Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Merume river, Kamakusa, Mazaruni District, Guyanai
Regional Level Types
Merume riverRiver
Kamakusa- not defined -
Mazaruni DistrictDistrict
GuyanaCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Merume Rive / Director Creek Area, Guiana (Guyana)

Merume river, Kamakusa, Mazaruni District, Guyana
Merume River Area, Guiana (Guyana)

Merume river, Kamakusa, Mazaruni District, Guyana
Latitude & Longitude (WGS84): 5° 16' North , 59° 50' West
Latitude & Longitude (decimal): 5.26667,-59.83333
GeoHash:G#: d8vmyqy8w
Locality type:River
Köppen climate type:Af : Tropical rainforest climate


Original locality for Merumite. Merumite [Am. Mineral., 34, 339(1949)] was shown by Milton, et al. (1967) to consist of fine-grained intergrowths predominantly of eskolaite (Cr2O3), quartz, and occasionally with 4 new minerals. Most tested specimens of merumite are virtually all eskolaite (Tony Nikischer, 2012, personal communication). Merumite occurs as black rounded grains in alluvial gravels of the drainage basin of the Merume River, Guyana.

Regions containing this locality

South America PlateTectonic Plate
South AmericaContinent
Amazonian Craton, South AmericaCraton

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

11 valid minerals. 4 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
Bracewellite (TL)4.FD.10CrO(OH)
Eskolaite4.CB.05Cr2O3
Gahnite4.BB.05ZnAl2O4
Grimaldiite (TL)4.FE.20CrO(OH)
Guyanaite (TL)4.FD.10CrO(OH)
Mcconnellite (TL)4.AB.15CuCrO2
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 9 - Silicates
Pyrophyllite9.EC.10Al2Si4O10(OH)2
Topaz9.AF.35Al2(SiO4)(F,OH)2
Unclassified Minerals, Rocks, etc.
'Merumite' (TL)-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 4 - SIMPLE OXIDES
A2X3
Eskolaite4.3.1.3Cr2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Bracewellite (TL)6.1.1.5CrO(OH)
Grimaldiite (TL)6.1.5.1CrO(OH)
Guyanaite (TL)6.1.2.3CrO(OH)
Group 7 - MULTIPLE OXIDES
ABX2
Mcconnellite (TL)7.1.1.2CuCrO2
AB2X4
Gahnite7.2.1.4ZnAl2O4
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Pyrophyllite71.2.1.1Al2Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Merumite' (FRL)-
Quartz
var: Jasper
-SiO2

List of minerals for each chemical element

HHydrogen
H BracewelliteCrO(OH)
H GrimaldiiteCrO(OH)
H GuyanaiteCrO(OH)
H PyrophylliteAl2Si4O10(OH)2
H TopazAl2(SiO4)(F,OH)2
OOxygen
O BracewelliteCrO(OH)
O GrimaldiiteCrO(OH)
O GuyanaiteCrO(OH)
O McconnelliteCuCrO2
O EskolaiteCr2O3
O QuartzSiO2
O PyrophylliteAl2Si4O10(OH)2
O TopazAl2(SiO4)(F,OH)2
O GahniteZnAl2O4
FFluorine
F TopazAl2(SiO4)(F,OH)2
AlAluminium
Al PyrophylliteAl2Si4O10(OH)2
Al TopazAl2(SiO4)(F,OH)2
Al GahniteZnAl2O4
SiSilicon
Si QuartzSiO2
Si PyrophylliteAl2Si4O10(OH)2
Si TopazAl2(SiO4)(F,OH)2
CrChromium
Cr BracewelliteCrO(OH)
Cr GrimaldiiteCrO(OH)
Cr GuyanaiteCrO(OH)
Cr McconnelliteCuCrO2
Cr EskolaiteCr2O3
CuCopper
Cu McconnelliteCuCrO2
ZnZinc
Zn GahniteZnAl2O4
AgSilver
Ag SilverAg
AuGold
Au GoldAu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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. Geol. Surv. Prof. Paper 887, 1-29 + 6 plates.

Localities in this Region
Show map


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 19, 2019 21:06:46 Page generated: January 5, 2019 18:24:46
Go to top of page