| 浅论泸沽铁矿的火山成因 |
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| 引用本文： | 何大伦. 浅论泸沽铁矿的火山成因[J]. 成都理工大学学报(自然科学版), 1987, 0(1) |
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| 作者姓名： | 何大伦 |
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| 摘 要： | 泸沽铁矿是一个富铁矿床。它的成因,长期存在争论。本文从矿床地质特征、成矿物化环境、物质来源、矿化分布规律诸方面,论证了该矿床属于与海底火山热液有关的气液交代充填型磁铁矿床。矿化物质来源与粗玄岩岩浆喷发有关。矿床位于主火山口与侧火山口之间的过渡地带,矿体受水下火山爆破角砾筒控制。为火山喷发早期流纹岩向粗玄岩过渡阶段的间歇期成矿。文中阐述了成矿温度、压力、pH、Eh及变化规律,并提出了成矿模式和找矿远景地段。
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| 关 键 词： | 泸沽 磁铁矿床 矿化 矿床成因 温度-压力条件 pH值 Eh值 物理化学环境 岩浆 |
PRELIMINARY STUDY OF THE ORIGIN OF THE LUGU FERRIC DEPOSIT, SICHUAN |
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| He Dalun. PRELIMINARY STUDY OF THE ORIGIN OF THE LUGU FERRIC DEPOSIT, SICHUAN[J]. Journal of Chengdu University of Technology: Sci & Technol Ed, 1987, 0(1) |
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| Authors: | He Dalun |
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| Abstract: | The Lugu ferric deposit is a very rich one. Several hypotheses, like origin from metamorphosed sediments, contact metasomatism, hydrothermal solution infilling, and volcanic sediments have been proposed. Using geological characteristics, physico-chemical environments for ore-genesis and statistical aspects of the deposit, the author argues that the deposit is derived from magnetite when originated from replacements related to submarine eruption. The temperature, pressure, pH, Eh for ore-genesis and their variation are presented and an ore-formation model and prospective zones are suggested. |
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| Keywords: | Lugu magnetite deposit mineralization metallogeny temperature-pressure Eh pH physical chemistry magmas |
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