. Annual report. New York State Museum; Science; Science. 198 NEW YORK STATE MUSEUM Fluorite Rossie} St Lazvrence co. Among the specimens in the New York State Museum collection is one worthy of notice, collected by the late Prof. Ebenezer Emmons, from Rossie, St Lawrence co. This specimen which measures 9 by 5 centimeters consists of a mass of rhombohedral calcite on which are implanted several compound crystals of fluorite of unusual habit. These latter are built-up aggregates, roughly octahedral in shape/ composed of minute individuals of hexoctahedral habit grouped in parallel position. Th
. Annual report. New York State Museum; Science; Science. 198 NEW YORK STATE MUSEUM Fluorite Rossie} St Lazvrence co. Among the specimens in the New York State Museum collection is one worthy of notice, collected by the late Prof. Ebenezer Emmons, from Rossie, St Lawrence co. This specimen which measures 9 by 5 centimeters consists of a mass of rhombohedral calcite on which are implanted several compound crystals of fluorite of unusual habit. These latter are built-up aggregates, roughly octahedral in shape/ composed of minute individuals of hexoctahedral habit grouped in parallel position. The octahedral angles of the aggregates are in every case terminated by well developed superposed hexoctahe- dral crystals as shown in figure 2. The compound crystals are. Fig. 2 Fluorite, Rossie transparent, light green in color and average 15 millimeters in diameter. They are evidently of the same generation as the calcite in which they occur and are associated with chalcopyrite in well developed crystals. Measurements on three isolated crystals yielded the following forms: a (100), 0(111), v(73i) and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum. Albany : University of the State of New York
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