Rock containing crystal

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.