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本区中粒钾质花岗岩出露于黑龙江省海林县长汀镇西南27公里的南天门,属华力西期产物.岩石主要由钾长石、石英和斜长石组成,其化学成分以酸度高,碱度大于4,微量元素相对含 Ba、Sr、Zr 较高,Cr、Ni、Co 较低为特征,表明中粒钾质花岗岩属偏碱性的超酸性岩石.矿石(岩石)类型从工业利用和地质特征两方面划分为工艺类型和自然类型.前者又可分为牡丹红、红斑花和灰斑花矿石;后者分为块状和斑点状矿石.矿石颜色美观,花纹均匀调合,结构致密,挖压强度为800—1300kg/cm~2,挖折强度为80—180kg/cm~2,吸水率不大于0.5—0.75%,块度与成荒率等均可达到石材工业指标要求.此外,矿区水文地质条件简单,无放射性元素辐射影响.综上所述,均为石材开采提供了良好条件.
The granitic potash granites in this area were exposed in the Nantianmen, 27 km southwest of Changting town, Hailin County, Heilongjiang Province and belonged to the Wahlixi Period.The rocks are mainly composed of potash feldspar, quartz and plagioclase, and their chemical composition High acidity, alkalinity greater than 4, trace elements relative to Ba, Sr, Zr higher, Cr, Ni, Co lower characteristics, indicating that the medium-potash granite is a more alkaline than the acid rock. Ore (rock) type From the industrial utilization and geological characteristics are divided into two types of process types and natural types.The former can be divided into peony red, red flower and gray spot flower ore; the latter is divided into massive and spot-like ore. Ore beautiful color, uniform pattern It has the advantages of compact structure, digging strength of 800-1300kg / cm ~ 2, dug strength of 80-180kg / cm ~ 2, water absorption of not more than 0.5-0.75% Index requirements.In addition, the mining area hydrogeological conditions are simple, no radiation effects of radioactive elements.In summary, are provided for the stone mining conditions.