Crystal chemical features of vein quartz from the Saralinsk deposit as an indicator of the productivity of gold mineralization (Kuznetsk Alatau, Russia)

被引：0
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作者：
Stenina, NG
Gubareva, DB
Gutakovskii, AK
Plyasova, LM
机构：
[1] Russian Acad Sci, Inst Geol, Siberian Div, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Inst Semicond Phys, Siberian Div, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk 630090, Russia
来源：
GEOLOGY OF ORE DEPOSITS | 2000年 / 42卷 / 01期
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D O I：
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中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Quartz samples from gold-bearing veins of the Saralinsk deposit were studied by means of optical and high-voltage high-resolution transparent electron microscopy (TEM), chemical analysis, infrared (IR) spectroscopy, thermogravimetry, and X-ray analysis. Samples were selected from two quartz modifications different by structural-textural and physical-chemical characteristics. The Qu I samples were of transparent dark-gray quartz and samples Qu TI were of opaque milk-white quartz associated with ore minerals and native gold. principal differences in the crystal chemical state of two quartz generations were shown. The sample Qu I contains more gold and silver, as well as structurally bonded water. Crystal lattice parameters of Qu I differ from those of chemically pure SiO2. Crystalline clusters of gold several tens of angstroms in size were fixed in annealed samples. Gold enters into quartz in the shape of a complex water-impurity defects [2SiO(3)-OH2-Au2FeO4] and forms a solid interstitial solution in SiO2.
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页码：47 / 56
页数：10
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