[1] Keweenawite was discovered in July 1901, in the Mohawk Mine, Keweenaw County, Michigan.
George A Koenig analyzed and named the copper ore.[2] Keweenawite was first discovered, in July 1901, located on the fifth level of the Mohawk Mine between Shaft No.
Fred Smith, mine superintendent, sent specimens to George A Koenig for analysis.
Koenig deemed it to be a new mineral species and named it keweenawite, after its discovery locality, Keweenaw County.
[3] However, a re-analysis of the material in 1971 found the keweenawite to be a mixture of the copper and nickel arsenates: α-domeykite, niccolite and rammelsbergite.