THE COMPARATIVE ANALYSIS OF PRECAMBRIAN GOLD RESERVES FORMATIONS OF CRYSTALLIZED SHIELDS


https://doi.org/10.17073/2500-0632-2017-2-11-25

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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

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

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

Senior Lecture

678960, RS (Y) Neryungri, st. Kravchenko 16



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Supplementary files

For citation: Syasko A.A., Grib N.N., Redlikh E.F. THE COMPARATIVE ANALYSIS OF PRECAMBRIAN GOLD RESERVES FORMATIONS OF CRYSTALLIZED SHIELDS. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2017;(2):11-27. https://doi.org/10.17073/2500-0632-2017-2-11-25

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