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A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion (CAI) is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites. The four CAIs that have been dated using the Pb-Pb chronometer yield a weighted mean age of 4567.30 ± 0.16 Myr.
Krotite was reported in 2011 [3] in a calcium-aluminium-rich inclusion (CAI) in the carbonaceous chondrite meteorite NWA (North West Africa) 1934, which landed in Morocco. [4] The mineral name was approved by the International Mineralogical Association (IMA 2010-038) [ 5 ] and honors Alexander N. Krot, a researcher in cosmochemistry at the ...
The following inclusion types can also be found in aluminium alloys: alumina needles (Al 2 O 3), nitrides (AlN), iron oxides (FeO), manganese oxides (MnO), fluorides (Na 3 AlF 6, NaF, CaF 2, …), aluminium borides (AlB 2, AlB 12), borocarbides (Al 4 C 4 B). Bone ash (Ca 3 (PO 4) 2) sometimes added to patch cracks in the trough can be found as ...
A meteorite mineral is a mineral found chiefly or exclusively within meteorites or meteorite-derived material. [citation needed] This is a list of those minerals, excluding minerals also commonly found in terrestrial rocks.
Major and minor element concentrations are generally determined using EPMA and common element compositions include Si, Ti, Al, Cr, Fe, Mn, Mg, Ca, Ni, Na, K, P, Cl, F and S. [32] Knowledge of the oxide concentrations related to these major and minor elements can help to determine the composition of the parental magma, the melt inclusion and the ...
Al-Ca composite is a high-conductivity, high-strength, lightweight composite consisting of sub-micron-diameter pure calcium metal filaments embedded inside a pure aluminium metal matrix. The material is still in the development phase, but it has potential use as an overhead high-voltage power transmission conductor . [ 1 ]
Emigh-Winchell Hardware Company: 1920s. Santa Claus is front and center in this display within a window display circa 1920s that's all about toy trucks, cars and bikes.
The replacement of one divalent Ca 2+ cation by a trivalent Al 3+ cation, or to a lesser extent by a Fe 3+ cation, with a Ca:Al ratio of 2:1 (one Al substituted for every 3 cations) causes an excess of positive charge in the sheet: 2[2Ca (OH) 2 ·(Al,Fe)(OH) 2] + to be compensated by 2 negative charges X –.