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Ore Deposits And Ore Minerals Ppt

Formation Of Ores

4. The minerals precipitate at different places in the system, since they precipitate at different temperatures. Slide 51 Mechanisms that involve oxidation state of the water Example Mississippi Valley Type lead-zinc deposits Slide 54 Example uranium ore Slide 56 Large deposit in Canada formed this way Slide 58 Slide 59

Powerpoint Presentation Minerals And Rocks

ores. needed to make things e.g., iron, chromium, titanium Ores are economically useful i.e., possible to mine mineral deposits. Hematite Fe 2 O 3 Sulfides. Metallic cations with sulfide S2- ion. ... PowerPoint Presentation - Minerals and Rocks Last modified by Bruce Harrison

11 Hydrothermal Alteration Usgs

deposits, ore generally consists of sulfide or sulfosalt minerals that contain Cu, Pb, Zn, Ag, and or Au. Gangue is defined as any noneconomic mineral deposited together with ore in VMS deposits this means essentially all nonsulfide miner-als see Hypogene Gangue Characteristics, Chapter 9, this

Ore Deposits And Ore Minerals Ppt

Ore deposits.ppt Minerals Gold. Ore minerals Minerals with economic value are ore minerals Minerals often associated with ore minerals but which do not have economic value are gangue minerals Key to economic deposits are geochemical traps metals are transported and precipitated in a very concentrated fashion Gold is almost 1,000,000 times less abundant than is iron Economic

Sedimenthosted Deposits

3. Sedimentary-Exhalative SEDEX Type Deposits Syngenetic stratiform, bedded Zn-Pb deposits hosted by fine-grained clastic sedimentary rocks. These three types may be considered as a spectrum of base-metal ore deposits which form in sedimentary rocks at some time during the evolution of a sedimentary basin. SEDIMENT-HOSTED DEPOSITS

Minerals And Power Resources

Metallic minerals contain metal in raw form. Metals are hard substances that conduct heat and electricity and have a characteristic lustre or shine. Iron ore, bauxite, manganese ore are some examples. Metallic minerals may be ferrous or non-ferrous. Ferrous minerals like iron ore

Me551geo551 Introduction To Geology Of

An ore deposit is a well-defined mineral deposit that has been tested and found to be of sufficient size, grade, and accessibility to be extracted i.e. mined and processed at a profit at a specific time. Thus, the size and grade of an ore deposit changes as the economic conditions change. Ore refers to industrial minerals as well as metals.

9 Ore Deposits And Economic Minerals Mineralogy

9.1.3 Mineral Deposits, Ore Deposits, and Mining. A mineral deposit is a place in Earths crust where geologic processes have concentrated one or more minerals at greater abundance than in the average crust. An ore deposit is a mineral deposit that can be produced to make a profit. Thus, all ore deposits are mineral deposits, but the reverse ...

Gy 111 Lecture Note Series Economic Geology

Lead-Zinc Ore deposits MVT ores. The mechanism of formation is remarkably similar to that of the other hydrothermal deposits. Groundwater seeps downward through sedimentary rocks and gets a little bit warmer as it sinks. There is no hot magma source. This heating is due entirely to the geothermal gradient, which is a natural consequence

Optical Properties Of Ore Minerals In Reflected Light

Study of Ore Minerals in Reflected Light S. Farooq, Dept of Geology AMU 2 Figure 1 Schematic diagram through an ore microscope illustrating essential components and the path of light through the system involving a the whole field glass-plate reflector and b the half-prism reflector. Accessories of the Ore Microscope

Rareearth Elements

Rare-Earth Elements. By Bradley S. Van Gosen, Philip L. Verplanck, Robert R. Seal II, Keith R. Long, and Joseph Gambogi Chapter O of. Critical Mineral Resources of the United StatesEconomic and

Chapter Xvii Mineral Veins And Ore Deposits

Chapter XVII. Mineral Veins And Ore Deposits. Mineral veins and ore deposits are of the greatest economic importance and have therefore received a great deal of attention, and a very extensive literature has grown up concerning them. Obviously, but a meagre outline of the subject can be attempted in this place, and the treatment of the much ...

What Distinguishes Ore From Other Mineral Deposits

Quiz amp Worksheet Goals. This quiz and worksheet will test you on Minerals of economic importance. The amount of ore needed for economic benefit. What percentage of the Earths crust is silver ...

The Express Evaluation Of The Ore Deposit

Often when one is buying a new section of the ore deposit and also after the acquisition, there is a need an expanded independent assessment of the possibility of the extraction of the minerals from the ore. For example, one has a deposit of copper, zinc, lead and iron. However, along the way you can get rare metals, gold, silver and other ...

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Introduction Mineral Deposits EPSC 452 Clarke of metal concentration factor by which metal must be concentrated to be exploitable Major Classes of Ore Deposits Magmatic Sedimentary Hydrothermal Bushveld Igneous Complex BIC Cross-Section of the Bushveld Igneous Complex Chromitite Layers in the BIC Merensky Reef Thin tens of cm chromitite bounded unit, semi-continuous over 300 km, hosts ...

Ore Deposits And Ore Minerals Ppt

Ore deposits that are associated with mafic to ultramafic igneous rocks can generally be divided into those where the metals of interest are hosted in oxide minerals and those where the metals of interest are held as sulfides or are strongly associated with sulfides , PGE alloys, arsenides, bismuthinides.

Ore Deposit Types And Their Primary

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 prot. Like all crustal rocks, they consist of minerals

Magmatic Ore Deposits Bu

Magmatic Ore Deposits A number of processes that occur during cooling and crystallization of magmatic bodies can lead to the separation and concentration of minerals. 1-Pegmatites 2-Layered intrusions 3-Kimberlites Examples of Magmatic ore deposits 1-Chromite deposits 2-Nickel Copper deposits 3-Platinum group metal PGM deposits

Epithermal Gold Deposits Their Characteristics Amp

Ore deposits Classification vs Modeling Each ore deposit is unique like a persons finger print This uniqueness arises out of fundamental differences in processes and environments local, site-specific geologic variations And produces an extremely large variation in characteristics If we group the deposits according to their characteristics, we get a

Textures Of Ore Deposits Bu

4- Identifying the equilibrium mineral assemblages, which in turn are necessary for understanding phase relations and the correct interpretation of geothermometric results. Textures of economic ore deposits I- Magmatic ores 1- Cumulus textures result from the settling of an ore deposit

Processes Of Ore Formation

In ore deposits the alternating layers are often magnetite andor chromite between layers of silicate. Ex. ... The chemistry of ore fluids and the mechanism of deposition of ore minerals remains a subject of hot debate. Arguments boil down to a source and nature of the solutions b means of transport of the metals and c mechanism of ...

Magmatic Ore Deposits

Magmatic Ore Deposits Magmatic ore deposits are those which are formed during crystallization of a magma, deep underground. The host rock for the mineralization can range from ultramafic to felsic. The deposit can consist of massive ores in some cases, a nd disseminations of rare minerals in others.

Chapter 1 An Introduction To Minerals Ore And Exploration

CHAPTER 1 AN INTRODUCTION TO MINERALS, ORE AND EXPLORATION. This first chapter covers basic geology and introduces terms such as minerals, mineralization and ore. It also introduces exploration, how it is done and why. Metals are found in most of our everyday items, mobile phones, computers, cars, household items and infrastructure.

Mineraldeposits1introductioniankenyonppt Ore Minerals

mineraldeposits1introductioniankenyon.ppt - Free download as Powerpoint Presentation .ppt, PDF File .pdf, Text File .txt or view presentation slides online.

Introduction To Mineral Deposit Models Usgs

A mineral deposit is a mineral occurrence of sufficient size and grade that it might, under the most favorable of circumstances, be considered to have economic potential. An ore deposit is a mineral deposit that has been tested and is known to be of sufficient size, grade, and accessibility to be producible to yield a profit.

Portrait Of A Planet Fifth Edition

Metallic Deposits Ore deposit that can be mined economically. Depends upon, political, economic, social factors. The concentration determines the grade of the deposit. Ore is mined that contains native metals or a concentrated accumulation of ore minerals. Uneconomic minerals found with native metalsore minerals is called Gangue. Malachite ...

Chapter 5 Mineralogy Textures And

Gangue minerals include quartz, dolomite, sericite and minor ankerite and calcite. At least 5 main paragenetic mineral assemblage stages have been identified during this study that consistently occur at the Nalou and Discovery West, -Colluvial, -Main and -East gold deposits, and shown in Fig. 5.2.1. The mineral assemblage stages identified include

Classification Of Mineral Deposits Earth Sci

A syngenetic mineral deposit is a deposit which formed at the same time as the rocks that enclose it. Magmatic deposits are syngenetic in that the ore minerals crystallize from the same liquid that produces the silicate minerals which form the bulk of the intrusive - they crystallize more or

Pdf Ore Reserve And Mineral Resource Estimation Methods

Methods For O re Reserve and Mineral Resource Estimation August 2003. Art vs Science. Reserve and reso urce estimating is as much an. art as it is a science. The judgement ...

Theories Of Ore Genesis 3ppt Theories Of Ore Genesis

Concept An Ore mineral is mostly a non-silicate mineral Most ores are sulphide, some are oxides, native metals. Industrial minerals may occur as silicate Ore genesis similar to formation of rocks 2 main processes i Internal igneous processes ii External surface processes Ores are mostly sulphides and oxides whereas rocks are mostly silicates hence ...

Metamorphism And Ore Deposits

Metamorphism and Ore Deposits Metamorphic processes profoundly alter pre-existing mineral deposits and form new ones. The chief agents of metamorphism are heat, pressure, time, and various solutions. The materials acted upon are either earlier formed mineral deposits or ordinary rocks. Valuable nonmetallic mineral deposits are formed from rocks mainly through recrystallization and ...

Iron And Manganese Ore Deposits Mineralogy

The majority of ore deposits of both iron and manganese are of sedimentary origin. At present, high-grade iron ore deposits formed by hydrothermal and supergene enrichment of Proterozoic banded iron formations constitute the most important source for iron ores, with only some magmatic and skarn-type iron ore deposits being mined.

Classification Of Ore Deposits Rock Geology Minerals

Tubular mineral deposits, these are ore bodies which are relatively short in two dimensions but extensive in third dimension, e.g pipes. Irregular Discordant Orebodies Disseminated deposits, in these deposits, ore minerals are peppered through out the body of host rock in the same way as the accessory minerals are disseminated in the igneous rocks.

Pdf Concepts Of An Ore Deposit

Ore deposits may be consider ed as Ore deposit is an occurrence of minerals or metals in. sufficiently high concentr ation to be profit able to mine. and process using curren t technology and ...