Calcium carbonate occurs in the allomorphs calcite and aragonite .
碳酸鈣存在于同質異晶的方解石和文石中。
Effect of magnetic field on the growth rate of aragonite .
磁場對文石成長速率之影響。
Changle city , fujian province aragonite frozen aquatic products factory .
福建省長樂市文石水產品冷凍廠。
They have also discovered that the shells of many organisms in the area are short of aragonite , a form of calcium carbonate that gives them strength , but whose formation acid discourages .