Min. [UNI- 2.] (See quot. from Dana.) Also attrib.
1879. Rutley, Stud. Rocks, x. 140. In chemical composition the garnets are essentially unisilicates of different sesquioxides and protoxides.
1879. Dana, Man. Min. (ed. 3), 242. In the Unisilicates, one molecule of silicon is combined with two of an element in the protoxide state…; or with two-thirds of a molecule in the sesquioxide state. Ibid. Among the species referred to the Unisilicates there are some that vary from the unisilicate ratio.
