Mineralogy, chemistry and rock mechanic parameters of katoite-bearing rock from the Hatrurim Basin, Israel. (November 2018)

• Record Type: Journal Article
• Authors: Vapnik, Yevgeny; Palchik, Vyacheslav; Galuskina, Irina; Banasik, Kamila; Krzykawski, Tomasz
• Is Part Of: Journal of African earth sciences. Volume 147(2018)
• Page Start: 322
• Page End: 330
• Publication Date: 2018-11
• Subjects: Katoite-bearing rock -- Composition -- Mineralogy -- Pyrometamorphism -- Belite sulfoaluminate concrete -- Strength parameters; Earth sciences -- Africa -- Periodicals; Earth sciences -- Middle East -- Periodicals; Geology -- Africa -- Periodicals; Geology -- Middle East -- Periodicals; Sciences de la terre -- Afrique -- Périodiques; Sciences de la terre -- Moyen-Orient -- Périodiques; Géologie -- Afrique -- Périodiques; Géologie -- Moyen-Orient -- Périodiques; Earth sciences; Geology; Africa; Middle East; Periodicals; Electronic journals; 556.05
• DOI: 10.1016/j.jafrearsci.2018.06.020
• Languages: English
• ISSNs: 1464-343X

Abstract

Abstract: Katoite-bearing rock was revealed in the Hatrurim Basin, Israel. The rock formed by hydration of pyrometamorphic calc-silicate assemblages at temperatures higher than 200 °C. The likely age of the hydration process is Miocene, about 6.2 Ma. The main phases of katoite-bearing rock are minerals of the katoite-grossular series, calcium hydrosilicates, fluorapatite and carbonate. Chemistry and mineralogy of katoite-bearing rock resembles belite sulfoaluminate concrete. Studied samples show two sets of porosities, which are low and high, between 22 and 28% and between 29 and 39%, respectively. Increased porosity characterizes non-weathered katoite-bearing samples, whereas decreased porosity is linked to carbonation during weathering. Katoite remained stable in spite of natural alkaline leaching. Although high porosity samples display decreasing strength parameters, most observed rock mechanic characteristics are comparable to modern-day concrete. We suggest that obtained data on natural katoite-bearing rock can simulate the longevity and durability of belite sulfoaluminate concrete. Graphical abstract: Image 1 Highlights: Katoite-bearing rock genesis is related to hydration of pyrometamorphic calc-silicate assemblages. Rock forming minerals are katoite-grossular, fluorapatite, several calcium hydrosilicates, carbonate, and magnesioferrite. Katoite-bearing rock is a natural analogue of belite sulfoaluminate that survived in nature for a few million years. Most of measured rock mechanic parameters are in the range typical for modern-day concretes.