Sedimentary metamorphic iron-graphite ore exploration method

A graphite ore-forming technology, applied in the field of sedimentary-metamorphic iron-graphite ore exploration, can solve problems such as inability to achieve ore-forming prediction, complex ore-prospecting characteristics, narrowing of target area, etc. The effect of improving accuracy

CN108802851AInactive Publication Date: 2018-11-13青海省第三地质勘查院
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-11-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention aims to disclose a sedimentary metamorphic iron-graphite ore exploration method. The sedimentary metamorphic iron-graphite ore exploration method includes the following steps: A, determining a metallogenic system; B, dividing a metallogenic prospect; C, delineating a metallogenic target; D, shrinking the target and delineating a metallogenic favorable section; E, positioning the spatial position of a magnetic body and a polarized body; and F, drilling to verify and determine an ore deposit and an ore body. Under guidance of the metallogenic theory and an ore-seeking model, the iron-graphite ore exploration technique combination method can effectively avoid the limitation that the iron-graphite ore cannot utilize the geochemical anomaly to select the target, can utilize geological and geophysical exploration data to divide the metallogenic prospect to quickly know about the properties of magnetic anomaly and reduce multiplicity of magnetic anomaly so as to achieve the aimof searching iron and graphite ores, can utilize the geophysical exploration method to realize spatial positioning of buried ores, thus reducing the prospecting period and improving the ore-seeking success rate, has the advantages of short prospecting period, high efficiency and low prospecting cost, and is suitable for seeking magnetic iron ores and graphite ores.
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Description

technical field

[0001] The invention relates to a solid mineral prospecting method, in particular to a sedimentary metamorphic iron-graphite ore prospecting method. Background technique

[0002] The mineralization of sedimentary-metamorphic iron-graphite deposits is related to the Mesoproterozoic sedimentary strata. The hydrothermal exhalative deposition and metamorphism of the Mesoproterozoic active continental margin provided the basic conditions for the formation of sedimentary-metamorphic minerals. Iron ore is often produced after strong basic volcanic magmatic activity on the active continental margin. Sedimentary mineralization is an important process of iron ore metallization, and metamorphic process plays an important role in the further enrichment of iron ore, while graphite ore is mainly Formed during metamorphism; the output of iron and graphite ore bodies is controlled by strata and lithology, and the two are accompanying output. Iron ore is characterized by str...

Examples

Embodiment

[0043] Utilizing the exploration method technology combination of "mineralization system + division of ore-forming prospect areas + (geological mapping + high-precision magnetic survey, IP survey) + inversion simulation + drilling verification" established for sedimentary metamorphic iron-graphite deposits, Taking the iron and graphite mines in the Naxi Gol area as an example, the prospecting effect of this combination of methods is briefly described as follows:

[0044] 1. Determine the ore-controlling elements of sedimentary metamorphic iron-graphite deposits from the aspect of metallogenic system

[0045] The Naxi Gol iron-graphite deposit is located in the Qimantage metallogenic belt, formed in the environment of the active continental margin of the Mesoproterozoic orogenic belt, and the ore-forming system is the sedimentary metamorphic iron-graphite mineralization system of the active continental margin of the Mesoproterozoic.

[0046] The output of the Naxi Gol iron-grap...