WGNHS
Wisconsin Geological and Natural History Survey

Lazulite

Lazulite collected by N.H. Minerals Unlimited in 1992 from Palermo Quarry, North Gorton in New Hampshire. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, Mineral Specimens 701. Courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by Andrew Silver.)

Formula: (Mg,Fe)Al2(PO4)2(OH)2 Monoclinic

Description:

Lazulite is a rare bright blue mineral which can occur aluminum-bearing quartzites, quartz veins or granite pegmatites.

SAUK COUNTY: Olsen (1962) reports a 2 mm thick vein of lazulite cutting through a block of Baraboo quartzite found on a talus slope above Devil’s Lake in Sec. 30 T.11N R.7E, about 10 km south of Baraboo. Analysis of the lazulite showed that it also contained significant nickel and cobalt.