Classification Of Ore Deposits

The Classification of Ore Deposits

Three principal systems of classification of ore deposits of magmatic affiliations are in current use—the Lindgren depth-zone classification, the Niggli volcanic-plutonic classification, and the Schneiderhöhn oreassociation classification. These are examined critically in the light of general principles of classification, and some ...

Ore Deposits

Many geological parameters have been used for ore deposit classification, such as the presence of certain metals or minerals (e.g., gold, magnetite), shape of the ore body (dissemination, vein, layer, etc.), geological environment (continental or marine basins), local tectonic regime (shear zone, breccia), geotectonic setting (collisional, island arc, continental …

Mineral Deposits: Types and Geology

2.8.1 Magmatic Ore Deposits – 89 2.8.2 Hydrothermal Ore Deposits – 97 2.8.3 Sedimentary Ore Deposits – 106 ... the genesis must be reflected in mineral deposit classification (Jenkin et al. 2015). In this chapter, two main classifications of …

Mineral Deposits: Types and Geology

genetic classification of mineral deposits encompasses four main groups: magmatic, hydrothermal, sedimentary, and metamor-phic/metamorphosed, each of them with …

Classification of Mineral Deposits

This subdivision, or classification, can be based on a number of criteria, such as minerals or metals contained, the shape or size of the deposit, host rocks (the rocks which enclose or contain the deposit) or the genesis of the deposit (the geological processes which combined to form …

A classification of Broken Hill-type deposits: A critical review

In the Jackson and Chloe deposits the ore occurs in metasediments and is spatially associated with amphibolite. The metallic mineralization, which consists primarily of galena, sphalerite, chalcopyrite, pyrite, pyrrhotite, and magnetite, is skarn-like (garnet-rich and pyroxene-rich) (Pennisi, 2008). An epidote-rich rock surrounds the main ...

The Classification of Ore Deposits

Three principal systems of classification of ore deposits of magmatic affiliations are in current use—the Lindgren depth-zone classification, the Niggli volcanic-plutonic classification, and …

Geological Classification of Canadian Gold Deposits

Classifications of ore deposits provide essential frameworks for designing exploration strategies, evaluating prospects, and performing resource assessments of selected areas. This paper proposes a geological classification of lode gold deposits, based largely on the nature of the ore and on the geological settings of the deposits. Sixteen common types of bedrock gold …

12.3: Ore Genesis

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 …

9.3.2: Hydrothermal Ore Deposits

9.3.2.1 Porphyry Deposits Figure 9.84: The mine workings at Morenci, Arizona. Porphyry deposits are a special kind of hydrothermal deposit. They form when hydrothermal fluids, derived from magmas at depth, carry metals toward the surface and deposit minerals to create disseminated ore deposits.

Classification of ore deposits | PPT

Classification of ore deposits - Download as a PDF or view online for free. ... Abdul Bari Qanit Follow. The document classifies ore deposits into several categories based on their relation to host rock, genesis, geological …

CLASSIFICATION OF ORE DEPOSITS

Ore Deposit Genesis | U.S. Geological Survey

This project is focused on the sediment-hosted copper deposits of the Midcontinent Rift, with three main objectives: 1) describe the ore mineralogy and geochemistry of the White Pine and Copperwood deposits, 2) evaluate whether hydrothermal alteration in footwall rocks can be used as a vector towards ore, and 3) provide a careful scoping study ...

9 Ore Deposits and Economic Minerals – Mineralogy

The quality of the ore in massive sulfide deposits is high, host rocks are generally greater than 60% ore minerals, so even if they are small, massive sulfide deposits are alluring mining prospects. The photo below in Figure 9.87 shows one of the main pits at the Rio Tinto Mine.

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An ore deposit is 'what is mined'. Precise definitions of the term are based on economics rather than geology, for instance: ore is rock that may be, is hoped to be, will be, is or has been …

Reading: Ore Genesis | Geology

Classification of Ore Deposits. Ore deposits are usually classified by ore formation processes and geological setting. For example, SEDEX deposits, literally meaning "sedimentary exhalative" are a class of ore deposit formed on the sea floor (sedimentary) by exhalation of brines into seawater (exhalative), causing chemical precipitation of ...

9.3: Types of Ore Deposits

This page titled 9.3: Types of Ore Deposits is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Dexter Perkins via source content that was edited to the style and standards of the LibreTexts platform.

Classification of Sandstone-Related Uranium Deposits

Sandstone type deposits are the most common type of uranium deposits in the world. A large variety of sub-types have been defined, based either on the morphology of the deposits (e.g., tabular, roll front, etc), or on the sedimentological setting (e.g., paleovalley, paleochannel, unconformity), or on tectonic or lithologic controls (e.g., tectonolithologic, mafic …

Classification of Ore Deposits

Modified Lindgren's classification: Modified in 1985 to conform with Lindgren's original basis for classification. Only the term "epithermal" was retained (Table 3)! Still a very popular classification! Evans (1997): classified ore deposits on the basis of their "Geologic Setting" (Table 4). The classification is very simple, but it ...

Classification of volcanogenic massive sulfide deposits in …

The recent surge in international research on VMS deposit classification and tectonic settings has prompted a reassessment of VMS mineralization within the North Qilian belt. ... Fan, L.M., Wan, Y.W. Isotope geochronology studies of the main geological events on the sulfide ore deposits and neighborhood in Baiyin, Gansu., 1998, He et al., 2006 ...

Classification of Mineral Deposits

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 deposit, Formation and Classification of

In 2011, Zhai Yusheng, a Chinese scholar in the study of ore deposits and regional metallogeny, divided the deposits into four categories according to their genesis: endogenic deposits, …

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 ...

Classification of Mineral Deposits | Geology for Investors

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. ... Surface sediments can also host a variety of mineral deposits. Ore minerals in these sediments are concentrated through the flow of surface fluids such as ...

Ore | Definition, Types & Examples

Ore deposits are classified based on how they form, whether as a result of an igneous, metamorphic, or sedimentary process, ... Classification of Metamorphic Rocks | Texture, Types & Examples ...

Ore Minerals | Formation, Genesis, Occurrence

Classification of ore minerals. Metallic ore minerals. Ore minerals can be classified based on various criteria, including their chemical composition, mineralogical properties, mode of occurrence, and geological setting. ... Finding and developing new ore deposits with economic viability becomes more challenging as accessible resources are ...

[PDF] Classification of Ore Deposits.

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. He adopts the view that an ore is a rock and should be studied as such, and that "ore deposition is a part problem of magmatic differentiation in its widest sense".

Supplement to Nature, October 4, 1930

Classification of Ore Deposits. Ore Deposits of Magmatic Origin : their Genesis and Natural Classification. By Prof. Dr. Paul Niggli. Translated from the original German edition by

Mineral Ore Deposits: Meaning, Origin and Types | Geology …

In this article we will discuss about:- 1. Introduction to Ore Deposits 2. Origin of Ore Deposits 3. Types. Introduction to Ore Deposits: Minerals form chief source of all the industrial metals and non-metals. The commonly used metals like aluminum, copper, iron, lead, zinc etc. are all manufactured using minerals as raw materials.

9.1.3: Mineral Deposits, Ore Deposits, and Mining

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 is not true. Many factors control the …