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Two types of carbide dump formations are found [in Cornwell Cave]. The ice cream cone type is developed up to 3/8 inch tall. In 1973 Ray and Mary Ellen Garton discovered what has been described as a new type of carbide derived speleothem: the carbide dump stalactite. Samples of the speleothem have been studied by x-ray defraction, showing the composition to be calcite and quartz.
Phil Winkler wrote:Actually, it is made from lime and coal.
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