红丝石与红丝砚,在我国文化历史上,久负盛名。西晋张华《博物志》载:“天下名砚四十有一,青州红丝石第一”。唐代名书法家颜真卿、柳公权,宋朝书法家、文学家欧阳修、陆游等,都有过品评或称颂。红丝石的主要产地在山东省临朐县的老崖崮。因这里为古青州所辖,故红丝石砚古称“青州红丝砚”。临朐红丝石,石层极厚,藏量丰富,石质优佳,色泽华褥而不浮艳,与墨相亲,发墨如泛油,纹理瑰丽多姿,可谓稀世珍宝,为它石之不可比拟。据地质部门化验分析,红丝石系钙质细砂岩,主要成分为二氧化硅、铁质和碳酸盐矿物,颗粒大小及分布都很均匀,因而质坚而润。由于岩中间杂有其他色素成分,所以色彩各异,纹理天成,千姿百态。常见有红地黄丝、紫红地揭丝、红褐地紫丝、猪肝紫地黑丝、纯猪肝紫色等10余种。纹理分类名目繁多,有直纹宽红丝、直纹细红丝、九曲云朵双面纹 Red silk stone and red silk inkstone, in our country’s cultural history, prestigious. Zhang Hua in the Western Jin Dynasty “Museum Records” contains: “There are forty in the world famous inkstone, Qingzhou red first stone”. Yan Zhenqing famous calligrapher in the Tang Dynasty, Liu Gongquan, calligraphers of the Song Dynasty, writers Ouyang Xiu, Lu You, have been rated or praised. The main origin of red silk stone in Linyi County, Shandong Province, the old Cliff. Because here is under the jurisdiction of ancient Qingzhou, so ancient red silk stone inkstone “red silk inkstone of Qingzhou ”. Provisional red silk stone, very thick rock layer, rich reserves, excellent stone quality, color, but not floats Fu Yan, and ink dear, hair ink such as oil, magnificent texture, can be described as rare treasures, for its stone Incomparable. According to the geology laboratory analysis, the red silkstone calcareous fine sandstone is mainly composed of silica, iron and carbonate minerals. The grain size and distribution are uniform, so the quality is strong and moist. As the middle of the rock miscellaneous other pigment composition, so different colors, texture Tiancheng, mix. Common red earth yellow silk, purple red, red and brown purple, pig liver purple black, pure pig liver purple more than 10 species. A wide range of texture classification, there are straight lines wide red silk, fine red filament ruffled, nine clouds double-sided pattern