Results 161 to 170 of about 2,787 (213)

Gold Metallogeny and Exploration

open access: yes, 1993
Within the last decade, the high and continuing demand for gold has prompted a global gold rush on a scale never before seen, not even in the heady days of Ballarat, California and the Yukon.
Foster, R. P.
openaire   +2 more sources

Zircons and granite metallogeny

Applied Earth Science, 2017
A global supply shortage of a number of key metals is forecast over the next few decades. There have been considerable advances in the application of in situ isotope and trace element analyses of a...
Gardiner, N. J.   +5 more
openaire   +3 more sources

Metallogeny in the Cenozoic

2015
The Cenozoic mineralization in structures associated with the Red River shear zone (RRSZ) in northern Viet Nam includes the following mineralized ore types TR- (U-Th)-Pb-Zn and TR- (U-Th) –Ba-F, Au-Cu in the Song Da rift zone. The origin of the mineralizations is spatially and (possibly) temporally related to the formation of Paleogene potassic mafic –
Trong-Hoa Tran   +7 more
openaire   +1 more source

Permian – Triassic Metallogeny

2015
Three mineralization complexes were formed during the Permian – Triassic period in the following order: PGE-Cu-Ni and V-Ti – Fe of magmatic origin; Au – sulfide and Sn – sulfide. The first ore complex including magma-origin Cu-Ni-(Pt) mineralization is related to ultramafic - mafic magmatic differentiation in structures of Song Da, Song Hien rifts ...
Trong-Hoa Tran   +7 more
openaire   +1 more source

Hypergene Metallogeny of the Urals

Lithology and Mineral Resources, 2004
The presented overview of hypergene metallogeny of the Urals is largely based on original data of the author. All bauxite, Co–Ni oxide–silicate, and high-grade ferromanganese our deposits, gold, platinum, and diamond placers, as well as brown coal, kaoline, refractory, and other economic-grade mineral deposits, currently mined in the Urals are hosted ...
openaire   +1 more source

Andean Metallogeny

2005
Abstract A variety of metals and deposit types define the metallogeny of the Andes from Colombia through Ecuador, Peru, and Bolivia to Argentina and Chile, although porphyry copper and epithermal gold deposits undoubtedly predominate and will continue to do so.
openaire   +1 more source

The Problems of Tin Metallogeny

1988
On the basis of the spatial and temporal distribution of tin deposits in the world and their relation to different kinds of igneous rocks, the sources of tin are discussed according to the available tin abundance in meteorites and ultramafic, mafic and felsic rocks in combination with the siderophile habit of tin.
openaire   +1 more source

Sulfur in the precambrian metallogeny

Geologische Rundschau, 1973
The economically important sulfide deposits of Precambrian age can be subdivided into two principal groups. The first group is represented by Ni- and Cu-bearing differentiates within either layered intrusions of the Sudbury-Bushveld type or within smaller ultramafic bodies (sometimes of greenstone belt association).
openaire   +1 more source

The Metallogeny of the British Isles

Quarterly Journal of the Geological Society of London, 1910
I. I ntroduction . T he recent development of the geographical method of studying ore-deposits is due to Prof. L. de Launay, who first pointed out its application in 1897. His later works on this plan include examinations of the ore-deposits of Africa, Italy,
openaire   +1 more source

Metallogeny of the Rapakivi granites

Mineralogy and Petrology, 1995
Two major types of ore deposits occur with Proterozoic rapakivi granite plutons: (1) greisen-, vein-, und skarn-type Sn(-W-Be-Zn-Cu-Pb) deposits associated with specialized late-stage granites, and (2) Fe oxide-Cu (-U-Au-Ag) deposits.
openaire   +1 more source

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