Merume River

	Merume River 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 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. Merumite was discovered in 1937 appearing as black grains among diamonds and gold in the river gravel. In 1958, merumite was determined to be a complex aggregate of eskolaite and chromium, X-ray diffraction data showed it contained eskolaite, guyanaite, bracewellite, grimaldiite, and mcconnellite. Kamakusa was a settlement along the river, and formerly a government center. See also List of rivers of Guyana This is a list of rivers in Guyana. By drainage basin This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name. Atlantic Ocean ''Amazon River'' (Brazil) ''Negro River'' (Brazil) ''Branc ... References Bibliography Rand McNally, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the Atlantic Ocean to the north, Brazil to the south and southwest, Venezuela to the west, and Suriname to the east. With , Guyana is the third-smallest sovereign state by area in mainland South America after Uruguay and Suriname, and is the second-least populous sovereign state in South America after Suriname; it is also one of the least densely populated countries on Earth. It has a wide variety of natural habitats and very high biodiversity. The region known as "the Guianas" consists of the large shield landmass north of the Amazon River and east of the Orinoco River known as the "land of many waters". Nine indigenous tribes reside in Guyana: the Wai Wai, Macushi, Patamona, Lokono, Kalina, Wapishana, Pemon, Akawaio and Warao. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Kamarang River Kamarang River is a river in Venezuela and Guyana, and a part of the Essequibo River basin. Route The river originates in Venezuela where it is called Río Camarán or Río Camurán. Its source is located right next to the Troncal 10, in the middle of the Gran Sabana region. The nascent river first flows in parallel to the road in a southeasterly direction. It then passes the road a few meters after the Campamento Kamoiran. Here the river forms the Kamoiran rapids. Its course then turns more eastward for several kilometers through open Savannah. Shortly after entering the disputed Guayana Esequiba territory in Guyana the river drops roughly 160 meters at the impressive Kamarang falls creating a 40 meter wide water curtain. The Kamarang River then flows through a deep forested gorge first north-, then eastbound. This area is very remote and inhabited by the Arecuna people and rarely visited as it is difficult to access from both Guyana and Venezuela. The river then flows east th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Mount Roraima Mount Roraima ( es, Monte Roraima; Tepuy Roraima; Cerro Roraima pt, Monte Roraima ) is the highest of the Pakaraima chain of tepuis (table-top mountain) or plateaux in South America. It is located at the junction of Venezuela, Brazil and Guyana. A characteristic large flat-topped mountain surrounded by cliffs 400 to 1,000 meters high. The highest point of Mount Roraima is located on the southern edge of the cliff at an altitude of 2,810 meters in Venezuela, and another protrusion at an altitude of 2,772 meters at the junction of the three countries in the north of the plateau is the highest point in Guyana. The name of Mount Roraima came from the native Pemon people. ''Roroi'' in the Pemon language means "blue-green", and ''ma'' means "great". Leaching caused by intense rainfall has shaped the peculiar topography of the summit, and the geographical isolation of Mount Roraima has made it home to much endemic flora and fauna. Western exploration of Mount Roraima did not begin until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Eskolaite Eskolaite is a rare chromium oxide mineral (chromium(III) oxide Cr2O3). Discovery and occurrence It was first described in 1958 for an occurrence in the Outokumpu ore deposit of eastern Finland. It occurs in chromium bearing tremolite skarns, metamorphosed quartzites and chlorite bearing veins in Finland; in glacial boulder clays in Ireland and in stream pebbles in the Merume River of Guyana. It has also been recognized as a rare component in chondrite meteorites. The mineral is named after the Finnish geologist Pentti Eskola (1883–1964). Structure and physical properties Eskolaite crystallizes with trigonal symmetry in the space group ''R'c'' and has the lattice parameters a = 4.95 Å and c = 13.58 Å at standard conditions. The unit cell contains six formula units. The lattice is analogous to that of corundum, with Cr3+ replacing Al3+. See also * List of minerals named after people This is a list of minerals named after people. The chemical composition follows name. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Guyanaite Guyanaite (CrOOH) is a chromium oxide mineral that forms as an intergrowth with other chromium oxide minerals known as bracewellite (CrOOH) and grimaldiite (CrOOH) as well as eskolaite (Cr2O3) which in early findings were nearly indistinguishable from one another. These oxides formed so closely as intergrowths with one another that they were initially, and erroneously, identified as a single definite mineral previously known as merumite.Milton, C. & Narain, S. (1969): Merumite occurrence in Guyana. Econ. Geol., 64, 910–914. Because of its complex history and the previously undiscovered nature of these chromium oxide polymorphs, the relevance of any information found in many early experiments involving the mineral formerly known as merumite in regard to guyanaite is unknownTombs, N.C., Croft, W.J., Carter, J.R., Fitzgerald, J.F. (1964): A new polymorph of CrOOH. Inorg. Chem., 3, 1791–1792. and it is implied that in any further reference of merumite it will have been composed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	List Of Rivers Of Guyana This is a list of rivers in Guyana. By drainage basin This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name. Atlantic Ocean ''Amazon River'' (Brazil) ''Negro River'' (Brazil) ''Branco River'' (Brazil) Takutu River **Ireng River Courantyne River Kutari River Coeroeni River New River (South America) Oronoque River Berbice River *Canje River Abary River Mahaicony River Mahaica River Demerara River Haiama River Haianari Creek Haiakwa Creek Kuruabaru River Madawini Kamuni Hauraruni Tenabu Madabadeen Essequibo River Mazaruni River * Kako River *Kukui * Kamarang River **Eping River Issineru River Meamu River Kurupung River Merume River * Puruni River Cuyuni River Akarabisi Arimu River * Ekereku River *Iroma Akarabisi Kopang Oko River Wenamu River Akaiwang River Potaro River * Arnik River Kuribrong River Konawaruk River * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]