【摘要】：三稀元素是現(xiàn)代重要的資源,可以應(yīng)用到航空、航天、電子科技等高科技領(lǐng)域,因此研究稀土、分散和稀有元素礦床是十分有意義的。論文以白頭山銣礦為研究對(duì)象,通過(guò)對(duì)元素含量特征、元素帶出帶入規(guī)律以及地球化學(xué)異常規(guī)律等方面的研究,確定礦體直接指示元素為Rb,間接指示元素為Tl、Ga、Be、 Bi、Na2O、K2O。同時(shí),對(duì)礦體、蝕變帶和圍巖中的礦物成分進(jìn)行研究,確定了成礦元素Rb的載體礦物為鉀長(zhǎng)石和白云母,礦石中的特征礦物組合為鉀長(zhǎng)石、白云母、石英、斜長(zhǎng)石、少量黑云母和少量石榴子石。蝕變帶中的特征礦物組合為黑云母、角閃石、斜長(zhǎng)石、石英和鉀長(zhǎng)石。圍巖中的特征礦物組合為斜長(zhǎng)石、黑云母、石英、角閃石和鉀長(zhǎng)石。在此基礎(chǔ)上,研究了白頭山銣礦的表生異常特征,通過(guò)1：1萬(wàn)土壤測(cè)量結(jié)果和1：5萬(wàn)土壤測(cè)量結(jié)果,得出在表生環(huán)境中白頭山銣礦的特征元素組合。在1：1萬(wàn)的土壤測(cè)量研究中,確定了大比例尺表生環(huán)境中對(duì)礦床具有指示意義的元素組合為Rb、T1、Be、Al2O3,、Li、Ga、F, La、在1：5萬(wàn)的土壤測(cè)量研究中,確定了中小比例尺表生環(huán)境中對(duì)礦床具有指示意義的元素組合為Rb、TK、K2O、Be、Ga、Bi。可以看出,表生環(huán)境下形成的特征元素組合對(duì)原生異常研究所得到的元素組合具有較好的繼承性,從而得到白頭山銣礦床的勘察地球化學(xué)指標(biāo),即白頭山銣礦床的特征元素組合為Rb、Tl、Ga、Be、 Bi、 K2O,并提出白頭山銣礦異常結(jié)構(gòu)模式,為確定北山地區(qū)尋找以銣為主稀有金屬礦床提供了地球化學(xué)找礦標(biāo)志也為化探方法技術(shù)提供了基礎(chǔ)依據(jù)。
[Abstract]:Three dilute elements are important resources in modern times, which can be applied to the fields of aviation, aerospace, electronic science and technology, etc. Therefore, it is of great significance to study rare earth, dispersed and rare element deposits. This paper takes Baitoushan rubidium ore as the research object, through the study of the element content characteristics, the law of the bringing out of elements and the regularity of geochemical anomaly, it is determined that the direct indicator element of orebody is Rb, indirect indicator element is Tl,Ga,Be, Bi,Na2O,K2O.. At the same time, the mineral composition in orebody, alteration zone and surrounding rock is studied. It is determined that the carrier minerals of Rb are potash feldspar and Muscovite, and the characteristic mineral assemblage of ore is potassium feldspar, Muscovite, quartz, plagioclase. A small amount of biotite and a small amount of pomegranate. The typical mineral assemblages in the altered zone are biotite, hornblende, plagioclase, quartz and potassium feldspar. The characteristic mineral assemblages in surrounding rock are plagioclase biotite quartz hornblende and potassium feldspar. On the basis of this, the supergene anomaly characteristics of Baitoushan rubidium ore are studied. The characteristic element assemblages of Baitoushan rubidium ore in the supergene environment are obtained by the results of 1: 10 000 soil measurements and 1: 50 000 soil measurements. In the soil survey study of 1: 10, 000, it was determined that the element assemblage of large scale epigenetic environment that is indicative to the deposit is Rb,T1,Be,Al2O3,,Li,Ga,F, La, in the soil survey of 1: 50, 000. It is determined that the element assemblage of small and medium scale epigenetic environment which has indicative significance to the deposit is Rb,TK,K2O,Be,Ga,Bi.. It can be seen that the characteristic element assemblage formed in the supergene environment has a good inheritance to the element assemblage obtained from the primary anomaly study, and the geochemical index of the Baitoushan rubidium deposit is obtained. That is, the characteristic element assemblage of Baitoushan rubidium deposit is Rb,Tl,Ga,Be, Bi, K _ 2O, and the anomalous structural model of Baitoushan rubidium deposit is proposed. This paper provides geochemical prospecting markers for the determination of rubidium-based rare metal deposits in Beishan area and provides a basis for geochemical exploration methods and techniques.
【學(xué)位授予單位】：中國(guó)地質(zhì)科學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.77

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