A Geoscience Digital Image Library

TitleDomeykite from Houghton, Michigan
DescriptionThe light colored mineral is quartz, the darker one is domeykite. Domeykite, Cu3As (copper arsenide), is a semi-metal alloy of copper and arsenic. It is found at several copper mines in Chile and in Michigan's Upper Penninsula (this sample) and is named for a nineteenth century Chilean mineralogist named Ignacio Domeyko. Domeykite is a minor copper ore mineral and is sometimes cut and polished to produce an unusual colored metallic gemstone.
LocationUSA ▹ Michigan. Near Houghton.
PhotographerDarla Sondrol. 2001-07-10.
CollectionUniversity of North Dakota Mineralogy Collection #162.
Key wordsdomeykite, Michigan
Tech details404 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1113