Crystal-containing rock

Usage examples of geode.

Not the least curious part of this outcrop is the black thread of iron silicate which, broken in places, subtends it to the east: some specimens have geodes yielding brown powder, and venal cavities lined with botryoidal quartz of amethystine tinge.

The music swelled in a crescendo, cube-drums, ice-horns, percussion geodes, and more, all in perfect harmony.

Quantities of quartz crystals, geodes, apache tears, jasper pebbles, moonstone beads, and….

Treasure seekers of this kind found a stone that looked like a geode in 1961 near Olancha, on the edge of the Amargosa Desert.