25.—Copper Nickel.
Occurs in masses; metallic lustre; color pale copper-red; tarnishes gray to black; powder pale brownish-black; brittle; on charcoal melts giving the odor of garlic; becomes green in nitric acid; gravity 7.5.
Value.—An ore of nickel (containing forty-four per cent.) and arsenic.
Localities.—Found in granite regions. Chatham, Conn.