This study is focused on the vibrational and microstructural aspects of thermally induced transformation serpentine-like garnierite into quartz, forsterite, enstatite occurring at about 620 °C. Powder specimens were annealed in static air between room temperature 1000 The kinetic was investigated by means thermogravimetric differential thermal analysis, final product extensively characterized v...

Abstract Aim of study was to verify the effect temperature on pozzolanic reactivity thermally activated attapulgite and sepiolite samples. Activation temperatures were selected: 650, 700 750 °C for 800, 825 850 sepiolite. Content reactive SiO 2 Al O 3 after thermal treatment amount Ca(OH) consumed in reaction measured. It should be noted that a higher activation improves The upper limit increas...

Meteoritical Bulletin 110 contains the 2802 meteorites approved by Nomenclature Committee of Society in 2021. It includes 10 falls (Arpu Kuilpu, Djadjarm, Glendale, Kindberg, Madura Cave, Motopi Pan, Orconuma, Punggur, Tihigrin, Winchcombe), with 2014 ordinary chondrites (including 1 ungrouped chondrite), 220 carbonaceous 11 ungrouped), 212 HED achondrites, 69 lunar meteorites, 62 ureilites, 43...

Microstructural control of MgO–Al2O3–SiO2 (MAS) glass-ceramic (GC) with precipitated enstatite (MgSiO3) in the 0.68–12 µm range from a parent glass having one composition was achieved by using titanium oxides varying particle sizes and crystallinities as nucleation agents. Specifically, compared MAS-GC prepared TiO2 50–200 nm relative high crystallinity (TiO2-L-H), mixing TiO2-L-H single nanome...

Experimental studies exhibit a wide variety of dissolution rates for given mineral depending on the chemical conditions and also type experiment conducted. As relevant example, studie...