The geological plant method is a method for prospecting based on the relationship between specific plant species and plant combinations and certain geological conditions (rock, wall rock alteration, structure, specific deposits, etc.). Since two-thirds of the earth's land is suitable for plant growth, the early geological plant method was only used for observation by the naked eye, so it has been applied to geological and hydrogeological surveys and prospecting work long ago. The literature can be traced back to 19 Mid-century and early 20th century, even earlier. It is known in modern times to use this approach in finding foreign cr, co, ni, cu, pb, zn, mo, au etc. metal minerals and diamonds and precious stones, and so some non-metallic mineral white spoon made some success, particularly It is widely used in the prospecting of metal minerals, and the effect is also remarkable. The use of plants, especially characteristic plants, for prospecting has received increasing attention. The plant prospecting method includes the geological plant method and the plant ash method, and there are many application examples in foreign countries. Although there have been one or two monographs on local botany in the former Soviet Union and Western Europe in the middle of the 20th century, there are still a handful of people engaged in research in this area. This method has been used in China since the 1950s. For example, Xie Xuejin and others (1952) used Haizhou Xiangxi ( copper grass) to find copper mines in the middle and lower reaches of the Yangtze River. Zhou Dezhong, Chen Daidan, etc. (1963) used large leaves. Buddleja find mercury mine in Guizhou and Guangxi, have received good white spoon effect. This article will discuss the author's recent tests carried out prospecting in the use of features in southwest Guizhou Lanmuchang thallium (mercury) deposits obtained plants and plant combinations white Spoon some preliminary results. 1 Geological profile of the mudwood plant (mercury) deposit The Baimuchang (mercury) deposit is located in the transition zone between the southwestern margin of the Yangtze River and the Youjiang orogenic belt, and the composite part of the east-west structure and the northeastward structure of the southern section of the Zhaojiaping anticline. The most important ore-bearing strata in the mining area are Longtan Formation (p2l) and Changxing Formation (p2c), followed by the first member of the Lower Triassic Yelang Formation (t2y1). The ore-bearing surrounding rocks are limestone, clayey sandstone and muddy ash. Rocks, sandy clay rocks, clayey shale , brittle and plastic rocks alternate into layers, forming a complex ore deposit with obvious multi-layer mineralization. The value of the big blonde è—“ density contour map of the 滥 汞 (mercury) deposit The most important structure of the mining area is the ne 40-60° nose-shaped anticline, which is 720 m long and 350 m wide, which controls the distribution range of the deposit. The ne-°°°-60° f1-f7 fault group has a dip angle of 65°-85°. It is known that both ore bodies and ore bodies are produced in the fracture-altering zone between f1-f7, and are affected by stratum lithology. Double control with structure, roughly distributed along the layer, sloping in the longitudinal direction to the southwest, slightly undulating, showing a layered, lenticular output. It is lenticular or saddle in the lateral direction. It is generally 60-240 m long, 40-80 m wide, 120 m wide, 2-5 m thick, and 17 m thick. The ore body is composed of several small ore bodies. The ore body is prolific in the inter-layer fracture zone, the deflection of the fault side, the fault bend and intersection, the slope of the fault zone and the rock slope are gradually changed. It is mostly strip-shaped, sac-like, beaded, etc., generally 2-10 m long and 2-4 m wide. There is a rich ore body in the upper middle part of the Changxing Formation between the viii-viii exploration line profile and fb. Output, according to mining data, the rich ore body is 10-17 m long and 4-6 m wide. There pyrite mineralized wall rock alteration, silicification and barite, kaolinite and so on. The distribution direction and distribution range of the surrounding rock alteration zone, mineralization zone and NE-trending fault zone (f1-f7) are generally consistent, and the stronger the tectonic and alteration effects, the stronger the mineralization, the mineralization center and the strong structure. - The center of the alteration zone is basically consistent. In the period from 1957 to 1960, the Zhangmuchang was proved to be a large-scale mercury deposit by the Southwest Guizhou team, and the average content of mercury ore was 0.011%, and the associated component reserves were calculated. After the author's work since 1986, the independent rich ore body was discovered, and its characteristics were called the Baimuchang type (mercury) deposit. In recent years, the authors point out that the ore-forming element tl is positively correlated with au and the ore-forming prediction of the gold content of the Yangjiawan antimony deposit. 2 The most important plant features and plant combinations in the mining area In addition to the artificially planted cedar forests in the northeast and southwest corners of the mining area, most of the wild plants in the area are most important for the development of large blondes, awns, valerian, drunkards, yellow flowers, stone pines and other herbs. The woody plants of South Candle, Dragonfly, etc., their morphological characteristics and distribution of mining areas are listed in the table below. The author's field observations for many years show that the plants listed in the table below form a characteristic plant combination with large blonde è—“, 箕 箕, å— candle, 榔榆, 蜈蚣è‰, 醉鱼è‰, 黄è‰è‰,石æ¾. The distribution is characterized by the strongest structure of the middle part of the mining area, which is the strongest in the mineralization center. The concentration of the combination in the northeast is slightly reduced, but it is still relatively developed, while in the southwest. The northeast section is more sparse. In addition to the fact that the above-mentioned plants always have a certain density, the other plants such as Mang, Nancan, and scorpion tend to be sparse, and it is difficult to obtain enough samples in the section. In order to further clarify the relationship between this plant combination and the tectonic-alteration-mineralization zone, the detailed description of the plants was carried out with the big blondes as an example, and the results were discussed. The most important plant characteristics and distribution of the 汞(mercury) deposit in the Baimuchang Serial number name Morphological characteristics Scientific name Distribution and symbiosis 1 Big blonde Needle-like leaves, herbaceous plants, often grow into green velvety grass. Polytrichum commune hedw. The whole area is distributed. The known alteration-mineralization zone and the northeast corner of the mining area are densely populated, and the edge of the mining area is gradually thinning. The most important symbiotic plants are Mang, Nancan, and 榔榆, followed by 蜈蚣è‰, 石æ¾, Yellow flowers and drunkards. 2 Mang The plexus produces a piece of fern for the white family. Dirannopteris dichotoma(thunb.) berh The most important distribution is in the known alteration-mineralization zone and the northeast corner of Figure 1. The most important symbiotic plants are big blonde, southern candle, and dragonfly, followed by stone pine, valerian, yellow grass and drunkard. 3 Valerian Chang Congsheng, Pteridaceae fern. Pteris vittata l. The most important distribution is in the known alteration-mineralization zone and in the northeast corner of Figure 1. It is symbiotic with Mang, South Candle, Big Blonde, Scorpion, Stone Pine, and Yellow Flower. 4 South candle Azalea shrubs. Lyo nia sp. Most importantly distributed in the alteration-mineralization zone in the central part of the mining area, the most important symbiotic plants are Mang, large blonde, and scorpion; followed by valerian, yellow grass and so on. 5 榔榆 50-200 cm high, eucalyptus woody, with oval leaves and serrated leaves Ulmus parvifolia jacq The most important distribution is in the alteration-mineralization zone in the central part of the mining area. It is symbiotic with Mang, South Candle, Big Blonde, and Valerian. 6 Buddle grass Herbs perennial are shrubby, poisonous stems and leaves, and can be drunk. Buddleia davidi franch The sporadic distribution in the mining area is symbiotic with the big blonde, the mang, the sedge, the south candle and the dragonfly. 7 Yellow flower Herbs, yellow flowers, commonly known as gluten. Gnaphalium affine ddon The whole area is distributed, and the alteration-mineralization zone is dense. 8 Shi Song The needle grows directly on the stem, and the stem is often curled and squatted on the ground, often growing in clusters. Lycopodium clavatum l It is distributed in the same way as awnings and valerian, and is closely symbiotic with it. Appraiser: Wang Chenglu, Department of Biology, Department of Biology, Guizhou Normal University Button Lithium-fluorocarbon Battery (Li-(CFx)n) models Lithium-fluorocarbon button battery products mainly include models of
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