- Montmorillonite, Quartz
- Cabinet, 11.8 x 7.7 x 6.9 cm
- White Queen Mine, Hiriart Mountain (Heriart; Heriot; Hiriat Hill), Pala District, San Diego Co., California, USA
Montmorillonite falls into the categories of clays - in this case, with a slightly pink tone, richly included inside of a cluster of intergrown, LARGE, sharp quartz crystals. The biggest crystal here is skeletal internally, and is wrapped around a smaller crystal of more conventional form. The quartz has a superb GLASSY luster. Old material from San Diego, circa 1950s-70s.