Fig. 2. Harker diagram showing SiO₂ wt. % versus MgO wt. % in Hermon-type granites. Data are from Carl and deLorraine (1997) and Table 1. Solid diamond = Gray's School; solid square = Hermon Village; solid triangle = Trout Lake; X = Sherman Lake; star = Ore Bed Road; open circle = Shiner Pond; plus = Mott Creek; solid circle = Fullerville; dash = Fowler.