白馬寨鎳礦位于金平縣城西北，發(fā)現(xiàn)于1957年，1960年正式轉(zhuǎn)入勘探，1965年提交了儲(chǔ)量報(bào)告。該礦床是個(gè)中型鎳礦，保有鎳儲(chǔ)量5.32萬t，鎳品位1.23%。含礦巖體侵入于下奧陶統(tǒng)第三四組地層中。巖體呈向北西傾伏的扁柱體，傾伏延伸大于600m，寬190m，厚47m。巖體由輝長(zhǎng)巖、輝石巖、橄欖巖組成，并依次由外向內(nèi)呈環(huán)帶狀分布。不同巖相之間呈突變接觸。礦床為一復(fù)合礦體，呈扁柱狀產(chǎn)于含礦巖體的中部(下圖)，其體積約占整個(gè)巖體的1/3。形態(tài)、產(chǎn)狀與巖體一致。礦體由稀疏浸染狀、海綿晶鐵狀和致密塊狀三種礦石組成。白馬寨鎳礦礦石的特點(diǎn)是含銀、銦高，尤其在塊狀礦石內(nèi)，并形成銀鎳黃鐵礦和銀金礦。礦床地質(zhì)特征表明，含礦巖漿，乃至礦漿沿同一構(gòu)造裂隙多次上侵形成的，貫入作用屬脈沖式活動(dòng)，故稱其為巖漿深部熔離-脈沖式貫入礦床。
Located in the northwest of the city of Jinping Baimazhai Nickel ore, discovered in 1957, 1960 officially transferred to the exploration, 1965 submitted reserves report. The deposit is a medium sized nickel, nickel reserves have 53 thousand and 200 t, nickel grade 1.23%. Ore bearing intrusion in the lower Ordovician formation in the three or four groups. The rock mass is a flat column in the west to the north, and the bend is larger than 600m, and the width is 190m, and the thickness is 47m. Rock composed of gabbro, pyroxenite and peridotite, which in turn is zonal distribution from outside to inside. Mutation contact between different lithofacies. The ore deposit is a compound ore body, which is in the middle of the ore bearing rock (below), which is about 1/3 of the whole body. Form, production and consistent. The ore body is composed of three kinds of ore, which are sparse disseminated, spongy crystal and dense block. The characteristics of Baimazhai Nickel minerals containing silver and indium is high, especially in the massive ores, and the formation of silver nickel pyrite and silver gold deposit. Show that the geological characteristics, ore magma and ore pulp, along the same tectonic fissures repeatedly invaded formation, penetration effect is pulse, so it was the deep magmatic liquation pulsed penetration deposit.
|
.jpg)
