昆明东川区大石头山石灰岩矿地质特征及找矿标志  

THE GEOLOGICAL FEATURE AND PROSPECTING CRITERIA OF DASHITOUSHAN LIMESTONE DEPOSIT IN DONGCHUAN,KUNMING

作　　者：彭珍发 王丽美 李启忠 PENG Zhen-fa;WANG Li-mei;LI Qi-zhong(Dongchuan Development Arrangement Center of Land,Kunming,654100;Dongchuan Jinshui Mining Company(Ltd),Kunming,654100;Kunming Wenbiao Commercial Company(Ldt),Kunming 654100)

机构地区：[1]昆明市东川区土地开发整理中心,云南昆明654100 [2]昆明市东川金水矿业有限责任公司,云南昆明654100 [3]昆明市文彪工贸有限公司,云南昆明654100

出　　处：《云南地质》2022年第3期363-367,共5页Yunnan Geology

摘　　要：东川区大石头山石灰岩矿矿体呈中厚层状、块状产出,赋存于二叠系下统茅口组(P_(1)m)组灰白色至深灰色厚层状白云质灰岩中,矿物成分变化不大,矿体倾角较缓,产出层位较为稳定。矿体有益成分、有害成分、物理性能特征均符合建筑用石料Ⅰ类标准质量要求。该区石灰岩矿主要受地层、岩性控制。矿床成因属浅海相碳酸盐岩沉积矿床,具有较好的石灰岩矿找矿前景。The Dashitoushan limestone orebody is middle-thick bedded,massive in Lower P Maokou Formation(P_(1)m)grey-white,dark grey thick bedded dolomitic limestone,mineral composition without clear change,orebody dip gentle,horizon stable,composition and quality can meet the requirement of building material class 1.The limestone in this area is mainly controlled by strata,lithic character,belonging to the neritic facies carbonate sedimentary deposit,with good limestone prospecting potentiality.

关 键 词：石灰岩矿 沉积矿床 找矿标志 东川大石头山 云南昆明东川 

分 类 号：P619.22[天文地球—矿床学]