2023年4月23日 · Skarn, in geology, metamorphic zone developed in the contact area around igneous rock intrusions when carbonate sedimentary rocks are invaded by large amounts of silicon, aluminum, iron, and magnesium. Many skarns also include ore minerals; several productive deposits of copper or other base metals have been found in and adjacent to skarns.

Skarns or tactites are coarse-grained metamorphic rocks that form by replacement of carbonate-bearing rocks during regional or contact metamorphism and metasomatism.

skarn adalah istilah pertambangan Swedia pada zaman dahulu yang awalnya digunakan untuk menggambarkan jenis gangue silikat, atau batuan sisa, yang berasosiasi dengan bijih besi di endapan sulfida yang tampaknya menggantikan batugamping usia paleoproterozoikum di distrik pertambangan Persberg, Swedia.

Skarns or tactites are hard, coarse-grained metamorphic rocks that form by a process called metasomatism. Skarns tend to be rich in calcium-magnesium-iron-manganese-aluminium silicate minerals, which are also referred to as calc-silicate minerals.

Skarn commonly forms around the edges of a magma body that intrudes a nearby rock mass. Rocks formed or altered by the interaction of magma, country rock, reactive fluids, and heat are known as skarn. Other environments of metasomatic activity are also known to produce skarn.

Skarn, in geology, metamorphic zone developed in the contact area around igneous rock intrusions when carbonate sedimentary rocks are invaded by large amounts of silicon, aluminum, iron, and magnesium. The minerals commonly present in a skarn include iron oxides, calc-silicates (wollastonite,

2017年3月2日 · Emas-tembaga pada porfiri umumnya terletak di lingkungan busur kepulauan (island arc). Daerah tersebut mengalami penunjaman (subduction) yang kuat sehingga terjadi pengendapan mineralisasi porfiri (kasar), sebagai contoh misalnya busur magmatik PNG-Papua.

2022年8月6日 · Tujuan dari penelitian ini untuk mengetahui karakteristik mineralisasi dan geomikia bijih endapan skarn Pb-Zn-Cu-Ag dengan menggunakan metoda analisis petrografi, mikroskopis bijih, dan geokimia...

2007年11月2日 · There are many definitions and usages of the word "skarn". Skarns can form during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, meteoric, and/or marine origin.

Skarns are silicate rocks produced by the interaction between the hot hydrothermal fluids released by crystallizing magma with carbonate rocks – a process known as metasomatism.