As an introduction to this compilation of the world's major gold deposits and provinces, this paper provides a thumbnail sketch of each gold deposit type, including geologic and …

The Jiagantan gold deposit can best be classified as an epizonal orogenic gold deposit owing to the possible metamorphic origin of Au, As, S, and other associated elements. ... western segment of ...

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 ...

Timing of the major Baiyun gold deposit (~ 70 t Au) in the northeastern North China Craton is controversial. A textural and geochronological study of high-grade gold ores identifies three generations of xenotime (Xtm-1, Xtm-2 and Xtm-3), even in single grains. The oldest Xtm-1, in grain cores, is of metamorphic origin, with very high U and U/Th ratios, and …

Within the gold deposits, segments of the Chirano lode horizon comprise strongly altered tonalite and tonalite-derived cataclasite, stockworks of quartz veinlets, and 3 cm Grid North True North 84 Dominantly …

Distribution of the different types of gold deposits within a segment of crust (modified from [71] . Figure 7. (a) Distribution of orogenic gold deposits; (b) Evolution of the growth of the continental crust over geologic time (modified after [5] [72] ). The grey bands represent the distribution of the supercontinents after [73] .

These type of gold deposit is most commonly associated with small amounts of disseminated pyrite or pyrrhotite in well-developed quartz veins. These deposits have a world production of at least 9,900 m.t., and account for the second largest amount of gold production of any significant mineral deposit type after the Witwatersrand-type paleo ...

The giant Jiagantan gold deposit was newly discovered in the western segment of the West Qinling orogen, representing a typical sediment-hosted disseminated gold deposit in orogenic belt. ... The gold deposits in the West Qinling orogen are mostly classified as orogenic or Carlin-type deposits (or Carlin-like; Mao et al., 2002, Chen and …

Phanerozoic orogenic gold deposits worldwide are commonly considered to be formed from metamorphic devolatilization of marine carbonaceous sedimentary rocks. Here we show that the Yindongpo gold deposit from the Qinling orogen (central China) is genetically associated with the metamorphism of volcanic rocks during the late …

Internal textures, multiple sulfur isotopic compositions, and contents of gold, selenium, and molybdenum of ore-related pyrites from a Neoarchean carbonate-facies BIF-hosted gold deposit in Quadrilátero Ferrífero were investigated to elucidate the source(s) of sulfur. Sodium hypochlorite etching and BSE imaging revealed pervasive zoning in …

ORIGINAL ARTICLE Timing of mineralization at the Shihu gold deposit in the middle segment of the Taihang Mountain, China Chao Chen1 • Shuyin Niu1 • Fang Wang1 • Fuxiang Zhang1 • Qinglian Zhang1 • Baojun Ma1 • Aiqun Sun1 • Jianzhen Zhang1 • Yaqi Cao1 • Xiaoqing Zhang1 Received: 23 November 2016/Revised: 17 March …

THIS Gold in 2000volume is organized around a classification of hypogene gold deposits that emphasizes their tectonic setting and relative time of formation compared to their host rocks and other gold deposit types (e.g., Sawkins, 1972, 1990; Groves et al., 1998; Kerrich et al., 2000).The temporal division of orogenic gold deposits into Archean, Proterozoic, …

The structure of vein-type gold deposits is defined by the shapes and geometrical relationships of mineralized bodies, the form of the mineralization making up these bodies, and the sequence of vein-forming events. ... External form of shear zones Most shear zones comprise an array of differ- ently-oriented segments such that as a …

Based on an analysis and summary of available age data from gold deposits in the Xiaoqinling and other relevant areas, combined with a study of the tectonic evolution of east China, the authors suggest that the major ages of gold mineralization in the Xiaoqinling area range from ca. 130 to 120 Ma.

In the northwestern segment of the Jiaobei Terrane, the world-class gold deposits of Sanshandao in the west, through Jiaojia, to Linglong in the east define a broadly E–W corridor. This corridor links a series of east-verging jogs on ore-controlling NNE-trending oblique-slip faults that are subparallel to an lithospheric-scale Tan-Lu Fault to ...

Sediment-hosted gold deposits are recognized in the Great Basin province of the western United States and in China along with a few recognized deposits in Indonesia, Iran, and Malaysia. Three new grade and tonnage models for sediment-hosted gold deposits are presented in this paper: (1) a general sediment-hosted gold type …

Lode gold deposits are among the most economically important types of gold deposits in the world. Globally, they formed mainly in three time intervals, 2.8 to 2.5 Ga, 2.1 to 1.8 Ga, and 700 Ma to the present. Sources of ore-forming fluids and other components are of critical importance in a better understanding of the genesis and the …

With more than 11,000 t of gold resources, the Central Asian orogenic belt is the most significant gold deposit belt in the world. The majority of the orogenic belt's gold resources are found in a…

This Special Publication Recent Advances in Understanding Gold Deposits: from Orogeny to Alluvium offers a cross-section of some specific techniques to investigate a variety of …

The Jinchang gold deposit has been extensively studied, but precise dates for its formation are debated. Native gold mainly occurs as inclusions within pyrite and quartz. In this study, we ...

The Tokuzbay gold deposit is one of the represented gold deposits in Altai Orogen and the ores hosted in metamorphic rocks and magmatic dikes in a shear zone. Ore hosting magmatic dikes are intruded at Devonian, representing the product of the subduction-accretion process of the Altai Orogen.However, the ores are mineralized at …

In the northwestern segment of the Jiaobei Terrane, the world-class gold deposits of Sanshandao in the west, through Jiaojia, to Linglong in the east define a broadly E–W corridor. This corridor links a series of east-verging jogs on ore-controlling NNE-trending oblique-slip faults that are subparallel to an lithospheric-scale Tan-Lu …

The fact that every gold deposit is different from every other gold deposit also makes finding a new one even more difficult. Studies over the centuries have shown that gold is about 5 times more abundant in rocks called "mafic" or "ultramafic" than in other types of rock. The crustal average value of a metal is called the "Clark ...

The Early Cretaceous Shihu gold deposit is located in the northern segment of the Taihang Tectonic belt, which extends across the central part of the North China Craton. The deposit is hosted predominantly by the Archean metamorphic crystalline units, and is spatially and temporally related to quartz diorite porphyry present …

The Mahuagou gold deposit is among the most important gold deposits in the core of the Huangling Anticline. However, the geochemical exploration on the surface of the mining area presents challenges due to the thin overburden. This paper focuses on the overburden soil of the Fengxiangshugou (FXS)-Mahuanggou (MHG) section as the …

The final gold composition of the deposit is partially controlled by loss of gold during mass-wasting of the material, with gold depletion most prevalent in blocks formed at beehive-type chimneys. The BVF demonstrates that the overall gold content of a massive sulfide deposit is the sum of basement, precipitation, and surface processes.

Gold is either the only economically important metal or a major by-product in 11 well-characterized deposit types—paleoplacer, orogenic, porphyry, epithermal, Carlin, placer, reduced intrusion ...

The Daduhe gold belt is in the western Sichuan Province, on the western margin of the Yangtze Craton (Fig. 1 a).The northern segment of the belt constitutes a part of the Songpan-Ganzi fold belt, whereas the southern segment is confined by the Panxi (Panzhihua-Xichang) rift zone (Fig. 1 b).The western margin of the Yangtze Craton …

Orogenic gold deposits in the western segment of the SQO and the southern North China Block exhibit ore-forming element associations of As–Sb–Au and Au–Mo, respectively. The spatial morphology of anomalies of ore-forming elements associated with magmatic rocks and polymetallic deposits is nearly circular or irregular, ...

The formation of many hydrothermal gold deposits is closely related to iron-rich rocks. The host rocks of the Madiyi Formation of the Mid- to Late Neoproterozoic Banxi Group for the Woxi Au (-Sb-W) deposit, which is located in western Hunan Province of the western Jiangnan Orogen, South China, is rich in hematite, which provides a good …