Calc–silicate rock

A calc–silicate rock is a rock produced by metasomatic alteration of existing rocks in which calcium silicate minerals, such as diopside and wollastonite, are produced.^[1] Calc–silicate skarn or hornfels occur within impure limestone or dolomite strata adjacent to an intruding igneous rock.^[2]

Calc-silicate rock from San Benito County, California