“泗滨砭石”地质特征及成因分析

泗水县南部发现了历史上记载的古代名石"泗滨砭石",在泗水县迅速兴起了砭石研究、开发和加工热。该区通过地质测量、放射性测量、地表工程和各类样品的分析测试,大致对泗水县南部地质特征和砭石特征进行了调查了解。"泗滨砭石"产于泗水县南部的低山丘陵区,矿体赋存于寒武纪馒头组石店段地层中,呈层状产出,地表分布3个矿带,10个矿体,矿层产状同围岩产状一致,走向NW,倾向NE,倾角8°~27°,矿层厚度0.5~1.8m,厚度稳定。向NE矿层隐伏于地下,埋深逐渐加大。岩性为紫红色、黄褐色纹层状微晶灰岩,主要矿物成分为方解石,另有少量的泥质、氧化铁质、有机质、石英等。矿床成因为沉积变质型。该文旨在通过对泗水县砭石的成矿地质特征和矿体特征进行分析研究,探讨其控矿作用,总结其成矿规律,以期对泗水县南部砭石的找矿有所启示。

Geological Characteristics and Origin of "Sibin Bianshi" in Shandong Province

In the southern part of Sishui county, ancient famous stone named "Sibin Bianshi" was discovered in the south of Sishui county, and the study, development and processing of this kind of stone have been quickly carried out in this area. Through geological survey, radioactivity survey, surface engineering and analysis and testing of various kinds of samples, geological characteristics in the south of Sishui county and the characteristics of the stone have been investigated. "Sibin Bianshi" occurred in low mountain and hilly area in the south of Sishui county. Ore bodies occur in Shidian section of Cambrian Mantou group with stratiform output. Three ore belts and 10 ore bodies distributed on the surface. The occurrence of ores are consistent with the occurrence of surrounding rocks. The trend is NW, the inclination is 8 ~ 27 °. The thickness is 0.5~1.8m, and the thickness is stable. The strata with the trend of NE are buried in deep underground and gradually increased. Lithology is purple red and yellow brown lamellar microcrystalline limestone. Main mineral composition is calcite, a small amount of clay, iron oxide, organic matter, quartz and so on. The deposit is metamorphic type. In this paper, through geological characteristics and ore body analysis, its orecontrolling role has been studied, and metallogenic regularities have been summarized in order to provide some references for prospecting "Bianshi" in south of Sishui county.