The California spiny lobster (Panulirus interruptus) is a species of spiny lobster found in the eastern Pacific Ocean from Monterey Bay, California to the Gulf of Tehuantepec, Mexico.
The word gypsum is derived from the Greek word Î³ÏÏÎ¿Ï (gypsos), plaster. Because the quarries of the Montmartre district of Paris have long furnished burnt gypsum (calcined gypsum) used for various purposes, this dehydrated gypsum became known as plaster of Paris.
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Gypsum is Not Radioactive : Gypsum Classification: Dana Class: 29.06.03.01 Hydrated Acid and Sulfates : where A XO4 Â· x(H2O) Dana Group : 29.06.03.01 Gypsum CaSO4â¢2(H2O) A2/a 2/m : Strunz Class: