THE COMPARATIVE ANALYSIS OF PRECAMBRIAN GOLD RESERVES FORMATIONS OF CRYSTALLIZED SHIELDS
https://doi.org/10.17073/2500-0632-2017-2-11-25
Abstract
Gold reserves localized in Precambrian deposits are known in the most crystallized shields of the Earth. They are confined to Greenstone belts on the Canadian, Indian, Brazilian and Australian shields and represented by gold reserves deposits from the first ton to 1000 – 1500 tons (Pickle crow, nor-Acme, Homestake, etc. in North America, Kalgoorlie, Leonora and others in Western Australia). Despite the presence of trough structures of Precambrian age, some of which can be considered as analogues of Greenstone belts, the Aldan shield is quite specific of the named above. The comparison of ore fields help evaluate the genesis process of gold mineralization localized in Precambrian formations crystalline shields of the planet and thus define their similarity. There is a number of features that let evaluate the uniqueness of similarities: the anomaly of the magnetic field in the plan coincide with the gravity anomalies indicating the presence of dome uplifts of the basement; the rocks that led to the existence of anomalies of the magnetic field are similar in their geochemical features; the structures mapped by these anomalies are similar to the narrow anticlinal folds; the age of those structures is approximately the same; the identity of the ore-controlling factors and stratigraphic positions. These features allow to accurately assess the similarity of deposit named after P. Pinigin that has the largest gold resources in the world. Therefore, it gives the opportunity to hope for a significant expansion of the gold potential of the Precambrian age at the Aldan shield.
About the Authors
A. A. Syasko
Теchnical Institute (branch) of North-Eastern Federal University named after Ammosov
Russian Federation
Russian Federation
Leading Researcher, Cand. Sci. (Tech.)
678960, RS (Y) Neryungri, st. Kravchenko 16
N. N. Grib
Теchnical Institute (branch) of North-Eastern Federal University named after Ammosov
Russian Federation
Russian Federation
Deputy Director, Dr. Sci. (Tech.), Prof.
678960, RS (Y) Neryungri, st. Kravchenko 16
E. F. Redlikh
Теchnical Institute (branch) of North-Eastern Federal University named after Ammosov
Russian Federation
Russian Federation
Senior Lecture
678960, RS (Y) Neryungri, st. Kravchenko 16
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Review
For citations:
Syasko A.A., Grib N.N., Redlikh E.F. THE COMPARATIVE ANALYSIS OF PRECAMBRIAN GOLD RESERVES FORMATIONS OF CRYSTALLIZED SHIELDS. Mining Science and Technology (Russia). 2017;(2):11-27. (In Russ.) https://doi.org/10.17073/2500-0632-2017-2-11-25
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