摘要
本文通过对黄铁矿的化学成分、形态及微形貌、晶胞参数、热电系数等标型特征的研究结果表明,矿床中黄铁矿普遍含金,最高含金量达4200g/t,是国内外已知黄铁矿含金量最高的。矿石中黄铁矿常量元素S/Fe<2,显示亏硫的特点,微量元素Co/Ni=3.25,S/Se=1.98×10~4,表明为热液成因属性。δ^(34)S平均值为1.10‰,靠近标准值(δ^(34)S=0‰),反映出硫源以深源为主。晶胞参数α值小于理论值,与硫空位等因素有关。热电系数以正值为主,P型黄铁矿比率占84.3％,据此,推断矿体剥蚀程度较浅,深部找矿远景较大。
The Maotang gold deposit belongs to the porphyry type. Pyrite is a major auriferous mineral which contains Fe 41.98% and S 47.67%, less than theoretical values. It also contains Co/Ni=3.25 and S/Se=1.98×10~4. δ^(34)S values vary over a narrow range with an average value (?)=1.10‰, close to that of the meteorite sulfur (δ^(34)S=0‰). The cell parameter of pyrite α=0.5417nm. The main conduction type is P-type. The typomorphic characteristics of pyrites are key to the establishment of prospecting criteria for ore structure, morphology, chemical composition and thermoelectricity.
出处
《矿物学报》
CAS
CSCD
北大核心
1992年第4期344-352,共9页
Acta Mineralogica Sinica
关键词
黄铁矿
标型特征
找矿标志
金矿床
pyrite
typomorphic characteristics
prospecting criteria
granoporphyry
gold deposit
Henan
