摘要
我国普通建设用砂矿产资源十分丰富。近年来,随着社会建设规模的持续扩大上升等因素,导致建筑材料目前远不能满足经济发展的需求。因此加强建设用砂矿产资源勘查和开发利用十分必要。河南省唐河县花冲建筑用机制砂矿床位于秦岭复杂构造带东段,桐柏—大别隆起西部,南阳断陷盆地东缘。交通条件优越,区位优势明显。通过对其矿床地质特征与成因研究,得出如下结论,矿床赋存于中生代白垩世二长花岗岩体中,由燕山期酸性岩浆侵入冷凝形成的高温熔融体冷凝结晶矿床。区内岩浆的侵入作用为机制砂的形成提供了至关重要的物质基础,后期的构造隆起作用使得本区地壳上升,局部出露地表,呈现剥蚀与上升二者动态平衡的状态。为机制砂的开发利用提供了得天独厚的条件;矿石自然类型为细—中粗粒二长花岗岩,工业类型为建筑用机制砂,矿石坚固性为Ⅱ类,压碎指标为Ⅲ类,综合评定矿区内矿石品级为Ⅲ类,属中砂。矿区内资源量可靠;区域中生代中酸性侵入岩广泛发育,具有良好的建筑用花岗岩找矿远景。对于该矿床的研究,可进一步推动该区建筑材料工业的发展,缓解其周边区域对建筑材料的需求,促进地方经济。
China is rich in general construction sand mineral resources.In recent years,with the continuous expansion and rise of social construction scale and other factors,building materials are far from meeting the needs of economic development.Therefore,it is necessary to strengthen the exploration,development and utilization of sand mineral resources for construction.The Huachong construction manufactured sand deposit in Tanghe County,Henan Province,is located in the east of Qinling complex structural belt,the west of Tongbai Dabie uplift and the east edge of Nanyang fault basin with superior traffic conditions and obvious location advantages.Based on the study of the geological characteristics and genesis of the deposit,the following conclusions are drawn:the deposit occurs in the Mesozoic Cretaceous monzogranite body,which is a high-temperature melt condensate deposit formed by the intrusion and condensation of Yanshanian acid magma.The intrusion of magma in the area provides a vital material basis for the formation of mechanism sand.The later tectonic uplift makes the crust rise and partially exposed to the surface,showing a dynamic balance between denudation and rise.It provides unique conditions for the development and utilization of manufactured sand.The natural type of ore is fine medium coarse grained monzogranite,the industrial type is manufactured sand for construction,the ore firmness is classⅡ,the crushing index is classⅢ,and the ore grade in the mining area is classⅢaccording to comprehensive evaluation,belonging to medium sand.The resources in the mining area are reliable.Mesozoic intermediate acid intrusive rocks are widely developed in this area,which has a good prospecting prospect for building granite.The research on the deposit can further promote the development of building material industry in the area,alleviate the demand for building materials in the surrounding areas and promote the local economy.
作者
彭明章
杨小三
Peng Mingzhang;Yang Xiaosan(Shandong Geological Exploration Institute of China Chemical Geology and Mine Bureau,Jinan 250013,China)
出处
《能源与环保》
2023年第3期149-154,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
河南省省级地质勘查基金项目(GZ-2021-019)。
关键词
建筑用机制砂
中白垩世花岗岩
构造隆起
剥蚀作用
成因研究
manufactured sand for construction
middle cretaceous granite
tectonic uplift
denudation
genesis research
