Reserves, causes and distribution of
The total world phosphate rock reserves of about 45.8 billion tons, mainly concentrated in Morocco, China, the United States, former Soviet Union, South Africa. Egyptian phosphate rock reserves in the forefront of Arab countries, reserves of about 15 million tons.
Egypt is shallow marine phosphate ore deposits formed in the early geological Sanonian. Its maximum intensity and the late Campanian or early Maatrichtain northern slope from the African continent from north to south is closely related to seawater intrusion. Only very few obvious example of phosphate rock in the late Santonian geological, Maatrichtain geology in the late Tertiary and early Cenozoic sediments were recorded.
According to the upper Campanian-lower Maatrichtain deposition as well as one of the phosphate content of shale is divided into three different latitudes (south, central and northern).
Southern and northern part of phosphate rock reserves is not open, the central region is rich phosphate reserves in areas of Egypt. In the southern region, including Dungul-kurkur area; central region, including: Red Sea, Nile Valley, the western desert (Kharga Abu-Tartur Dakhla)
Aye grade and mining of phosphate
Phosphate in the international arena usually greater than 30% of P2O5 content as high-grade ore, P2O5 content of less than 12% as poor ore. Egyptian phosphate rock in the P2O5 content is generally about 28%, more than 30% less.
Egypt currently has 50 multiple phosphate mining, the annual output of about 300 million tons. Phosphate mining company with mining companies Nasser, the Red Sea Company, tile Billiton Zenithia company, Nile Company.
Egypt’s annual exports of phosphate mining company operating mainly by Nasser, 2004/05, 2003/04 and 2002/03, exports of phosphate, respectively, to 147 million tons, 1.15 million tons and 96 tons.
The main import of Egyptian phosphate countries: Indonesia, India, New Zealand, Bangladesh, Tanzania, Cyprus, Jordan, Turkey and Sri Lanka
Egypt’s main phosphate – A Puta Billiton phosphate
Location and access
The mine is located in Egypt and Central Valley provincial capital of the new A – Kaer Ka city, 50 kilometers west of the Western Desert, Egypt, adjacent to the southwest extension of A Puta plateau at latitude 25.26 degrees and 30.02 degrees east longitude intersection. The mine with the City and Da Kala Ka Erka two asphalt road connecting the city with communication with the outside world, and there is more standard road network to the various mining mining sites.
A wide range of geological exploration and development work has been in this 112 km2 of the plateau region to start, including: mapping, trenching, dressing, drilling, pitting and sampling and so on.
The mining of phosphorite from the Maestrichtian geological terrigenous carbonate formed, deposit horizontal distribution, the average thickness of 3.87 m, P2O5 content of 25.56% on average.
According to 1972 angstroms National Mineral Reserve estimates, the reserves of 987.8 million tons.
The causes of phosphorite mining verifiable, there are two types, namely, the causes of non-meteorological and meteorological causes, rather than meteorological causes accounted for 95%.
Phosphorite are particles, the majority were high and middle mine, its particles less than 0.5 mm.
Gold occurrences in the ANS are mainly confined to quartz-mineralized shear zones, which occur in the ophiolitic sequences, the island arc assemblages, the Hammamat and Dokhan Groups and in the post-orogenic granitoids. The latter seem to have had an important influence on gold mineralization, as productive shear zones and quartz veins often occur in the granitoids themselves or in their direct vicinity. Analytical investigations of different rocks in the ANS (e.g. serpentinites, basalts, clastic sedimentary rocks) indicate exposed gold concentrations of 20–50 ppb in mafic rocks and clastic sediments, and concentrations close to 200 ppb in the serpentinites (Langwieder, 1994). However, unaltered granitic rocks did not show positive gold anomalies (Murr, 1999). Structural investigations of the shear zones showed that they were formed during the previously mentioned compressional or transpressional late stage events of the orogeny. Post-orogenic intrusions, predating the quartz veins or shear zones, provided heat sources. The latter resulted in the formation of hydrothermal convection cells, and interstitial waters dissolved available mineral species; where such cells were present, low concentrations of gold were derived from the strained rocks, due to elevated temperature and pressure.
The mineral industry has been played an important part in the development of civilizations throughout the world history, underpinning the…
Has the advantage of cheap matching, unobstructed discharge all line, reliable operating, convenient operation, high potency and saving energy. particularly…
Barite is an important mineral raw materials, as a mineral resource, without barite processed purification often can not get a…