolaite, intergrown with varying proportions of four other fine-grained chromium minerals. Occurs as hard black pebbles in river placers.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.