Fairchildite (K 2 CO 3 .CaCO 3 ) and buetschliite (3K 2 CO 3 .6H 2 O) have been identified from the trunk of a burned hickory tree near Deseronto, Ontario. Material was collected from the top of the burned stump and from the ground beneath the fallen trunk. Spectrographic analyses indicate that Mg and Ca are the major constituents, with minor amounts of K and P. Table gives X-ray powder patterns for the two minerals. This constitutes the first recorded occurrence of these minerals in Canada.

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