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Merume River, Rest of Region 8, Potaro-Siparuni Region, Guyanai
| Regional Level Types | |
|---|---|
| Merume River | River |
| Rest of Region 8 | Municipality |
| Potaro-Siparuni Region | Region |
| Guyana | Country |
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Latitude & Longitude (WGS84):
5° 16' 0'' North , 59° 49' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The Merume River is a river of Guyana, a tributary of the Kamarang River.
Merume is also the name of a nearby mountain, which is 30 miles (ca. 48 km) east of Mount Roraima. Director Creek is a tributary of Merume River. First Falls is a feature of the river which also limits travel by boat.
Kamakusa was a settlement along the river, and formerly a government center.
Original locality for Merumite.
Merumite was originally listed in American Mineralogist: 34(3-4): 339 as a new mineral name (see http://www.minsocam.org/ammin/AM34/AM34_339.pdf)
In 1967 Milton et al. showed it to consist of fine-grained intergrowths predominantly of eskolaite (Cr2O3), quartz, and occasionally with 4 new minerals (bracewellite, grimaldiite, guyanaite and mcconnellite, see https://pubs.usgs.gov/publication/pp887)
Note: 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.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
11 valid minerals. 4 (TL) - type locality of valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Bracewellite (TL) Formula: CrO(OH) Type Locality: Description: River gravels. |
| ⓘ Eskolaite Formula: Cr2O3 |
| ⓘ Gahnite Formula: ZnAl2O4 |
| ⓘ Grimaldiite (TL) Formula: CrO(OH) Type Locality: Description: River gravels. |
| ⓘ Guyanaite (TL) Formula: CrO(OH) Type Locality: Description: River gravels. |
| ⓘ Mcconnellite (TL) Formula: CuCrO2 Type Locality: Description: River gravels. References: |
| ⓘ 'Merumite' References: |
| ⓘ Native Gold Formula: Au |
| ⓘ Native Silver Formula: Ag |
| ⓘ Pyrophyllite Formula: Al2Si4O10(OH)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Mcconnellite (TL) | 4.AB.15 | CuCrO2 |
| ⓘ | Gahnite | 4.BB.05 | ZnAl2O4 |
| ⓘ | Eskolaite | 4.CB.05 | Cr2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Bracewellite (TL) | 4.FD.10 | CrO(OH) |
| ⓘ | Guyanaite (TL) | 4.FD.10 | CrO(OH) |
| ⓘ | Grimaldiite (TL) | 4.FE.20 | CrO(OH) |
| Group 9 - Silicates | |||
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
| ⓘ | Pyrophyllite | 9.EC.10 | Al2Si4O10(OH)2 |
| Unclassified | |||
| ⓘ | 'Merumite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Bracewellite | CrO(OH) |
| H | ⓘ Grimaldiite | CrO(OH) |
| H | ⓘ Guyanaite | CrO(OH) |
| H | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | Oxygen | |
| O | ⓘ Bracewellite | CrO(OH) |
| O | ⓘ Eskolaite | Cr2O3 |
| O | ⓘ Gahnite | ZnAl2O4 |
| O | ⓘ Grimaldiite | CrO(OH) |
| O | ⓘ Guyanaite | CrO(OH) |
| O | ⓘ Mcconnellite | CuCrO2 |
| O | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| F | Fluorine | |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Al | Aluminium | |
| Al | ⓘ Gahnite | ZnAl2O4 |
| Al | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | Silicon | |
| Si | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Cr | Chromium | |
| Cr | ⓘ Bracewellite | CrO(OH) |
| Cr | ⓘ Eskolaite | Cr2O3 |
| Cr | ⓘ Grimaldiite | CrO(OH) |
| Cr | ⓘ Guyanaite | CrO(OH) |
| Cr | ⓘ Mcconnellite | CuCrO2 |
| Cu | Copper | |
| Cu | ⓘ Mcconnellite | CuCrO2 |
| Zn | Zinc | |
| Zn | ⓘ Gahnite | ZnAl2O4 |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Merume_River |
|---|---|
| Wikidata ID: | Q6820781 |
Other Regions, Features and Areas containing this locality
South AmericaContinent
South America PlateTectonic Plate
- Amazonian CratonCraton
- Maroni-Itacaiunas BeltShield
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
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Merume River, Rest of Region 8, Potaro-Siparuni Region, Guyana