![33.1 Feldspathic arenite. Near Holbrook, Arizona. Cream-colored feldspar—and variously colored, but dominantly gray glassy quartz—dominate this sandstone, which also contains black lithic clasts. Hematite cement gives the rock a pink cast. [Scale is standard GSA scale with cm divisions.]](../33.1.JPG)
33.1 Feldspathic arenite. Near Holbrook, Arizona. Cream-colored feldspar—and variously colored, but dominantly gray glassy quartz—dominate this sandstone, which also contains black lithic clasts. Hematite cement gives the rock a pink cast. [Scale is standard GSA scale with cm divisions.]