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Perlite

Expanded perlite.

Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently. It is an industrial mineral, suitable "as ceramic flux to lower the sintering temperature", and a commercial product useful for its low density after processing.[1]

  1. ^ Reka, Arianit A.; Pavlovski, Blagoj; Lisichkov, Kiril; Jashari, Ahmed; Boev, Blažo; Boev, Ivan; Lazarova, Maja; Eskizeybek, Volkan; Oral, Ayhan; Makreski, Petre (24 October 2019). "Chemical, mineralogical and structural features of native and expanded perlite from Macedonia". Geologia Croatica. 72 (3): 215–221–215–221. doi:10.4154/gc.2019.18. ISSN 1333-4875. Retrieved 4 January 2020.

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بيرلايت Arabic Perlit AZ Перлит Bulgarian Perlita volcànica Catalan Perlit Czech Perlit (Gestein) German Περλίτης Greek Perlito EO Perlita (geología) Spanish پرلایت (زمین‌شناسی) FA

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