Temperature determinations made by heating liquid inclusions in a fluorite crystal from the Greenleaf no. 1 prospect, Fluorite Ridge, Luna County, New Mexico, indicate that the crystal started its growth at about 202 degrees C. and continued growth until the temperature had fallen below 150 degrees C. The external habit of the fluorite crystal is cubic, but the shape of the temperature contours indicate that the crystal grew with octahedral habit throughout most of its period of crystallization.

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