Gold occurrence of Jiaojia gold mine in Shandong province

The microscopy and scanning electronic microscopy (SEM) were used to study the gold occurrence of Jiaojia gold mine, Shandong province. The results show that the gold-bearing minerals are composed of pyrite, chalcopyrite, gangue, sphalerite and galena. 77.12% of gold minerals are the sulphides and 2...

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Veröffentlicht in:Transactions of Nonferrous Metals Society of China 2011-09, Vol.21 (9), p.2072-2077
Hauptverfasser: YANG, Hong-ying, WANG, Si-hui, SONG, Xiang-ling, PAN, Hao-dan, MA, Peng-cheng
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container_issue 9
container_start_page 2072
container_title Transactions of Nonferrous Metals Society of China
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creator YANG, Hong-ying
WANG, Si-hui
SONG, Xiang-ling
PAN, Hao-dan
MA, Peng-cheng
description The microscopy and scanning electronic microscopy (SEM) were used to study the gold occurrence of Jiaojia gold mine, Shandong province. The results show that the gold-bearing minerals are composed of pyrite, chalcopyrite, gangue, sphalerite and galena. 77.12% of gold minerals are the sulphides and 22.88% are the gangues. The gold occurrence is composed of 60.28% fissure gold, 21.63% inclusion gold and 18.09% crystal fractured gold. The morphology of gold mineral is composed of sphere, triangle, rectangle, strip and erose. The Jiaojia gold mineral owns large grain size range from 3-5 μm to 100 μm. 1.5% of gold grains is more than 0.104 mm, 5.26% is 0.074-0.104 mm, 23.31% is 0.043-0.074 mm, 3.76% is 0.043-0.037 mm and 64.29% is less than 0.037 mm. The occurrence of gold mineral is composed of native gold, electrum, native silver, iron-bearing native silver, goldcuprid and acanthite. Electrum is the most important mineral, accounting for 71.56%. The average quality is 641.26% for gold and silver mineral.
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subjects Cracks
Electronics
Gold
gold mine
gold mineral
gold occurrence
gold-bearing mineral
Inclusions
Microscopy
Minerals
Mines
Silver
title Gold occurrence of Jiaojia gold mine in Shandong province
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