Veins in the combusted metamorphic rocks, Israel; Weathering or a retrograde event?

Gismondine-Sr, Sr4(Al8Si8O32)·9H2O, a new strontium dominant, orthorhombic zeolite of the gismondine series from the Hatrurim Complex, Israel

“…The pyrometamorphic rocks contain cracks, voids, and veins filled by low-temperature mineralization formed due to hydrothermal alteration and weathering (Kolodny et al 2014;, Kruszewski et al 2021). Gismondine-Sr was found in small amygdaloidal voids of partially melted gehlenite hornfels at wadi Halamish locality (N31°09′42″ E35°17′29″), which is located at the southern part of the Hatrurim Basin -the largest exposed field of pyrometamorphic rocks of the Hatrurim Complex in Israel (Burg et al 1992(Burg et al , 2000Vapnik et al 2007;Geller et al 2012).…”

Mineralogical Diversity of Ca2SiO4-Bearing Combustion Metamorphic Rocks in the Hatrurim Basin: Implications for Storage and Partitioning of Elements in Oil Shale Clinkering

“…Burg et al [48] divided the sequence of the MZ rocks into four mapping units and revealed spatial distribution of different types of CM rocks within the Hatrurim Basin. The basal strata are mainly composed of diverse brecciated and hydrothermally altered sedimentary (indurated chalk-like masses, indurated marls, limestone, less abundant chert and phosphorite) and metasedimentary rocks [1,50,51,64], which are crisscrossed by numerous veinlets [1, 67,69]. At the level of 10-40 m above the top of the sedimentary section, they include numerous subhorizontal bodies of highly-resistant gehlenite hornfelses (thickness up to 2 m and length up to 50-100 m) [48,64].…”

Fractures in mudrocks: Advances in constraining timing and understanding mechanisms

“…after hostsediment deposition. U-series disequilibrium (i.e., U-Th) measurements can constrain the timing of relatively recent calcite veins, including hydrothermal veins (Sturchio and Binz, 1988;Kolodny et al, 2014) and fault-related veins (Uysal et al, 2011), but to our knowledge has not been applied to mudrockhosted veins. Apart from these studies, most age-dates are from fault cements, whether using disequilibrium series (Gutmanis et al, 1991) or equilibrium (i.e., U-Pb- Coogan et al, 2016;Roberts and Walker, 2016;Nuriel et al, 2017), where carbonate slickenfibres are demonstrably synkinematic and may be uranium-rich.…”