The FTIR spctra of biogenic vaterite minerals from the freshwater-cultured lacklustre pearls(FCLP) and eggshells of apple snail(EAS) were measured and analysed.

• 淡水无光珍珠及苹果蜗牛卵壳中六方碳钙石的FTIR光谱各特征吸收带的波数位置基本相同,但它们的FTIR谱图样式特别是一些吸收带的相对强度有明显的变化。