. Bulletin - New York State Museum. Science. Fig. 114 Fig. ; The verticiil ;ixis is an axis of trigonal symmetry. The minerals ilmenite, dolomite, phenacite, dioptase and willemite occur in forms of this group. Fig. 115 shows a crystal of 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; New York State Museum. Albany : New York State Education Dept

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887