The main basic characteristics of the Songhua Stone, formational environment, distribution, developing state are introduced in this paper.
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松花石形成于独特的地质环境中,有着悠久的历史文化,曾做为“御砚”和“朱批”的专用砚。
The Songhua Stone is formed in a special geologic setting, which has a long history and civilization. It used to a special inkstone as "imperial inkstone" and "written instructions".