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classification ore deposits

CLASSIFICATION OF DEPOSITS - Earth Sci

Classification of Mineral Deposits Classification of Mineral Deposits introduction hydrothermal deposits magmatic deposits syngenetic deposits epigenetic deposits porphyry deposits skarn deposits ... Roberts, R.G. and Sheahan, P.A., 1988, Ore Deposit Models, Geoscience Canada, Reprint Series 3: Geological Association of Canada, 194 p. ...

Mineral deposits: Classification | SpringerLink

高达10%返现 · Mineral deposits: Classification. Ore deposits are of such infrequent and random occurrence, of such modest size, and so different in composition in comparison with the generality of rocks, that they probably require an uncommon sequence of geologic happenings to bring about their formation. The study of such deposits in all quarters of the ...

Classification of Ore Deposits | Nature

PROF. NIGGLI has followed his important monograph of 1920 on the function of the volatile constituents in petrology by an interesting essay on their importance in the classification of ore deposits.

Classification of ore deposits - SlideShare

Sep 17, 2017 · Classification of Ore Deposits By Abdul Bari Qanit M.Sc. Geology. 2. Based on the Relation with host-rock 1. SyngeneticOreDeposits 2. EpigeneticOreDeposits. 3. Syngenetic Ore Deposits Ore deposits which are formed as the same time as the enclosing rock, are called “Syngenetic Ore Deposits”. Sedimentary Ore Deposits are the example of ...

Classification of ore deposits - SlideShare

Oct 22, 2017 · Schneiderhöhn Classification •Schneiderhöhn also considered only mineral deposits related to magmatic processes. •Four main classes are recognized depending on the nature of the ore-bearing fluids: intrusive and liquid-magmatic (magma), pneumatolytic (gases under high temperature-pressure conditions), hydrothermal (aqueous solutions), and ...

Classification of Ore Deposits | Rock (Geology) | Minerals

CLASSIFICATION OF ORE DPOSITS. a) Basing on the nature and morphology b) Basing on the origin/ Genesis c) Basing on the temperature of formation (PT Conditions) d) Basing on the mineral composition CLASSIFICATION BASING ON THE MORPHOLOGY/SHAPE Regular Discordant Ore-bodies Tubular mineral deposits, these are ore bodies which are extensive in two dimensions, but have restricted

CLASSIFICATION OF ORE DEPOSITS 1.ppt - 2.1 CLASSIFICATION ...

background • Why the need for classification? – Number of mineral deposits are large • Iron ore deposits; pyrometasomatic deposit, banded iron formation (BIF), ironstones, etc • Igneous deposits; hydrothermal, magmatic, etc • Secondary deposits:Bauxite, laterite, alluvial, etc – Classification is a requirement in scientific work • As done in other branches of science e.g. botany ...

ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS K.G ...

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

Classification of Ore Deposits

Thus the classifications of mineral deposits should be flexible, and should allow gradations or intermediate classes. Niggli, Schneiderhöhn, Lindgren, and Bateman classifications are essentially similar; genesis or nature of the ore-bearing fluid is the basis

A classification scheme for ore deposits best ...

A classification scheme for ore deposits There are many different way of categorizing ore deposits, and the best classification schemes are probably those that remain as independent of genetic linkage as possible these are: Igneous, Metamorphic, and Sedimentary ore deposits (Fig 1, a, b)

Classification of Ore Deposit | Igneous Rock | Magma

Ore deposit classifications attempt to group ore bodies which share certain common characteristics. Ideally, by grouping similar deposits together we can pool information and learn facts which might be useful in the discovery of similar ore deposits. To be useful an ore deposit classification should: •be easily applied in the field

CLASSIFICATION OF ORE DEPOSITS 1.ppt - 2.1 CLASSIFICATION ...

background • Why the need for classification? – Number of mineral deposits are large • Iron ore deposits; pyrometasomatic deposit, banded iron formation (BIF), ironstones, etc • Igneous deposits; hydrothermal, magmatic, etc • Secondary deposits:Bauxite, laterite, alluvial, etc – Classification is a requirement in scientific work • As done in other branches of science e.g. botany ...

(PDF) Classification of mineral deposits into types using ...

For example, creation of a grade-and-tonnage model for rhyolite-hosted Sn deposits in 1986 demonstrated for the first time that 90 percent of such deposits contain less than 4,200 tons of ore.

Classification of Mineral Deposits | Geology for Investors

Jul 29, 2013 · There are two main approaches to mineral deposit classification. The descriptive models are a more objective label, which describes the rocks and tectonic setting of the deposit. These have now evolved to what is known as a genetic model, which includes theories on deposit formation as well as the physical properties of the mineral deposit.

ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS K.G ...

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

Gold Deposits and Their Geological Classification

The development of a simple classification scheme for gold deposits, as presented here, has been approached with a full appreciation that there are many difficulties associated with classification of ore deposits in general. In the case of lode gold deposits, contrasting classifications and nomenclatures have been arrived at historically ...

Ore Deposits- Genetic classification (ch 6) Flashcards ...

Start studying Ore Deposits- Genetic classification (ch 6). Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Ore genesis - Wikipedia

Classification of ore deposits. Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation, which roughly also correlates with particular mineralising fluids, mineral associations and structural styles.

Sedimentary exhalative deposits - Wikipedia

Sedimentary exhalative deposits (SedEx or SEDEX deposits) are zinc-lead deposits originally interpreted to have been formed by discharge of metal-bearing basinal fluids onto the seafloor resulting in the precipitation of mainly stratiform ore, often with thin laminations of sulphide minerals. SEDEX deposits are hosted largely by clastic rocks deposited in intracontinental rifts or failed rift ...

Reading: Ore Genesis | Geology

Often ore deposits are classified after examples of their type, for instance Broken Hill type lead-zinc-silver deposits or Carlin–type gold deposits. Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation, which roughly also correlates with particular mineralising fluids, mineral ...

Geological ore deposits - The Australian Museum

Geological ore deposits are of many different types and occur in all geological environments. The main types of geological ore deposits of importance can be divided into: metallic deposits; non-metallic deposits; fossil fuel deposits; Finding ore deposits. Geologists are always searching for more ore deposits to meet constant demand.

Iron Ore Producers Classify

Iron ore classification Process productivity. Mar 14, 2017 The ability to accurately predict downstream processing performance of any given ore body is critical to resource evaluation, development decision-making, and maximising output. A powerful iron ore classification system is a critical prerequisite.

Classification of Ore Deposits

Thus the classifications of mineral deposits should be flexible, and should allow gradations or intermediate classes. Niggli, Schneiderhöhn, Lindgren, and Bateman classifications are essentially similar; genesis or nature of the ore-bearing fluid is the basis

Orogenic gold deposits: a proposed classification in the ...

The so-called 'mesothermal' gold deposits are associated with reginally metamorphosed terranes of all ages. Ores were formed during compressional to transpressional deformation processes at convergent plate margins in accretionary and collisional orogens. In both types of orogen, hydrated marine sedimentary and volcanic rocks have been added to continental margins during tens to some 100 ...

Classification of magmatic ore deposits | Economic Geology ...

Saline Deposits: A Symposium based on Papers from the International Conference on Saline Deposits, Houston, Texas, 1962 Chemical variation, modal composition and classification of granitoids

ORE DEPOSIT TYPES – Geology Academy

May 19, 2018 · A simplified genetic classification encompassing all ore deposit types is shown in the figure above . This scheme highlights the broad categories of ore-forming processes and the later overprints that may affect the deposits. Deposits can also be broadly subdivided into syngenetic ...

Mineral Deposit Models - USGS

constitute the ore fluid. In any event, the dolomite is a powerful ore guide and belongs somewhere in the “final model.” CLASSIFICATION OF MODELS USED IN THIS COMPILATION For the purpose at hand the classification scheme has two requirements: (1) it must be open so that new types of deposits can be added in the future,

Orogenic gold deposits: A proposed classification in the ...

Apr 01, 1998 · Ore fluid salinity might be a key discriminator in the case of the skarns, with relatively high ore-fluid salinities being associated with typical gold skarn deposits that are more directly linked to intrusive sources (Meinert, 1993). The late Palaeozoic Muruntau deposit in Uzbekistan is apparently one example of a post-Archaean, higher ...

Introduction to Mineral Deposit Models - USGS

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. (In these days of controlled economies and integrated industries, the "profit" decision may be based on considerations that extend far beyond the mine itself, in some instances relating ...

(PDF) Genetic Classification of ore-forming processes

The existing genetic mineral deposit classifications has developed and embraced the genetic classification of ore-forming processes in accordance with system theory, structured taxons revealing ...

Classification of ore deposits - es.slideshare.net

INTRODUCTION The purpose of any classification is to group similar objects into classes or sets either for convenience, organization , or access , as in a collection ,a library , or a computer data base , or for the purpose of learning more about the items being classified . The study of ore deposits through the last century has required and ...

Ore Minerals : What are Ore Minerals? - Geology Page

Nov 04, 2019 · A variety of geological processes form ore bodies. The formation of the ore process is called the genesis of the ore. Classification of Ore Minerals. Ore Mineral deposits are categorized according to different criteria that have been established through the study of economic geology or mineral genesis. Typical are the classifications below.

A classification of mineral systems, overviews of plate ...

May 01, 2016 · Holistic studies of ore deposits and their classification can be divided into two groups: studies done before plate-tectonics was recognised as a global geological process, and those done afterwards. In the former are the works of Lindgren (1933) , Bateman (1967) , Stanton (1972) , Smirnov (1976) and Jensen and Bateman (1979) .

What is Ore? - Definition, Types, Uses & Examples - Video ...

Ore deposits are classified based on how they form, whether as a result of an igneous, metamorphic, or sedimentary process, or a hydrothermal exposure process. Some metals can form from more than ...

Ore deposit models - QueensMineDesignWiki

An ore deposit is a geological anomaly in which metals have been concentrated in a higher abundance than that of the neighboring parent rock. Ore is a classification of rock that describes an economically viable block, from which metal or minerals can be extracted profitably. An ore deposit model is an extensive organization of information ...

Geological Classification of Uranium Deposits and ...

This publication defines a new classification scheme, which is simple and descriptive, but flexible enough to encompass the recent advances in our understanding of uranium geology and deposit genesis. It contains improved definition of the deposit types, supported by type examples of those deposits for which good data are available, but not ...

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