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Merumite
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Name:
From the Merume river, Guyana.
First Recorded Locality:
A Mixture Of:
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. It is important to note that while merumite grains (which are known up to 8 cm in diameter) are currently unknown as a pure species, most grains rarely have more than a few species intergrown, including quartz, gold, pyrophyllite, gahnite, eskolaite, and sometimes other species the locality is known for. Fraudulently labeled specimens are more commonly known than verified specimens.
Unique Identifiers
Mindat ID:
42905
Long-form identifier:
mindat:1:1:42905:2
Similar Names
First Recorded Occurrence of Merumite
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Merumite
mindat.org URL:
https://www.mindat.org/min-42905.html
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References for Merumite
Reference List:
Milton, C., Appleman, D. E., Appleman, M. H., Chao, E. C. T., Cuttitta, F., Dinnin, J. I., Dwornik, E. J., Ingram, B. L. and Rose, H. J., Jr. (1976) Merumite, a complex assemblage of chromium minerals from Guyana. U.S. Geological Survey Professional Paper 887: 1-29.Abs. in: American Mineralogist (1977), 62, 593.
Localities for Merumite
Showing 2 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Guyana (FRL) | |
| Milton et al. (1976) |
| Am. Mineral. et al. (1949) +1 other reference |
