fractional crystallization
31Geology of the Moon — The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to lunar science ) is quite different from that of the Earth. The Moon lacks a significant atmosphere and any bodies of water, which… …
32rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
33Recrystallization — (see also crystallization) is a physical process that has meanings in chemistry, metallurgy and geology.ChemistryIn chemistry, recrystallization is a procedure for purifying compounds. The most typical situation is that a desired compound A is… …
34Single crystal — A huge KDP crystal grown from a seed crystal in a supersaturated aqueous solution at LLNL which is to be cut into slices and used on the National Ignition Facility for frequency doubling and tripling. A single crystal or monocrystalline solid is… …
35Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …
36Mount Rinjani — 1995 eruption Elevation 3,726 m (12,224 ft) …
37Isoquinoline — Chembox new Name = Isoquinoline ImageFile = Isoquinoline chemical structure.png ImageSize = 450px ImageName = Chemical structure of Isoquinoline IUPACName = Isoquinoline OtherNames = benzo [c] pyridine, 2 benzanine Section1 = Chembox Identifiers… …
38Cucurbituril — Computer models of Q5, Q6, and Q7. Top row is the view into the cavity and the bottom is the side view Cucurbiturils are methylene linked macrocyclic molecules made of glycoluril [=C4H2N4O2=] monomers. The oxygen atoms are located along the edges …
39Flow banding — is a geological term to describe bands or layers that can sometimes be seen in rock that formed from the substance molten rock or magma. Flow banding is caused by friction of the viscous magma which is in contact with a solid rock interface,… …
40Calc-alkaline — and calc alkalic are equivalent terms applied to groups of igneous rocks that commonly occur together and that have compositions related by the characteristic chemical trends specified below. Understanding the genesis of these rocks is important …
