Zaratite

Zaratite with fingers for scale. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, Mineral Specimens 1221. Courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by Andrew Silver.)

Formula: Ni₃CO₃(OH)₄.4H₂O Isometric

Description:

Zaratite. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, Mineral Specimens 1222. Courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by Andrew Silver.)

Zaratite is a rare mineral forming secondary crusts on other nickel minerals. IMA views this is “doubtful” as a mineral species.

MILWAUKEE COUNTY: Zaratite is reported as an oxidation product found on millerite crystals collected from Estabrook Park in Milwaukee (sec. 5 T.7N. R.22E.) (Bagrowski, 1940).