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(一) 矿体形态 206矿区矽卡岩白鎢矿矿床主要分布在甲区和乙区兩个地段,如图1。矿体呈层狀、条帶状、扁豆狀产出。所谓矿体不仅有矽卡岩而且也包括了矽卡岩上、下圑岩(石灰岩、角頁岩和板岩)的工业矿化部分。矿体产状与矽卡岩体基本一致,矽卡岩化則又与岩层产狀一致。矿体走向在甲区大致为北东30～35°,傾向南东,倾角由30°至35°;在乙区略偏东而为北东60°左右。倾向亦为南东,傾角由35°～40°。本区矿体在产狀上較为特殊的是:这种接触交代式的矿床并不产于与侵入岩体的接触帶上,而却产于石灰岩与砂岩的接触帶中(这是主要的),或者产于
(Ⅰ) Orebody shape 206 The ore skarn scheelite deposit is mainly distributed in two areas, namely, Area A and Area B, as shown in Figure 1. Ore body is stratified, strip, lenticular output. The so-called ore bodies include not only skarn but also the industrial mineralized parts of skarn and dolomite (limestone, angular shale and slate). Ore body shape and skarn body is basically the same, skarnization and rock formation consistent. The trend of orebodies is about 30-35 ° North East in Zone A, easterly to the east and dip from 30 ° to 35 °; in the area B slightly east and about 60 ° North East. The trend is also south-east, dip angle from 35 ° to 40 °. The orebody of this area is rather special in its occurrence: this contact metasomatic deposit is not produced on the contact zone with intruded rock mass but is produced in the contact zone between limestone and sandstone (which is the major ), Or produced