Challenges in maximising the value from

Examples of epithermal deposits in the Asia-Pacific region include Cracow, Pajingo, Kencana, Tolukuma, Porgera, Mt Kare, Misima, Martabe, Mt Muro, Lihir, Kainantu, Gosowong and Hidden Valley. 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.

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Characteristics of a Low-Sulfidation Epithermal

Characteristics of a Low-Sulfidation Epithermal Deposit in the River Reef Zone and the Watuputih Hill, the Poboya Gold Prospect, Central Sulawesi, Indonesia: Host Rocks and Hydrothermal Alteration by Syafrizal 1, Tomy Alvin Rivai 2, Kotaro Yonezu 2, Damar Kusumanto 3, Koichiro Watanabe 2 and Arie Naftali Hawu Hede 1,*

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EPITHERMAL GOLD-SILVER and PORPHYRY COPPER-GOLD EXPLORATION

sulphidation epithermal Au-Ag deposits display two fluid flow trends and zoned deposit types, within either arcs or strongly extensional settings. The arc deposits tend to be sulphide-rich with a progression in styles, in time and from deep to shallower crustal levels, as quartz-sulphide Au ± Cu, to carbonate-base metal Au, and then epithermal

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EPITHERMAL DEPOSITS - YouTube

21-12-2016· EPITHERMAL DEPOSITS Vidya-mitra. Loading 1- Important Characteristics of VMS Deposits for Deep Exploration- Alan Galley, Epithermal Au Deposits,

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Epithermal Gold for Explorationists | AIG Journal

In suitable terrains many adularia-sericite epithermal gold-silver deposits were identified by gold panning and the identification of characteristic banded quartz in float (e.g., Tolukuma, Chatree), while in poorly prospected regions, sampling of outcropping quartz veins has led to the identification of new deposits (e.g., Pajingo, Cerro Vanguardia, Esquel).

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Hydrothermal mineral deposit - Wikipedia

Hydrothermal mineral deposits are divided into six main subcategories: porphyry, skarn, volcanogenic massive sulfide (VMS), sedimentary exhalative (SEDEX), and epithermal and Mississippi Valley-type (MVT) deposits. Each hydrothermal mineral deposit has different distinct structures, ages, sizes, grades, geological formation, characteristics and

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Characteristics and mineralization age of the

The Fukusen No. 1 vein is located in the southeastern part of the Yamada deposit, Hishikari epithermal gold deposits, southern Kyushu, Japan. 40 Ar/ 39 Ar plateau ages of adularia from the margin and the center of the Fukusen vein are determined to be 0.617 ± 0.024-Ma and 0.606 ± 0.009-Ma, respectively. The Fukusen No. 1 vein shows banding structure composed mainly of quartz, adularia and

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Epithermal Gold for Explorationists

Corbett: Epithermal Gold For Explorationists Paper 2002-01, April 2002 5 mineralogical differences used to categorise the styles of low sulphidation epithermal gold deposit styles (Corbett and Leach, 1998) . The third order in the classification of low sulphidation epithermal gold deposits

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Characteristics of some silver-, and base metal

Lithotectonic, mineralogical, and geochemical data on two silver- and base metal-bearing deposits from Peru and two from Mexico are compiled to facilitate comparisons with other epithermal deposits. Silver and base metal-bearing deposits of Mexico and Peru constitute an important portion of the world silver production derived from shallow, vein-type deposits hosted in volcanic rocks.

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EPITHERMAL PRECIOUS METAL DEPOSITS: PHYSICOCHEMICAL

EPITHERMAL PRECIOUS METAL DEPOSITS: PHYSICOCHEMICAL CONSTRAINTS, CLASSIFICATION CHARACTERISTICS, AND EXPLORATION GUIDELINES by Donald A McIver This dissertation was prepared in accordance with specifications laid down by the univeristy and was completed within a period of ten weeks full-time study. Dissertation submitted in partial

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Geological and mineralization characteristics of

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. Discovered deposits along the belt are commonly associated with Cenozoic magmatism ranging between 52 and 18 Ma in age, formed due syn- to post

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EPITHERMAL PRECIOUS METAL DEPOSITS: PHYSICOCHEMICAL

EPITHERMAL PRECIOUS METAL DEPOSITS: PHYSICOCHEMICAL CONSTRAINTS, CLASSIFICATION CHARACTERISTICS, AND EXPLORATION GUIDELINES by Donald A McIver This dissertation was prepared in accordance with specifications laid down by the univeristy and was completed within a period of ten weeks full-time study. Dissertation submitted in partial

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Epithermal | Mining Geology HQ

Epithermal deposits are important sources of gold and silver, representing about 30% of total gold metal production per year. There are two principal styles of epithermal mineralization: low sulphidation (LS) and high sulphidation (HS) epithermal deposits with an intermediate category sometimes recognized.

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Mineral deposit - Hydrothermal solution |

Mineral deposit - Mineral deposit - Hydrothermal solution: Hydrothermal mineral deposits are those in which hot water serves as a concentrating, transporting, and depositing agent. They are the most numerous of all classes of deposit. Hydrothermal deposits are never formed from pure water, because pure water is a poor solvent of most ore minerals.

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characteristics of epithermal deposits -

Characteristics of high-sulfidation epithermal deposits, and their relation to magmatic fluid Low-sulfidation epithermal gold deposits in Java, LS epithermal gold deposits in Java show typical characteristics of quartz veins/ vein zones with crustiform-colloform textures, relatively high Au (Ag/Au 15.8), less sulfides, less base metals and low salinity fluids.

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Descriptive models for epithermal gold-silver

Epithermal gold-silver deposits are vein, stockwork, disseminated, and replacement deposits that are mined primarily for their gold and silver contents; some deposits also contain substantial resources of lead, zinc, copper, and (or) mercury. These deposits form in the uppermost parts of the crust, at depths less than about 1,500 meters below the water table, and at temperatures below about

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epithermal - Wiktionary

26-11-2018· epithermal (comparative more epithermal, superlative most epithermal) Describing deposits of minerals formed from warm water at shallow depth Describing neutrons of kinetic energy greater than that of thermal motion; Anagrams . hemipteral

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GEOLOGY AND CHARACTERISTICS OF LOW

Senepo area is one of several epithermal mineralization prospects in Southern Mountains of Java Island. This study is aimed to investigate the geological framework and hydrothermal alteration of the prospect as well as to characterize the low sulphidation (LS) epithermal vein including vein textures, ore mineral, ore chemistry and hydrothermal fluid that are responsible for the formation of

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Geophysical Characteristics of Adularia-Sericite

Geophysical Characteristics of Adularia-Sericite Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE E. MORRELL,†,* CORINNE A. LOCKE, JOHN CASSIDY, AND JEFFREY L. MAUK School of Geology, Geography, and Environmental Science, University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New

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Porphyry copper deposit - Wikipedia

Characteristics of porphyry copper deposits include: The orebodies are associated with multiple intrusions and dikes of diorite to quartz monzonite composition with porphyritic textures.; Breccia zones with angular or locally rounded fragments are commonly associated with the intrusives. The sulfide mineralization typically occurs between or within fragments.

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