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本文研究淡水褶纹冠蚌的珍珠和壳、三角帆蚌的珍珠和壳、背角无齿蚌壳;海水马氏珍珠贝的天然珍珠和壳、大珠母贝的天然珍珠和壳,及紫色裂江瑶壳等的晶体结构.发现所有珍珠的主要成分都是碳酸钙(CaCO_3),正交晶系,霰石结构,晶格常数都一致,淡水产的或海水产的都同样.贝壳的白色部分也都具同珍珠一样的成分结构和晶格常数、淡水产的和海水产的也都一样.淡水蚌壳的色泽表层也是碳酸钙的霰石结构,海水珍珠贝壳的色泽表层,紫色裂江瑶壳的色泽中、表层是碳酸钙,三方晶系、方解石结构.
In this paper, freshwater Pleurotus ostreatus pearl and shell, pearl and shell of Hyriopsis cumingii, claw shell of Anodonta saponaria, natural pearl and shell of sea mussel pearl shell, natural pearl and shell of pearl oyster, The crystal structure of the jiangsu yao shell, etc. The main components of all pearls are found to be calcium carbonate (CaCO_3), orthorhombic, aragonitic structure, the lattice constant are the same, freshwater aquatic products or marine products are the same.The white part of the shell Also have the same structure and lattice constant of pearl composition, freshwater aquaculture and marine products are the same.The color of freshwater mussel shell surface is also aragonite structure of calcium carbonate, seawater pearl shell surface color, purple crack Yangtze River shell The color, the surface is calcium carbonate, trigonal system, calcite structure.