Commercial Quarry, Sky Blue Hill, Crestmore quarries ...
Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Riverside Co., California, USA. ⓘ Ettringite. Formula: Ca 6 Al 2 (SO 4) 3 (OH) 12 · 26H 2 O. Description: Occurs as a vein filling in massive contact rock. Observed to be overgrown with a parallel-oriented coating of thaumasite.