松花石又名松花玉,因产于吉林松花江流域而得名。它是我国著名传统砚石之一,在历史上享有盛誉。用此石制砚称为松花砚。松花石为微晶质灰岩,产于震旦系南芬组中部的微晶石灰岩中,其形成年代距今约有13亿年左右。岩中含方解石95%,细粒石英3～8%,还有粘土和少量的磷、钡、硼等元素。颜色有翠绿、绛紫、驼青、紫绿相间四 Songhua stone, also known as Songhua Yu, due to produce Songhua River in Jilin named. It is one of the famous traditional inkstone in our country and enjoys a good reputation in history. This stone inkstone is called Songhua Yan. Songhua stone is a microcrystalline limestone, which is produced in the microcrystalline limestone in the central part of the Sinian Nanfen Formation. Its formation age is about 1.3 billion years ago. Rock contains 95% of calcite, fine quartz 3 ~ 8%, as well as clay and a small amount of phosphorus, barium, boron and other elements. Colors are green, purple, camel blue, purple and white four