结果发现，淡水珍珠物相组成与海水珍珠不同；并首次在淡水无光珠中发现了球文石。

The results show that the mineral compositions of fresh water pearl are different from that of sea water pearl, and vaterite has been discovered.

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无光纸：有着像鸡蛋壳的暗淡色调的纸。在摄影方面，指有着幼细纹理的相纸，亦称珠面相纸，有别于光面相纸。

Matt finished paper: paper with a dull egg-shell surface. Also, in photography, a textured, finely grained surface on a photograph as oppose to glossy.

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