The Corrego Frio pegmatite, Minas Gerais; scorzalite and souzalite, two new phosphate minerals

"This paper describes the structure and mineralogy of a pegmatite that has yielded three new phosphate minerals in recent years. The pegmatite is well zoned into three structural units of characteristic texture and mineral association. The minerals present include albite, muscovite, quartz, scorzalite (new mineral), souzalite (new mineral), brazilianite, apatite, zircon, tapiolite, and two unidentified phosphate minerals. Detailed descriptions, with chemical analyses, are given for scorzalite and souzalite, both of which are hydrous iron magnesium aluminum phosphates. Scorzalite is isomorphous with lazulite; the structural relationships of souzalite are not known."