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K3 can cause generation of reactive oxygen species (ROS) by redox cycling and arylation of thiols using its reactive 3-position. [6] ROS generation explains various toxic effects of excessive menadione, including DNA damage and cell death, [ 16 ] or on a whole-animal level, cardiac and renal toxicity in rats.
This list includes those recognised minerals beginning with the letter K.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.
Group-I kimberlites are of CO 2-rich ultramafic potassic igneous rocks dominated by primary forsteritic olivine and carbonate minerals, with a trace-mineral assemblage of magnesian ilmenite, chromium pyrope, almandine-pyrope, chromium diopside (in some cases subcalcic), phlogopite, enstatite and of Ti-poor chromite. Group I kimberlites exhibit ...
Lepidolite is the common name for a lilac-gray or rose-colored series of minerals in the mica group. The mineralogical name for this series is the polylithionite-trilithionite series. [4] Lepidolite has a chemical formula of K(Li,Al) 3 (Al,Si,Rb) 4 O 10 (F,OH) 2. [2] [3] It is the most abundant lithium-bearing mineral [5] and
And the other, in the journal Nature, found that the samples contained minerals formed when brine - salty water - evaporated on Bennu's parent body, the type of wet environment where prebiotic ...
This week, explore what lurks in asteroid dust, marvel at the world’s largest beaded burial, discover an elusive creature photographed for the first time, and more.
Water was lost to the surface and these minerals were left behind.” What’s happening on Bennu is likely happening elsewhere. The largest object in the asteroid belt, the dwarf planet Ceres ...
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