【引用本文】 葛江洪, 王英凯, 张旭, 等. 黑龙江省特殊景观区化探土壤样品中钼的相态分析方法及应用[J]. 岩矿测试, 2019, 38(2): 222-227. doi: 10.15898/j.cnki.11-2131/td.201611100206
GE Jiang-hong, WANG Ying-kai, ZHANG Xu, et al. Phase State Analysis Method and Application of Molybdenum in Soil Samples of Special Landscape Exploration in Heilongjiang Province[J]. Rock and Mineral Analysis, 2019, 38(2): 222-227. doi: 10.15898/j.cnki.11-2131/td.201611100206

黑龙江省特殊景观区化探土壤样品中钼的相态分析方法及应用

黑龙江省地质矿产测试应用研究所, 黑龙江 哈尔滨 150036

收稿日期: 2016-11-11  修回日期: 2018-07-27  接受日期: 2018-12-10

基金项目: 黑龙江省国土资源厅科研项目“黑龙江省化探土壤中重点金属元素相态分析方法研究”(SDK2008-026)

作者简介: 葛江洪, 硕士, 实验测试高级工程师, 主要从事地质样品分析测试工作。E-mail:gjh777@163.com

Phase State Analysis Method and Application of Molybdenum in Soil Samples of Special Landscape Exploration in Heilongjiang Province

Institute of Geological and Mineral Testing in Heilongjiang Province, Haerbin 150036, China

Received Date: 2016-11-11
Revised Date: 2018-07-27
Accepted Date: 2018-12-10

摘要:多年来通过化探扫面的全量异常分析结果发现的矿床并不多,在表生条件下,不同的元素随着区域景观条件的不同,其迁移、沉积规律以及元素原始的赋存状态也不同,化探分析给出元素的全量分析结果并不能完全准确地反映成矿情况,因而元素的存在形式和存在状态对于判断是否是成矿异常至关重要。本文建立了黑龙江地质景观特点的化探土壤样品中钼的相态分析方法,将钼的相态分为五相:水提取相、弱有机结合相、氧化物结合相、铁结合相、残渣相。采用ICP-MS测定钼元素各相态的检出限分别为:水提取相0.0011μg/g,弱有机结合相0.020μg/g,氧化物结合相0.100μg/g,铁结合相0.100μg/g,残渣相0.100μg/g。利用该方法分析了黑龙江某地有钼全量异常的样品,结果表明钼主要以铁结合相存在,属脉型产状,符合钼矿床的类型之一,研究结果提高了利用化探异常找矿的准确性。

关键词: 化探土壤, , 相态分析, 电感耦合等离子体质谱法, 成矿异常

要点

(1) 通过化探分析元素全量异常发现矿的几率不高,研究元素的物相和形态有助于判断成矿异常的可能性。

(2) 建立了黑龙江省化探异常元素钼的相态分析方法,应用ICP-MS获得较准确的各个相态组成。

(3) 利用黑龙江省某地区的化探样品进行试验,钼的相态分析结果与钼矿床的成矿类型相吻合。

Phase State Analysis Method and Application of Molybdenum in Soil Samples of Special Landscape Exploration in Heilongjiang Province

ABSTRACT

BACKGROUND:

Over the years, the total anomaly analysis results of geochemical exploration have found that there are not many deposits. Under the conditions of epigenetic conditions, different elements have different migration and deposition laws and primitive occurrence states. The geochemical analysis gives the full analysis of the elements cannot accurately reflect the mineralization anomalies situation. Therefore, the existence form and existence state of the elements are crucial for judging whether it is a metallogenic anomaly.

OBJECTIVES:

This paper establishes the phase analysis method of molybdenum in geochemical soil samples from the characteristics of Heilongjiang geological landscape.

METHODS:

The phase states of molybdenum are divided into five phases:water extraction phase, weak organic binding phase, oxide binding phase, Fe-binding phase, and residue phase. The detection limits of molybdenum phases determined by ICP-MS are:water extraction phase 0.0011μg/g, weak organic binding phase 0.020μg/g, oxide binding phase 0.100μg/g, Fe-binding phase 0.100μg/g, the residue phase is 0.100μg/g.

RESULTS:

The method was used to analyze the samples with molybdenum anomaly in a certain part of Heilongjiang Province. The results showed that molybdenum was mainly composed of Fe-binding phase, which belonged to the vein type and conformed to one of the types of molybdenum deposits.

CONCLUSIONS:

The method improves the accuracy of prospecting using geochemical anomalies.

KEY WORDS: chemical exploration of the soil, molybdenum, phase analysis, Inductively Coupled Plasma-Mass Spectrometry, mineralization anomalies

HIGHLIGHTS

(1) The probability of finding total element anomaly is not very high. It is helpful to study the physical phase and morphology of element to determine the possibility of total element anomaly.

(2) The phase analysis method of the molybdenum element of geochemical anomaly in Heilongjiang Province was established, and the analytical results of each phase were obtained by ICP-MS.

(3) The test was carried out using a chemical sample from a certain area of Heilongjiang Province. The results of phase state analysis of molybdenum agree with the metallogenic types of molybdenum deposits.

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黑龙江省特殊景观区化探土壤样品中钼的相态分析方法及应用

葛江洪, 王英凯, 张旭, 葛艳梅