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- W2356355079 abstract "According to the host rock,the gold ore bodies found in the Jiama copper polymetallic deposit contains four types,including those association with copper ore bodies in skarns,vein gold ore boides in the slate and hornsfels and in marble respectively and those ore bodies in porphyritic and porphyric dykes,such as produced in the skarn symbiosis with copper,molybdenum and silver,and the other three types respectively veining in the slate,hornsfels,and marble.Gold mineralization in skarn is stronger than that in other rocks.Its grade×thickness is over 1 m·g/t,and many gold-rich blocks are found in this type of gold mineralization;gold mine-ralization in the slate are mostly found outside the mine in crushed and fine pyrite-bearing silicified slate.Gold mineralization in the hornfels is featured by abundance in realgar and orpiment.Gold mineralization in marble is weak and only a few small lenticular ore body are found.Gold mineralization in porphoritic and porphyirc dykes are found in quartz veins.Gold has two occurrence modes: isomorphism and independent mineral.Gold of Independent mineral occurrence occurs as native gold and electrum in the gold-bearing copper minerals,quartz and pyrite.Gold of isomorphism occurrence mainly occurs in copper minerals such as bornite and chalcopyrite.Most gold occur in and between other minerals as intergranular or intragranular gold and some gold occur as accreted and fissure-filled gold.Take the geological feature of the gold deposits,the regularity of ore distribution and the occurrence mode of gold in the Jiama copper polymetallic deposits as its research base,the present paper suggests that the gold mineralization in the studied area probably related to the mantle derived C-H-O fluid,and has set up a preliminary metallogenic model for the Jiama copper polymetallic deposits.Besides,the paper also gives some suggestions under gandance of the model for prospecting gold in the deposits and in adjacent areas." @default.
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- W2356355079 date "2012-01-01" @default.
- W2356355079 modified "2023-09-28" @default.
- W2356355079 title "Analysis on Gold Metallization in Jiama Copper Polymetallic Deposit,Tibet" @default.
- W2356355079 hasPublicationYear "2012" @default.
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