The specimen which furnished the material for this note was obtained at the Drummond mine, Coleman township, Ontario, and was kindly loaned by Dr. R. Harvie. It consisted of a confused mass of calcite crystals holding in small cavities crystals of stephanite and pyrite, together with small quantities of wire silver and argentite. Thru the kindness of Dr. Harvie the writer was permitted to remove two small crystals of the stephanite for measurement. The crystal habit is tabular, the base, the brachypinacoid and the unit prism being well developed. No evidences of the macropinaeoid could be obtained, and the domes are all relatively small. The first crystal examined proved to be a twin. The second crystal examined proved to be a trilling, on the unit prism o (110) in each case.

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