the alteration and mineralization of iron ore depositin ethiopia

Geology, Geochemistry and Geochronology of the Gold

The geology of Ethiopia has favored the emplacement of several mineral deposits such as gold Au, Tantalum and Platinum, Phosphate, rutile, iron ore, bauxite and etc. Tadesse, 2003. Au mineralization is usually spatially and temporally related to granitoids Hart et.al., 2004, Goldfarb et.al., 2005.

ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS

1 Ore Deposits ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS K.G. McQueen CRC LEME, Australian National University, Canberra, ACT 0200 and School of REHS, University of Canberra, ACT 2601. INTRODUCTION Ore deposits are crustal concentrations of useful elements that can be exploited at a profit. Like all crustal rocks, they consist of minerals

PDF The Nihe Iron Deposit, Anhui Province, Eastern China

The typical alteration mineralprisesite apatite actinolite ± pyroxene, similar to the Kiruna class of iron deposits Frietsch, 1978Hilderband, 1986. Some researchers have therefore suggested that these deposits can be classified as an endmember of the iron oxide copper gold IOCG deposit class Mao et al., 2006Mao

Ore and Alteration Types of the Gold and Copper

The Boyongan porphyry Cu Au deposit, in contrast,posed of a well developed oxide zone containing the bulk of copper minerals and a lower grade hypogene sulfi de zone, hosted byposite diorite porphyry stock intruding the Oligocene Bacuag Formation. 3. Ore and alteration types T wo ore and three alteration types were encountered in

GEOLOGY and MINERAL RESOURCES OF ETHIOPIA

GEOLOGY and MINERAL RESOURCES OF ETHIOPIA Presented By Hundie Melka,GSE at China Mining Conference 2016 Sep.24,2016,Tianjin, China Kore iron deposits mineralization Keta Abetselo Base metals Mineraliz. Fakusho Molybdenum mineraliz. Placer Gold deposits

The Chinese Iron Ore Deposits and Ore Production

Dalizi type iron ore deposit in China, although it is also developed in Yimen, Eshan, Huanian in Yunnan Province. 2.2. Late magmatic iron ore deposits This type of iron ore deposit is associated with the mafic ultramafic magmatic intrusions of the iron and its iron minerals are rich in vanadium and titanium, commonly referred to as

Iron process iron ore reserve in ethiopia

Sep 29, 2012· About Mineral Licensing and:http://www.gyratorycrusher.com/quarry/quarry/iron crusher.html Iron Ore Mining in Zimbabwe:http://www.gyratorycrusher.com/quarry/

PDF Gangue mineralogy and deportment of titanium Ti

Gol E Goharplex is located 50km southwest of Sirjan City, Iran. Its concentrate contains sulfur and phosphor with grades of 0.5 S and 0.08 P which are higher than the steel industrial

Hydrothermal Fluid Processes and Evolution of the Giant

The Serra Norte Carajás banded iron formation BIF hosted iron ore deposits are located in the Carajás mineral province. The deposits are hosted in the ca. 2.7 Ga Grão Pará Group, a metamorphosed volcanic sedimentary sequence where jaspilites are under and overlain by basalts, both at greenschist facies conditions.

Cretaceous Cu Au, pyrite, and Fe oxide apatite deposits in

The Cretaceous Ningwu volcanic basin of the Middle and Lower Yangtze River Valley metallogenic belt of eastern China hosts numerous Fe oxide apatite, Cu Au, and pyrite deposits. The mineralization in the Ningwu basin is associated with subvolcanic rocks, consisting of gabbro diorite porphyry and/or pyroxene diorite. However, the mineralization is associated with subvolcanic and volcanic rock

The Kenticha rare element pegmatite, Ethiopia: internal

Apr 22, 2009· The Kenticha rare element pegmatite, a globally important tantalite source in the Neoproterozoic Adola Belt of southern Ethiopia, is a highly fractionated, huge 2,000 m long and up to 100 m thick, subhorizontal, sheet like body, discordantly emplaced in ultramafic host rock. It corresponds to the spodumene subtype of the rare element pegmatite class and belongs to the lithiumcesium

Geology, Geochemistry and Geochronology of the Gold

The geology of Ethiopia has favored the emplacement of several mineral deposits such as gold Au, Tantalum and Platinum, Phosphate, rutile, iron ore, bauxite and etc. Tadesse, 2003. Au mineralization is usually spatially and temporally related to granitoids Hart et.al., 2004, Goldfarb et.al., 2005.

PDF Gangue mineralogy and deportment of titanium Ti

Gol E Goharplex is located 50km southwest of Sirjan City, Iran. Its concentrate contains sulfur and phosphor with grades of 0.5 S and 0.08 P which are higher than the steel industrial

23 Minerals in Ethiopia with Details Gold, Gemstones, etc

According to research done by Swedish Geological AB, Ethiopia can be a major international supplier of minerals, specifically copper, gold, tantalum, potash, iron ore, and coal. The following are 23 minerals in Ethiopia with their description and details.

The Chinese Iron Ore Deposits and Ore Production

Dalizi type iron ore deposit in China, although it is also developed in Yimen, Eshan, Huanian in Yunnan Province. 2.2. Late magmatic iron ore deposits This type of iron ore deposit is associated with the mafic ultramafic magmatic intrusions of the iron and its iron minerals are rich in vanadium and titanium, commonly referred to as

The Superficial Alteration of Ore Deposits

not most, iron ore deposits or it may be derived from more dis tant sources, often from greater or less depths, as in some of the precious metal deposits. Occasionally, both these sources may be drawn on for mineral matter in one deposit. In this subject

SorkheDizaj Iron OxideApatite Ore Deposit in the

Dec 20, 2012· Four majoric stages are discriminated in the mineralization including early, oxide, sulfide, and late stage. The SorkheDizaj deposit is similar in the aspects of host rock lithology, alteration, and mineralogy to the Kirunatype deposits associated with minor Cu sulfide minerals.

Sٍedimentary manganes and iron ore deposits

Nov 23, 2015· Gangue minerals: clay minerals, quartz, calcite dolomite, and sulphate minerals. I Iron ore deposit of sedimentary nature Sedimentary iron ore deposit is a very limited occurrence, being found only in the: One locality in Sinai Two localities in the Western Desert 22 November 2015 Prof. Dr. H.Z. Harraz Presentation Sed. Mn Fe Ore Deposits 30

Genesis and characteristics of lateritic iron deposit in

Dec 01, 2020· Chemical Index Weathering and Chemical Index of Alteration shows that Mai Kuhli lateritic iron deposit is formed due intensive weathering product of the host rocks.

The Superficial Alteration of Ore Deposits

not most, iron ore deposits or it may be derived from more dis tant sources, often from greater or less depths, as in some of the precious metal deposits. Occasionally, both these sources may be drawn on for mineral matter in one deposit. In this subject

Alteration and Vein Mineralization, Schwartzwalder

of iron bearing minerals. 23. Oxygen and carbon isotopic data for vein carbon ates, and oxygen isotopic data for depositing fluids. 115 24. Diagram showing the stabilities of sodium and 122 potassium silicates. 25. Diagrams showing the stability fields for 126 minerals formed during alteration and early vein mineralization. 26.

The Nature and Origin of Hydrothermal REE Mineralization

The Neoproterozoic ~840 Ma Sin Quyen deposit in northwestern Vietnam is a rare example of an allanite Ce rich iron oxide copper gold IOCG type deposit. This deposit contains economic concentrations of Cu and Au and subeconomic concentrations of light rare earth elements LREEs La, Ce, Pr, and Nd in massive or banded replacement ores

Iron ore deposits of india SlideShare

Oct 22, 2017· Conclusion: Iron has found its usage from a very early part of human civilization, second only to copper bronze. Haematite andite are the two important iron ores from which iron is extracted. Iron is widely in the construction of roads, railways, other infrastructure, appliances, and buildings. Iron ore deposits are aalmost found in

Ethiopia Possesses 70 Million Tons of Iron Ore Deposit

Ethiopia has more than 70 million tons of iron ore deposit in Amhara, Oromia and Tigray region, the Geological Survey of Ethiopia announced. About 57.8 million tons of the stated deposit is found

Ethiopia, the land of Oppurtunity for Mining andm

Of all of Ethiopias mineral potential, potash has garnered some of the greatest interest. 95 of the worlds potash is mined for use in fertilizers, while the rest is used for feed supplements and industrial production. As can be seen in the map below, potash deposits can be found scattered around Ethiopias northern, central and southern regions.

Petrology and iron ore mineralization in the

The iron ore deposits in Ikutha area cover an area of 5 sq km with a reserve tonnage of 250 million tons ofite. Besides the occurrence of iron ore deposits in the study area, this study has also established the presence of other minerals of economic importance like manganese,s, copper, magnesite, graphite and marbles.

Lega Dembi Deposit In Oromiya, Ethiopia The Diggings

The Lega Dembi Deposit is in Oromiya, Ethiopia. The site was first discovered in 1892. The ore minedposed of gold. The ore is found in quartz veins up to 2,000 meters 6,561 feet in length. The host rock in this area is quartzite from the Neoproterozoic era 1.00 to 0.54 billion years ago.

Geology, Geochemistry and Geochronology of the Gold

The geology of Ethiopia has favored the emplacement of several mineral deposits such as gold Au, Tantalum and Platinum, Phosphate, rutile, iron ore, bauxite and etc. Tadesse, 2003. Au mineralization is usually spatially and temporally related to granitoids Hart et.al., 2004, Goldfarb et.al., 2005.

Sٍedimentary manganes and iron ore deposits

Nov 23, 2015· Gangue minerals: clay minerals, quartz, calcite dolomite, and sulphate minerals. I Iron ore deposit of sedimentary nature Sedimentary iron ore deposit is a very limited occurrence, being found only in the: One locality in Sinai Two localities in the Western Desert 22 November 2015 Prof. Dr. H.Z. Harraz Presentation Sed. Mn Fe Ore Deposits 30

Source of ore fluids at the Kalahari Goldridge deposit

Hydrothermal alteration of host rocks at the Kalahari Goldridge deposit is pervasive, affecting the entire rock package from hanging wall right through the ore zone and footwall. This has generally overprinted the regional meta morphic assemblage making it impossible to define pristine rock types that host the ore body in the deposit. In gen

Iron Mineral Deposits And Projects In Peoples Republic Of

Oolitic siderite and hematite are the main ore minerals. Siderite ore has a grade of about 25 TFe and the hematite ore has grades of 35 47 TFe. The resource of the deposit is a few tens of million tonnes. Because the ore usually contains high phosphorus content, many of the iron deposits of the type have yet to be developed.

Alteration mineral mapping for iron prospecting using ETM+

The Tonkolili iron field in northern Sierra Leone has the largest known iron ore deposit in Africa. It occurs in a greenstone belt in an Achaean granitic basement. This study focused mainly on mapping areas with iron oxide and hydroxyl bearing minerals, and identifying potential areas for haematite mineralization and banded iron formations BIFs in Tonkolili.

PAPER OPEN ACCESS Identification of hydrothermal deposit

The mineralized set and mineral alteration associations in the generally obtained research area are located in contact between the intrusions of volcanic rocks and the carbonate rocks of the Arjosari Formation, indicating the type of hydrothermal deposits into the skarn deposit type . The enrichment of iron ore minerals present predominantly

Alteration mineral mapping for iron prospecting using ETM+

The Tonkolili iron field in northern Sierra Leone has the largest known iron ore deposit in Africa. It occurs in a greenstone belt in an Achaean granitic basement. This study focused mainly on mapping areas with iron oxide and hydroxyl bearing minerals, and identifying potential areas for haematite mineralization and banded iron formations BIFs in Tonkolili.

Hydrothermal Fluid Processes and Evolution of the Giant

The Serra Norte Carajás banded iron formation BIF hosted iron ore deposits are located in the Carajás mineral province. The deposits are hosted in the ca. 2.7 Ga Grão Pará Group, a metamorphosed volcanic sedimentary sequence where jaspilites are under and overlain by basalts, both at greenschist facies conditions.

Alteration and ore distribution in the Proterozoic Mines

ore distribution in the Copperbelt is as much the result of supergene alteration as it is of original ore precipitation patterns, renderingplex, difficult to characterize, and challenging to mineral exploration e.g., Decrée et al. 2010. This project focused on two deposits in the Tenke Fungurume district in the Democratic Republic of

Alteration, mineralization, and genesis of the zoned

Sep 01, 2013· The present findings suggest that the Tongshan deposit was subjected to prograde alteration and mineralization, followed by retrogression. The alteration can be divided into a sequence of stages: contact metamorphism, prograde metasomatism, early retrogression, and late retrogression.

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