(PDF) CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL DEPOSITS, AND
Main geological characteristics of 14 selected high-sulfidation epithermal deposits Deposit/district, location Age (Ma) Motomboto, Indonesia 1.9 Nalesbitan, Philippines Lepanto, Philippines Pliocene Chinkuashih, Taiwan 1.3-1.0 1.5-1.2 Zijinshan, China -94 Nansatsu, Japan 5-3.5 Summitville, Colorado 22.5 Metals, (tonnes)1 Local volcanic setting ...
Mineralization and metallogenic model of the Laurani high
Epithermal deposits, proposed initially by Lindgren 1 to describe those formed at low temperatures in the shallow part, are important sources of metals of gold, silver, copper, zinc, lead and ...
Epithermal Deposits
Characteristics and genesis of epithermal gold deposits. In: Hagemann, S.G., Brown, P.E. (Eds.), Gold in 2000, Reviews in Econ. Geol. vol. 13. Society of Economic Geology, Boulder, CO, pp. …
Tectonic setting of epithermal deposits in mainland China
Geological and geochemical characteristics of the epithermal deposits are summarized and metallogenic trends are revealed. The ore-forming fluid-systems were dominated by meteoric water occasionally with inputs of magmatic fluid. Ore metals were mainly sourced from host-rocks and parent intrusions, with many deposits formed in epithermal-to ...
(PDF) Characteristics of high-sulfidation epithermal deposits…
In Magmas, Fluids, and Ore Deposits, Ed.: J.FM. Thompson, Mineralogical Association of Canada Short Course Vol. 23 (1995) Chapter 19 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, …
Epithermal
Key minerals and characteristics of HS epithermal deposits include the following: Alternation zone: Aerially extensive and visually prominent due to acidic alteration of volcanics to bleached clays. Alteration minerals: Alunite ( KAl 3 (SO 4 ) 2 …
Types, Characteristics, and Geodynamic Settings of Mesozoic Epithermal
4. Typical epithermal gold deposits 4.1. General characteristics of the epithermal gold deposits in eastern China. The presently known epithermal gold deposits of the Mesozoic in eastern China occur in a large deposit, with the largest containing approximately 70 t …
Epithermal Gold Deposits: STYLES, CHARACTERISTICS AND EXPLORATION
See SEG Newsletter No. 14, pages 12-13 for that discussion. In the spirit of encouraging the development of appropriate models of prospects during exploration, the authors provide general patterns and ranges of characteristics for epithermal deposits in which gold is the main economic metal. —HH]
Low-sulfidation epithermal gold deposits in Java, Indonesia
The deposition of 10 LS epithermal deposits in Java took place in the time span between 16 Ma (Early Miocene) and 2 Ma (Pleistocene). All deposits/prospects exhibit typical LS epithermal characteristics. The timing of their deposition is coincident with the Mio-Pliocene magmatic arc activities, and even probably continue on to Pleistocene.
CHARACTERISTICS OF HIGH-SULFIDATION …
In Magmas, Fluids, and Ore Deposits, Ed.: J.F H. Thompson, .-Mineralogical Association of Canada Short Course Vol. 23 (1995) Chapter 19 CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL
Deep Structure of Epithermal Deposits in Youxi Area: …
Epithermal deposits represent a significant category of gold occurrences, with their subsurface structure playing a key role in reserve assessments. Fujian Province, characterized by extensive Mesozoic volcanic activities, stands out as a noteworthy region for shallow hydrothermal mineralization in China. This paper focus on the Youxi area within Fujian …
(PDF) Epithermal ore deposits: First-order features relevant …
Therefore, in this study, we focus on the geochemical characteristics of ore and alteration zones in the largest low-sulfidation (LS) epithermal Au–Ag deposit in Thailand, namely Chatree deposit.
GEOLOGY AND CHARACTERISTICS OF LOW …
the key textures of low sulfidation epithermal deposit (Khant et al., 2012). This study is ... hydrothermal alteration as well as characteristics of the epithermal vein in Senepo Area, Slahung ...
Characteristics and genesis of epithermal gold deposits
Semantic Scholar extracted view of "Characteristics and genesis of epithermal gold deposits" by D. Cooke et al. Skip to search form Skip to main content Skip ... @inproceedings{Cooke2000CharacteristicsAG, title={Characteristics and genesis of epithermal gold deposits}, author={David R. Cooke and Stuart F. Simmons and Steffen G. Hagemann and ...
CHARACTERISTICS OF HIGH-SULFIDATION …
In Magmas, Fluids, and Ore Deposits, Ed.: J.FM. Thompson, Mineralogical Association of Canada Short Course Vol. 23 (1995) Chapter 19 CHARACTERISTICS OF HIGH-SULFIDATION EPITHERMAL
Detachment-fault-related Mineralization
Epithermal deposits can be distinguished from detachment-fault-related deposits by their characteristic ore mineralogy, alteration minerals and patterns, geochemical signatures, and fluid-inclusion compositions, as described in the deposit model for hot spring Au-Ag (Berger, 1986b). Principal distinguishing characteristics are the following:
Geochemical characteristics of igneous rocks associated with epithermal …
Newly synthesized data indicate that the geochemistry of igneous rocks associated with epithermal mineral deposits varies extensively and continuously from subalkaline basaltic to rhyolitic compositions. Trace element and isotopic data for these rocks are consistent with subduction-related magmatism and suggest that the primary source magmas were generated …
Chapter 7 Exploration for Epithermal Gold Deposits
and review the characteristics of epithermal deposits, includ-ing their tops, bottoms, and sides. In this context, the first goal during the assessment of a prospect is to determine if it is epithermal, and if so, its style, as this will determine in part the questions to …
Epithermal gold deposits: Styles, characteristics, …
Hydrothermal alteration is a common feature in epithermal mineral deposits and exhibits similar characteristics in typical epithermal deposits worldwide [8,10, 11]. The hydrothermal system that ...
(PDF) Characteristics of high-sulfidation …
The main objective of this review is to summarize the characteristics of HS mineralization formed primarily within the epithermal environment, though recognizing the potential for HS...
(PDF) Exploration for Epithermal Gold Deposits
There are characteristic mineral textures and assemblages associated with epithermal deposits and, coupled with fluid inclusion data, they indicate that most low-sulfidation and high-sulfidation ...
simmons el al
Deposits and districts, comprising one or more orebodies, cover areas from <10 to ~200 km 2. Epithermal deposits have been classified on the basis of alteration and gangue mineral assemblages, metal contents, sulfide contents, and sulfide mineral assemblages, and each classification scheme has its merits.
(PDF) Exploration for Epithermal Deposits
There are characteristic mineral textures and assemblages associated with epithermal deposits and, coupled with fluid inclusion data, they indicate that most low-sulfidation and high-sulfidation ...
Geological characteristics of epithermal precious and base metal deposits
Epithermal deposits are important sources of gold and silver that form at <1.5-km depth and <300°C in high-temperature, mainly subaerial hydrothermal systems. Such hydrothermal systems commonly develop in association with calc-alkaline to alkaline magmatism, in volcanic arcs at convergent plate margins, as well as in intra-arc, back-arc, and postcollisional rift …
Epithermal gold deposits. Styles, characteristics …
Here we highlight the general characteristics of the two principal styles of epithermal mineralization in which gold is the dominant economic metal. We base our generalizations on observations...
Geochemistry and Fluid Inclusion of Epithermal Gold-Silver Deposits …
The work focuses on five epithermal Au-Ag deposits of the Kamchatka volcanogenic belts: Rodnikovoe, Baranyevskoe, Kumroch, Lazurnoe (adularia-sericite type–Ad-Ser) and Maletoyvayam (acid-sulfate type–Ac-Sul). The geochemical characteristics of the deposits were presented based on the results of ICP-OES and fire-assay analysis. The …
Epithermal Gold Deposits : their characteristics & modeling
• The term 'Epithermal' defined by Lindgren (1922, 1933) includes a broad range of precious metals (+ tellurides or selunides), base metals, Hg and Sb deposits, formed by aqueous fluids …
Geophysical Characteristics of Low-Sulfide Epithermal Gold …
After comparing several globally typical epithermal gold deposits, we conclude that the findings presented in this paper encapsulate the geophysical traits of an un-eroded, low-sulfidation epithermal gold deposit. ... "Geophysical Characteristics of Low-Sulfide Epithermal Gold Mineralized Bodies—A Case Study of the Alinghe Mining Area on the ...
GEOCHEMICAL AND TECTONIC INSIGHTS INTO PORPHYRY COPPER DEPOSITS…
Epithermal ore deposits form at shallow depth. This conclusion was initially based on geologic reconstructions, ore mineralogy and related textures (Lindgren, 1933).
Characteristics and genesis of epithermal gold deposits
Summary 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.There are two classes of epithermal deposits which can be discriminated in terms of their geologic environments, alteration mineralogy, and fluid …