Abstract
DIFFERENTIAL thermal analysis (d.t.a.) of quartz normally reveals an endothermic peak at 573° C, corresponding to the inversion from low quartz to high quartz. If the quartz is subjected to grinding it is observed that the peak size decreases, both in height and area; this effect is usually attributed to conversion during grinding of quartz to some amorphous or vitreous form of silica, as has been described by Dempster and Ritchie1.
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References
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MOORE, G., ROSE, H. The Structure of Powdered Quartz. Nature 242, 187–190 (1973). https://doi.org/10.1038/242187a0
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DOI: https://doi.org/10.1038/242187a0
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