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Piece of ± 9.8 x 5.7 cm and 86 grams. The piece is sectioned because this mineral is found within arsenic and copper.
Mohawkite is a rare mineral consisting of a mixture of arsenic and copper, mainly in the form of arsenide, and is usually found in the matrix of white quartz. Its formula varies from Cu3As to Cu6As, also called cottonite.
Mohawk Mine, Keweenaw Peninsula, Michigan, USA