Gold has been produced at many places on the headwaters of the Clark Fork of the Columbia River, particularly in the vicinity of Butte. Placer production from the Butte district, however, has been over-shadowed by the total output of byproduct gold recovered from the mining of lode deposits ...
Placer deposits provided early man with the first samples of gold and thereafter have accounted for a large production of the metal. If we include the Witwatersrand and other quartz-pebble conglomerates as fossil placers or modified placers, the placer type of auriferous deposit has provided more ...
The Dian-Qian-Gui "Golden Triangle" area of southwest China has the second-largest concentration of Carlin-type gold deposits in the world, containing more than 800 tonnes of Au (25.7 Moz). All of the deposits are located along long-lived, deep-penetrating crustal structures inherited from Dev...
A paleogeographic map of the Gondwana supercontinent in its Middle Cambrian configuration appears as a powerful tool for predicting the location of the majority of the Paleozoic orogenic gold provinces in the world, as they develop within mobile belts along its border. The three South American belts...
A comprehensive genetic model for the world-class Dachang gold deposit would help in understanding the genesis and distribution patterns, which is also critical for developing successful future exploration strategies to identify other orogenic gold deposits in the BHSG and in orogenic belts worldwide. ...
(c) Regional geological map of the JGMB and distribution of major gold deposits [14,15]. Gold deposits: 1. Songjianghe; 2. Liupiye; 3. Bajiazi; 4. Jiapigou; 5. Erdaogou; 6. Sidaocha; 7. Sandaocha; 8. Xiaobeigou; 9. Daxiangou; 10. Laoniugou; 11. Caiqiangzi; 12. Banmiao...
Qixia is positioned in the northern part of the Jiaodong Peninsula, located between the Zhaoyuan-Pingdu fault and the Muping-Jimo fault. It lies adjacent to world-class super-large gold deposits such as Linglong, Jiaojia, Xincheng, and Sanshandao. The exposed strata in this region are predomi...
The iShares Gold Trust Micro (the 'Trust') seeks to reflect generally the performance of the price of gold.The iShares Gold Trust Micro is not an investment company registered under the Investment Company Act of 1940, and therefore is not subject to the
This has been made possible, firstly, by marked improvements on analytical sensitivity over those previously available and secondly, of particular importance to exploration in Australia, by a better understanding of the distribution of Au in the......
By 1905 the Tonopah and Goldfield deposits in Nevada and the Alaskan placer deposits had been discovered, and United States gold production for the first time exceeded 4 million troy ounces a year--a level maintained until 1917. During World War I and for some years thereafter, the annual ...