A skarn formed within the igneous mass itself, usually late in the intrusive emplacement and consisting of cross-cutting stockworks, cooling joints and around the margins and uppermost sections of the intrusion itself.

Exoskarn and endoskarn are common terms used to indicate a sedimentary or igneous protolith, respectively. Magnesian and calcic skarn can be used to describe the dominant composition of the protolith and resulting skarn minerals.

Apr 23, 2023 · Skarns can be divided into sub-sections according to certain criteria: Skarn can be classified according to its Protolith. If sakarn protolith is sedimentary origin, it can be reffered to as an exoskarn. If the protolith is ignouse rock, it can be called an endoskarn.

Hornfels, Reaction Skarn, Skarnoid, and Skarn Calc-silicate rocks associated with skarn deposits display a broad range of textures, compositions, and origins, because individual skarn deposits commonly are formed in complex, mixed host rocks, including carbonate, shale, volcanic, and plutonic rocks. At one

Depósitos tipo skarn: endo y exoskarn El endoskarn ocurre principalmente en la periferia de los plutones intrusivos donde el flujo de Fuidos fue hacia adentro del plutón o paralelo al contacto de éste.

Skarn is an old Swedish mining term originally used to describe a type of silicate gangue, or waste rock, associated with iron-ore bearing sulfide deposits apparently replacing Palaeoproterozoic age limestones in Sweden's Persberg mining district.

Nov 2, 2007 · Exoskarn and endoskarn are common terms used to indicate a sedimentary or igneous protolith, respectively. Magnesian and calcic skarn can be used to describe the dominant composition of the protolith and resulting skarn minerals.

Skarns can form on both sides of the boundary between a magma body and its surrounding rock mass. Those formed on the igneous side of the contact are known as endoskarns. Those formed on the country-rock side of the contact are known as exoskarns.

SKARN Magnetite Andradite MARBLE FXG. 1. Schematic representation of the skarn zonation between the metachalk xenolith and vent pyroclastics. The exoskarn, developed at the expense of the limestone, consists of fractured yellow andradite garnet. The endo- skarn, developed in the agglomerate, consists of andradite-

Dec 12, 1992 · Seven major classes of skarn deposits (Fe, W, Au, Cu, Zn, Mo and Sn) are briefly described, and relevant geological and geochemical features of important examples are summarized in a comprehensive table.