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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.
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 ...
The composition of plagioclases is often expressed as a molar percentage of An%, or (for a specific quantity) An n, where n = Ca/(Ca + Na) × 100. [8] This equation predominantly works in a terrestrial context; exotic locales and in particular Lunar rocks may need to account for other cations, such as Fe 2+ , to explain differences between ...
The Chiefs, at 13-1, can clinch the top seed in the AFC if they beat both the Texans and Steelers. That would go a long way in not only the Chiefs’ quest at a third consecutive Super Bowl win, ...
The flow was about 185,000 m 3 (6,500,000 cu ft) in 24 hours -- ca. 2.3 m 3 /s (80 cu ft/s) [3]. Directly after its filtering tank, near the seventh mile of the Via Latina , it finally emerged onto arches, which increase in height as the ground falls toward the city, reaching over 30 metres (100 ft) [ citation needed ] .
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It also occurs as radiating groups and fibrous masses. Epitaxial intergrowths (intergrowths of two different crystalline substances in a non-random way) with mesolite, Na 2 Ca 2 Al 6 Si 9 O 30 ·8H 2 O, are common. (Natrolite, Na 2 Al 2 Si 3 O 10 ·2H 2 O, does not directly form epitaxial overgrowths on scolecite). All three minerals may be ...