Editing Talc (section)

==Occurrence==
[[File:2005talc.png|thumb|left|Talc output in 2005]]
Talc is a common metamorphic mineral in metamorphic belts that contain [[ultramafic rock]]s, such as [[soapstone]] (a high-talc rock), and within whiteschist and [[blueschist]] metamorphic [[terrane]]s. Prime examples of whiteschists include the Franciscan Metamorphic Belt of the western United States, the western European [[Alps]] especially in Italy, certain areas of the [[Musgrave Block]], and some collisional [[Orogeny|orogens]] such as the [[Himalayas]], which stretch along [[Pakistan]], [[India]], [[Nepal]], and [[Bhutan]].

[[Talc carbonate]] ultramafics are typical of many areas of the [[Archean|Archaean]] [[craton]]s, notably the [[komatiite]] belts of the [[Yilgarn craton]] in [[Western Australia]]. Talc-carbonate ultramafics are also known from the [[Lachlan Fold Belt]], eastern [[Australia]], from [[Brazil]], the [[Guiana Shield]], and from the [[ophiolite]] belts of [[Turkey]], [[Oman]], and the [[Middle East]].

China is the key world talc and steatite-producing country with an output of about 2.2&nbsp;million tonnes (2016), which accounts for 30% of total global output. The other major producers are Brazil (12%), India (11%), the U.S. (9%), France (6%), Finland (4%), Italy, Russia, Canada, and Austria (2%, each).<ref>{{cite web|title=China, Brazil, the U.S. and India Remain the Major Consumers on the Global Talc Market |url=https://www.indexbox.io/blog/china-brazil-the-u-s-and-india-remain-the-major-consumers-on-the-global-talc-market/ |website=IndexBox |date=18 July 2018 |first=Anna |last=Sergeeva}}</ref>

Notable economic talc occurrences include the Mount Seabrook talc mine, Western Australia, formed upon a polydeformed, layered ultramafic intrusion. The France-based [[Luzenac Group]] is the world's largest supplier of mined talc. Its largest talc mine at Trimouns near [[Luzenac]] in southern France produces 400,000&nbsp;tonnes of talc per year.