Skarn deposits are therefore classified by their dominant economic element, such as copper (Cu) skarn deposit, or molybdenum (Mo) skarn deposit to name a few. • Sand, clay and silt are commonly found in limestone as impurities but not quite common in dolomite. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. There are two main types of carbonate rocks, dolomites and limestones. Limestones and dolomites. CONTACT; BLOG; PROJECTS; HELP; DONATE ; JOBS; VOLUNTEER; PEOPLE; search. Some features of the site may not work correctly. Depending on whether the alternation occurs during metamorphism, contact metamorphism can be divided into heat contact metamorphism and contact alternation metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite. Contact metamorphism and minor metasomatism, skarn formation, occurs in favorable locations. Contact metamorphism of shales leads to the formation of new minerals in them like corundum, rutile, andalucite and cordierite etc. Mineral Petrol 88:341–362, Ogasawara Y, Ohta M, Fukosawa K, Katayama I, Maruyama S (2000) Diamond-bearing and diamond-free metacarbonate rocks from Kumdy-Kol in the Kokchetav massif, northern Kazakhstan. 2. Am Mineralog 67:1101–1117, Cartwright I, Buick IS (1995) Formation of wollastonite-bearing marbles during late regional metamorphic channelled fluid in the Upper Calcsilicate Unit of the Reynolds Range Group, central Australia. Proc Geol Soc Lond 1599:10 pp, Fernández-Caliani JC, Galán E (1998) Effects of fluid infiltraion on wollastonite genesis at the Mérida contact-metamorphic deposits, SW Spain. This service is more advanced with JavaScript available, Petrogenesis of Metamorphic Rocks Earth Planet Sci Lett 184:529–534, Shirasaka M, Takahashi E, Nishihara Y, Matsukage K, Kikegawa T (2002) In situ X-ray observation of the reaction dolomite = aragonite + magnesite at 900–1300 K. Am Mineralog 87:922–930, Smit MA, Bröcker M, Scherer EE (2008) Aragonite and magnesite in eclogites from the Jæren nappe, SW Norway: disequilibrium in the system CaCO, Zhang L, Ellis DJ, Arculus RJ, Jiang W, Wei C (2003) ‘Forbidden zone’ subduction of sediments to 150 km depth – the reaction of dolomite to magnesite + aragonite in the UHPM metapelites from western Tianshan, China. These deposits have formed by contact metamorphism resulting from intrusion of hot magma into the upper crust. © 2020 Springer Nature Switzerland AG. Marly shales and limestones usually have low carbon (