Calc–silicate rock

File:Silica Carbonate Rock - Metamorphic Rock San Benito County California 1622.jpg]]

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.{{Cite journal|last=Whitley|first=Sean|last2=Halama|first2=Ralf|last3=Gertisser|first3=Ralf|last4=Preece|first4=Katie|last5=Deegan|first5=Frances M|last6=Troll|first6=Valentin R|date=April 2020|title=Magmatic and Metasomatic Effects of Magma–Carbonate Interaction Recorded in Calc-silicate Xenoliths from Merapi Volcano (Indonesia)|url=https://doi.org/10.1093/petrology/egaa048|journal=Journal of Petrology|volume=61|issue=4|doi=10.1093/petrology/egaa048|issn=0022-3530|doi-access=free}} Calc–silicate skarn or hornfels occur within impure limestone or dolomite strata adjacent to an intruding igneous rock.[https://mrdata.usgs.gov/geology/state/sgmc-lith.php?text=calc-silicate+rock Geologic units containing calc-silicate rock, USGS]