calc-silicate hornfels

calc-silicate hornfels

[‚kalk ′sil·ə‚kāt ′hȯrn‚felz]
(petrology)
A metamorphic rock with a fine grain of calcium silicate minerals.
References in periodicals archive ?
These rocks also host calc-silicate hornfels and skarn zones associated with the intrusion of the Tombstone age Antimony Mountain stock.
All the deposits at Elkhorn are associated with metasomatic replacement of calc-silicate hornfels and marbles by diorite to quartz monzonite intrusive bodies.
A Touchstone Resources core hole in 1990, situated 350 metres west of the main "Horst" CS gold target, encountered silica-epidote replaced calc-silicate hornfels, possibly a slump block of mineralized Paleozoic basement rocks from the adjoining "Horst" target area, at depths of 373 to 400 feet in the drillhole, with up to 5-10% pyrite and anomalous gold, silver and arsenic.