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A lime-bearing silicate derived from nearly pure limestone and dolomite with the introduction of large amounts of silicon, aluminum, iron, and magnesium.



a metasomatic rock composed of calcareous, magnesium, and iron silicates and aluminosilicates and originating in a high-temperature aureole of magmatic rocks as a result of the chemical interaction of carbonaceous rocks with magma, intrusive rocks, or other aluminosilicate rocks in hot, magmatogenic solutions. A distinction is made between calcareous skarns and magnesian skarns. Calcareous skarns are composed of calcium, magnesium, and iron silicates and aluminosilicates; they include pyroxenes of the diopside-hedenbergite series and garnets of the grossular-andradite series and originate chiefly at shallow and moderate depths (up to 10-12 km) in the postmag-matic stage in contact limestones with aluminosilicate rocks. Magnesian skarns have magnesium-bearing minerals and include forsterite, diopside, spinel, and phlogopite; they are formed during the reactive interaction of dolomites with intrusive magma or at great depths (more than 10–12 km) in contact with aluminosilicate rocks in the postmagmatic stage.

Skarns are chiefly contact lenticular and sheet-like deposits; tubular or veined bodies in carbonate or aluminosilicate rocks are less common. Skarn bodies have a characteristically zonal structure. Large ore bodies, especially those of iron, copper, lead, zinc, tungsten, and molybdenum, and bodies of nonmetal-lic useful minerals, such as phlogopite and borates, often coincide with skarns. These special types of deposits—”skarn deposits”—are of considerable commercial significance. In the USSR, for example, such ore deposits include the Magnitogorsk iron-ore deposit in the Urals, the Sokolov-Sarbai iron-ore deposit in Kazakhstan, the Altyn-Topkan complex-ore deposit in Middle Asia, and the Tyrnyauz tungsten-molybdenum ore deposit in the Caucasus. Analogous nonmetal deposits of borates are located in Siberia, and those of phlogopite are located in the Baikal Region, on the Aldan Plateau, and in the Pamirs.


Korzhinskii, D. S. “Ocherk metasomaticheskikh protsessov.” In Osnovnye problemy ν uchenii o magmatogennykh rudnykh mestorozhdeniiakh, 2nd ed. Moscow, 1955.
Zharikov, V. A. “Skarnovye mestorozhdeniia.” In Genezis endogennykh rudnykh mestorozhdenii. Moscow, 1968.


References in periodicals archive ?
Wildcat Silver's President and COO, Don Taylor, said "The Sulfide Skarn Zone represents a separate and distinct project from the Manto Oxide Zone, providing another positive addition to Hermosa.
The work has generated an attractive new project located 40km west of Kempsey, where previous exploration had identified tin skarn (Basin One prospect) and Intrusion-Related Gold mineralisation in the Mt Jacob - Willi Willi area (Figure 1 in link below).
Infill diamond drilling in planned stopes at the Bob Zone is designed to identify areas with Skarn lithology in proximity to the gold mineralization.
COMMENT: The Chontash Project was acquired in 2010 and the independent maiden resource estimate showed two types of potentially economic mineralization; a molybdenum skarn with some copper and gold enrichment (2.
750m gold skarn target area, referred to as Aguas Claras, in the western part
The third hole is targeted on the Dos Naciones skarn zone, located approximately 3.
The drilling is targeting skarn copper-zinc and porphyry hosted copper mineralisation identified by geochemical, magnetic and Induced Polarisation (IP) anomalies.
Exploration efforts to-date have included field geologic mapping, soil sampling and geophysical work resulting in the identification of a large gold-bearing skarn zone on the surface over an area of 1,200 meters by 150 meters.
Stewart, explained; "The current drilling program has intersected the mineralized skarn intersected in DDH-07-2011 to the west and at depth.
4 m in skarn, as stated in a report by PL (not NI 43-101-compliant).
The program was successful in delineating the extent of the flat-lying gold (plus copper/silver) skarn zone present on the property.