The book includes one of the earliest accounts of the process of fractional crystallization hypothesis of magma differentiation that was further developed and demonstrated in the 20th century.
32.
Magmatic processes important in the Central Andes include the partial melting of the subducting plate and its sediments and of mantle peridotite, and fractional crystallization in the crust.
33.
Fractional crystallization in silicate melts ( magmas ) is a very complex process compared to chemical systems in the laboratory because it is affected by a wide variety of phenomena.
34.
Zr and Hf can also be separated by fractional crystallization of potassium hexafluorozirconate ( K 2 ZrF 6 ), which is less soluble in water than the analogous hafnium derivative.
35.
The principal sources of rare earth elements are the minerals bastn�site, monazite, and loparite and the fractional crystallization and liquid-liquid extraction during the late 1950s and early 1960s.
36.
Flow banding is the result of a process of fractional crystallization that occurs by convection if the crystals that are caught in the flow-banded margins are removed from the melt.
37.
The chemical composition of the erupting lava depends upon the degree to which the mantle-derived basalt interacts with ( melts ) Earth's crust and / or undergoes fractional crystallization.
38.
Thus, as a melt undergoes fractional crystallization from a mafic to a more felsic composition, the abundance of Sm and Nd changes, as does the ratio between Sm and Nd.
39.
Flow banding is the result of a process of fractional crystallization which occurs by convection, if the crystals which are caught in the flow-banded margins are removed from the melt.
40.
However, a by-product of the fractional crystallization purification of neodymium was a mixture of samarium and gadolinium that acquired the name of " Lindsay Mix " after the company that made it.
