characteristics of epithermal deposits

Characteristics and Genesis of Epithermal Gold Deposits ...

This paper summarizes the characteristics of epithermal gold deposits and discusses potential ore deposition mechanisms. Epithermal deposits mostly form at shallow crustal levels (<1 km) in subaerial volcanic settings.

Get Price

VEIN DEPOSITS - Earth Science

Characteristics Vein deposits include most gold mines, many large silver mines and a few copper and lead-zinc mines..

Get Price

Models and Exploration Methods for Major Gold Deposit Types

Oxidized intrusion-related deposits, including porphyry, skarn, and high-sulfidation epithermal deposits, are associated with high-level, oxidized porphyry stocks in magmatic arcs. Other important deposit types include Carlin, low-sulfidation epithermal, Au-rich VMS and Witwatersrand deposits.

Get Price

CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL DEPOSITS ...

CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL DEPOSITS, AND THEIR RELATION TO MAGMATIC FLUID

Get Price

Geological Characteristics of Epithermal Precious and Base ...

Epithermal mineralization can occur in large areas, with orebodies that range in shape, size, and grade, and lie easily concealed beneath blankets of clay alteration or unaltered volcanic deposits. Efficient exploration requires integration of all geological, geochemical, and geophysical data, from regional to deposit scale.

Get Price

characteristics of epithermal deposits

Characteristics of epithermal gold deposits Epithermal gold deposits are formed at shallow depths of up to 1.5 km below the surface of the earth. The mineralisation is deposited in and along openings in the host rock from ascending magmatic fluids. Geophysical Characteristics of Adularia-Sericite Epithermal Gold-Silver Deposits

Get Price

characteristics of epithermal deposits - Popular Education

Characteristics of. Epithermal Ore Deposits. Epithermal Deposits: Summary Characteristics. Metals. Au, Ag (Hg, Cu,... Read More. Models and Exploration Methods for Major Gold Deposit Types.pdf. and high-sulfidation epithermal deposits, are associated with high-level, oxidized porphyry stocks .... BIF, have similar characteristics and have formed by similar. Read More. Epithermal Gold Deposits ...

Get Price

Epithermal Gold and Silver in Newfoundland and Labrador

Characteristics of HS epithermal Au-Ag deposits  The alteration suite of minerals formed in low pH, acidic conditions include, e.g., kaolinite, dickite, alunite and pyrophyllite.

Get Price

Characteristics and controls of the largest porphyry ...

2007-05-09· These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation style. Most regional and local characteristics of the largest porphyry and epithermal deposits fail to explain convincingly their extremely high gold contents.

Get Price

characteristics of epithermal deposits - Popular Education

Characteristics of. Epithermal Ore Deposits. Epithermal Deposits: Summary Characteristics. Metals. Au, Ag (Hg, Cu,... Read More. Models and Exploration Methods for Major Gold Deposit Types.pdf. and high-sulfidation epithermal deposits, are associated with high-level, oxidized porphyry stocks .... BIF, have similar characteristics and have formed by similar. Read More. Epithermal Gold Deposits ...

Get Price

Types, Characteristics, and Geodynamic Settings of ...

epithermal gold deposits are related to calc-alkaline granite porphyry – volcanic rocks, whereas some, which are usually rich in tellurium, are related to alkaline vol- canic rocks or intrusive rocks, such as the Guilaizhuang deposit ( Hu et al., 2006 ). Characteristics of representative deposits are given here. The ore and gangue mineralogy of these deposits are given in Table 1 . Fig. 1 ...

Get Price

characteristics of epithermal deposits

Epithermal Gold Deposits Characteristics. The word epithermal comes from the Greek words for "nearby heat" referring to the fact that epithermal deposits form very close to the surface of the crust, by definition, within a thousand meters.get price. Characteristics and Genesis of Epithermal Gold Deposits . This paper summarizes the characteristics of epithermal gold deposits and discusses ...

Get Price

Geophysical Characteristics of Adularia-Sericite ...

expressions of adularia-sericite epithermal deposits in the Waihi-Waitekauri-Wharekirauponga region, including a de-tailed study of the Waihi district. These geophysical data re- veal the extent and geometry of at least ten hydrothermal sys-tems that formed at different times over a period of less than 1 m.y. and deposited over 10 million ounces (Moz) Au in less than 200 km3 of the shallow ...

Get Price

Epithermal Gold Deposits Characteristics

A fascinating group and characteristic of Epithermal gold deposits is that you can virtually see them forming today, simply by visiting hot springs. Like those with Yellowstone in Wyoming or Rotorua in New Zealand. This photo is Pamukkale, low sulfidation hot springs in Turkey, with a beautiful white centre terraces. If you like hot springs, you'll love epithermal. Let's start where we ...

Get Price

Geological and mineralization characteristics of the ...

2019-11-22· Kestanelik epithermal gold deposit is situated in the Biga Peninsula, which hosts numerous metallic deposits belonging to the Tethyan Metallogenic Belt. In the Biga peninsula the Tethyan Metallogenic Belt is represented by a Neo-Tethyan suture zone.

Get Price

Genetic Links Between Extensional Tectonomagmatism and the ...

Toggle navigation University of Nevada, Reno Login; Toggle navigation

Get Price

(PDF) Epithermal gold deposits: Styles, characteristics ...

A common structural control on most epithermal-type deposits is extensional faulting and brecciation, either generated regionally by tectonic stress fields (as in the case of the Basin and Range)...

Get Price

Epithermal Gold Deposits : their characteristics & modeling

Each ore deposit is unique like a person's finger print This uniqueness arises out of : ¾fundamental differences in processes and environments ¾local, site-specific geologic variations ‰And produces an extremely large variation in characteristics

Get Price

The geological characteristics, geochemical signature and ...

GEOLOGICAL CHARACTERISTICS The key geological characteristics of porphyry copper-(gold) systems include distal to proximal intrusive dykes and small causal porphyritic stocks, with hornblende occurring as phenocrysts and in the groundmass, which is characteristic of a hydrous magma.

Get Price

characteristics of epithermal deposits

Characteristics of epithermal gold deposits Epithermal gold deposits are formed at shallow depths of up to 1.5 km below the surface of the earth. The mineralisation is deposited in and along openings in the host rock from ascending magmatic fluids. Geophysical Characteristics of Adularia-Sericite Epithermal Gold-Silver Deposits

Get Price

Descriptive models for epithermal gold-silver deposits ...

Historically, these deposits have been an important source of gold and silver and are estimated to contain about 8 percent of global gold. The wide range of tonnage-grade characteristics makes epithermal gold-silver deposits an attractive target for small and large exploration and mining companies.

Get Price

(PDF) Epithermal gold deposits. Styles, characteristics ...

1995-01-01· It has subsequently been refined withfluid inclusion data to indicate that epithermal ores form over the temperature range of <150 o C to ~300 o C, from the surface to as deep as 1 to 2 km.

Get Price

keynote Structural Controls to, and exploration for ...

Epithermal deposits develop by ore fluid evolution during structurally controlled flow. High sulphidation epithermal ore fluids display characteristic evolution and vertical separation between the magmatic source and epithermal environment of ore deposition. The structural control therefore represents an essential element to facilitate the flow of rapidly rising volatile (SO2) rich magmatic ...

Get Price

An Overview of Epithermal Gold Deposits | INN

Epithermal deposits are distinctive from low-grade bulk tonnage deposits such as porphyries in that they are typically high-grade, small-size deposits. A few other characteristics distinguish...

Get Price

Physical setting and characteristics of high-sulfidation ...

The physical and tectonic setting of high-sulfidation epithermal deposits is distinct from low-sulfidation epithermal deposits such as El Peñón (Chile), Fruta del Norte (Ecuador) or those of Patagonia. The latter range to significantly older ages (Jurassic to early Eocene), occur at lower elevations and were emplaced in extensional settings.

Get Price

Geophysical Characteristics of Adularia-Sericite ...

These gold-silver deposits consist predominantly of andesite-hosted quartz veins and are characterized by alteration haloes of per- vasive clay alteration, potassium metasomatism, magnetite destruction, and sulfide mineralization, up to 15 km2in areal extent (e.g., Simpson et .

Get Price

Miocene and Early Pliocene Epithermal Gold-Silver Deposits ...

The contrasting types and characteristics of epithermal deposits and their affinities with as- sociated igneous rocks suggest that a genetic relationship is present between these Au-Ag deposits and their temporally associated magmatism, although available data do not prove this relationship for most low-sulfida- tion deposits.

Get Price

Epithermal Gold Deposits Characteristics - SYSSLA

Characteristics Of Epithermal Deposits And The tectonic backgrounds of epithermal deposits are mainly island arc and arc-back extension belt. Most deposits of the type are formed in Cenooic with minority in Mesooic and Palaeooic. The structure of ore are of vein stockwork and breccia.

Get Price

Characteristics of High Sulphidation Epithermal Gold ...

Characteristics of High Sulphidation Epithermal Gold Deposits of the Mio-Pliocene Age Volcanic Belt, Chile and Argentina February 2017 Mirasol Resources Ltd. 910-850 West Hastings Street. Vancouver, BC. Canada V6C 1E1 (604) 602-9989. TSXV - MRZ. For further information contact: Stephen Nano . [email protected] or Damien Koerber . damien.koerber ...

Get Price

characteristics of high-sulfidation epithermal deposits ...

CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL DEPOSITS, AND THEIR RELATION TO MAGMATIC FLUID Antonio Arribas Jr. Mineral Resources Department, Geological Survey ofJapan, 1-1-3 Higashi, Tsukuba 305, Japan INTRODUCTION A consequence of the increased exploration for gold deposits during the late 1970s and early 1980s was the revision of the classification of epithermal deposits .

Get Price