Evidence for recrystallization and fluid advection in the Maldives using the sulfur isotopic composition of porewaters, carbonates, and celestine

Evidence of magnetite reduction and primary magnetization destruction during early diagenesis in sediments from Maldives Inner Sea

“…At Site U1471, the upper 10 mbsf are affected by currents that cause the advection of bottom waters through the upper portion of the sediments (Kramer et al, 2000;Swart, 2000;Moore and Swart, 2022). The almost complete dissolution of magnetite in the upper 2 mbsf and the subsequent growth of greigite from an SP size to an SD size with a measurable signal, as found at 3.06 mbsf, indicates that at some point between these two events Fe 2+ was available to be transported by diffusion and/or advection of the interstitial water and recrystallize in a different stratum.…”

The Optimization of the Strontium Compounds Production, Using a Celestine Ore Sample

“…A water-soluble SrS is produced by reducing SrSO 4 with coke (or coal) at temperatures over 1000°C in the black ash process. The precipitation of strontium carbonate occurs by using soda ash, ammonium bicarbonate, or CO 2 after the sulfide is leached in hot water (Moore and Swart, 2022). Additionally, sodium sulfate is produced as a by-product of a double decomposition reaction taking place in a hot sodium carbonate solution (more than 90°C) on finely powdered celestite.…”