Note 449 — Chapter IX · ON CONCRETIONS, SPICULES, AND SPICULAR SKELETONS
Reading edition
The anhydrite is sulphate of lime (CaSO4); the polyhalite is a triple sulphate of lime, magnesia and potash (2 CaSO4 . MgSO4 . K2SO4 + 2 H2O).
Reading edition
The anhydrite is sulphate of lime (CaSO4); the polyhalite is a triple sulphate of lime, magnesia and potash (2 CaSO4 . MgSO4 . K2SO4 + 2 H2O).