| 新疆某地自然硫矿床地质特征简介 |
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| 引用本文：.1984.A Brief Description Of Geologic Characteristics Of A Native Sulfur Deposit In Xinjiang[J].Mineral Deposits,3(4):80~84 |
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| A Brief Description Of Geologic Characteristics Of A Native Sulfur Deposit In Xinjiang |
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| Abstract:The middle-sized native sulfur deposit in question lies at the northern foot of Kunlun Mountains and also at the southwest edge of Tarim Basin. Native sulfur orebodies of commercial value might be grouped into two types: one is stratabound bioepigenetic type and the other is oxidation type. The former, being confined invariably to gypsum beds, assumes such shapes as lenses, irregular wedges and thin layers, and is complicated in ore texture and structure, simple in mineral composition, low in grade, small in variation coefficient of grade and relatively large in size; the latter, instead of occurring in some certain strata, follows pores and cracks in various rocks in the form of cakes and convex lenses with gentle dips, and is characterized by relatively complicated mineral constituents, high grade, large variation coefficient of grade, extremely small size and close association of sulfur and gypsum. The distribution of sulfur mineralization coincides apparently with that of oil-gas occurrences: in gypsum rock-developed strata on both sides of fracture zone with oil-gas occurrences, there occur native sulfur orebodies with considerable commercial value, which are obviously controlled by gypsum rocks, oil-gas occurrences and fractures. Native sulfur in the mining area seems likely to be the product of bioepigenic reaction between hydrocarbon- and bacteria- bearing oil field water and gypsum right at the fracture-developed gypsum rock portion. The rapid progress in prospecting and exploration for petroleum and the frequent discovery of oil fields of various sizes open up vast vistas in search for bioepigenic native sulfur deposits associated with gypsum rocks and oil-gas in the vicinity of the present oil fields. Due attention should be paid to the detection and investigation of this type of deposits to find more native sulfur ores of greater economic value. |
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