paragenesis and zonation of iron ore in ethiopia

paragenesis and zonation of iron ore in ethiopia

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cipal iron and manganese ore occurrences in Ethiopia known till the beginning of 1964. The description of individual deposits ..... The paragenesis of the present ore is simple and the magnetite as well as the quartz waste ..... size, occur in the bordering zones with marble too. Normally they are pseudomorphoses after pyrite...

The massive sulphides and magnetite deposits of northern Ethiopia

terised by the occurrences of pyritic base metal sulphides, iron oxides and ... was involved in investigations of Ethiopia's ore deposits intermittently since .... and zones. After extensive Paleozoic peneplanation, the Permian continental sedimen- tation produced sandstones and tillites associated with clays, corresponding.

Spilpunt: Ethiopia

Apr 13, 2007 ... Mining in Ethiopia. The mineral sector was opened up to private investors in 1991 with new legislation and the Mineral Operations Regulations in 1994 ... is ready for commercial exploration, whilst deposits of platinum (and other PGE), tantalite, iron, copper, lead, zinc, nickel and other base metals do exist.

Ethiopia - Mining - Country Studies

Ethiopia's minerals industry has been only of minor importance, contributing an average of less than 0.2 percent of GDP at constant factor cost between l984/85 ... In the late 1980s, prospectors identified iron ore deposits estimated at 20 million tons in the Agametta region (near Mitsiwa) and another l60,00 tons of iron ore in...

Paragenesis of Asnawa Iron Ore in Penjween Area, Zagros Suture ...

Additionally, the detail of the different stages of the iron ore paragenesis is shown by discussion with the aid of suitable graphical drawing and geochemical variation diagrams. By these methods, the sedimentary stratigraphic unit of the parent rock (protolith) was fond for the first time which consists of Qulqula Radiolarian...

Geochemistry, alteration, and genesis of gold mineralization in the ...

Ductile shear zone hosted mesothermal gold mineralization of the Okote area is located in southern Ethiopia. Three N-. S striking ductile shear zones, with different intensity of shearing and hydrothermal alteration, cut the mafic rocks. The gold-mineralized ... 40Ar/39Ar dating of biotite and muscovite from ore zone gave an...

Petrography and geochemistry of ferricrete near Shire, northern ...

Key words: Ferricrete, Laterite, Ferruginous sandstone, Shire, Tigray, Northern Ethiopia, ANS. 1. ... (P2O5)and iron ore of 58 mt with a grade of 41.65% total iron (Wondafrash, 2010; Tadesse,. 2006).Occurrence of ... domains with associated shear zones of predominant sinistral sense of shear which are attributed to major...

Shear Zone-Hosted Base Metal Mineralization near Abraha ...

Keywords: Abraha-Weatsebaha, Tigray, Ethiopia, Neoproterozoic, Shear zones, Paragenesis,. Sulfide mineralization. 1. ..... the presence of secondary quartz, carbonatiation indicated by the presence of calcite; and ferrugenization by the presence of iron hydroxide (limonite). 4.1.2. Ore petrography. The polished sections...

Ethiopia - Mining Industry |

Jan 13, 2017 ... Minerals found in Ethiopia includes gold, platinum, niobium, tantalum, nickel, cooper, chrome, manganese, limestone, sandstone, gypsum, clay, lignite, opal, oil shale, laterite iron ore, bentonite, clay, perlite, diatomite, potash, halite, and oil & gas. The mining and quarrying sector is highly underdeveloped...

Geochemistry, Paragenesis, and Wall-Rock Alteration of the ...

Aug 27, 2014 ... Geochemistry, Paragenesis, and Wall-Rock Alteration of the Qatruyeh Iron Deposits, Southwest of Iran: Implications for a Hydrothermal-Metasomatic ..... Layered magnetite ores replaced dolomitic marble and the calc-silicate minerals that are typical of skarns are virtually absent from the ore zones [50].

Investment Opportunities in the Mining Sector in Ethiopia

Jun 9, 2011 ... Contribution of mining sector to GDP:- The mining sector contributes less than 5% to the ... Deposits of Bikilal area. (contains about 180 million tons of phosphate and 57 million tons of iron) e) Base metal occurrences f) Other industrial and construction ... Sedimentary Basins of Ethiopia:- potential zones.

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