PMC4070326_01
Four of stones broken by hand.
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fig1
Her stones were white in color and they were easily dispersible with a diameter of 3-5 mm approximately (Figure 1).
The analysis of stones (Fourier transform infrared spectroscopy).
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fig2
She had collected her stones and Fourier transform infrared spectroscopy (FTIR) was performed to the stones for the analysis (Figure 2).