show an exaggeration of the value of the ore. No mention is made of magnetite deposits in the Myers Creek district. 1911. Umpleby, J. B., Geology and ore deposits of the Myers Creek mining district: Washington Geol. Survey Bull. 5, pt. 1, pp. 1152.
Niki Foster. Magnetite is a type of iron oxide with natural magnetic properties. In fact, it is the most magnetic naturally occurring mineral on Earth and was once used in compasses. Its chemical name is ferrousferric oxide, and its chemical formula is Fe 3 O 4.. Magnetite was used by ancient civilizations to magnetize compass needles.