The shells are made of aragonite , although the primary deposits may consist of cameral calcite . The shells are formed of aragonite , although the primary deposits may consist of cameral calcite .
Cangkerang diperbuat daripada aragonit, walaupun deposit utama mungkin terdiri daripada kalung calcite. Cangkerang terbentuk daripada aragonit, walaupun deposit utama mungkin terdiri daripada kamera calcite.