Skeletal biomineralisation by microbial eukaryotes significantly affects the global biogeochemical cycles of carbon, silicon and calcium. Non-skeletal biomineralisation by eukaryotic cells, with precipitates retained within the cell interior, can duplicate some of the functions of skeletal minerals, e.g. increased cell density, but not the mechanical and antibiophage functions of extracellular ...


 The article describes Reza gold deposit of Ugur exploration area located in Geda- bek Ore District the Lesser Caucasus NW Azerbaijan. It is established that main mineralization consists hematite-barite-quartz-kaoline veins- veinlets and breccia, pyrite stock-stockverk quartz-sulfide veins. On orebody surface center secondary quartzites with vein-veinlets barite-hematite have occured over...

Abstract Barite concrete composite materials have been investigated for 252 Cf spontaneous neutron and 60 Co/ 192 Ir gamma sources’ shielding using Monte Carlo computational method. The Particle Heavy Ion Transport code System (PHITS) was used to compute the properties of three different (barite concrete, barite cement, aggregate) as structural walls in fixed & industrial radiography Non-De...

Abstract The Niederschlag fluorite-barite vein deposit in the Western Erzgebirge, Germany, has been actively mined since 2013. We present results of a first comprehensive study mineralogy, petrography, fluid inclusions, and trace element geochemistry fluorite related to deposit. Two different stages mineralization are recognized. Stage I is older, fine-grained, associated with quartz, forms com...

Barite stands out as one of the most ubiquitous scaling agents in deep geothermal systems, responsible for irreversible efficiency loss. Due to complex parameter interplay, it is imperative utilise numerical simulations investigate temporal and spatial precipitation effects. A one-dimensional reactive transport model set up with heterogeneous nucleation crystal growth kinetics. In line systems ...