Fractional Crystallization definition of Fractional Crystallization in the Free Online Encyclopedia.

fractional crystallization [¦frak·shən·əl ‚krist·əl·ə′zā·shən]

(petrology)

Separation of a cooling magma into multiple minerals as the different minerals cool and congeal at progressively lower temperatures. Also known as crystallization differentiation; fractionation.

Fractional Crystallization

a means of separating and purifying substances by converting them into a solid state during crystallization from a solution or melt. Crystallization can occur as a result of cooling, introduction of impurities that lower the solubility, or isothermal evaporation of the solvent. The effectiveness of the separation depends on the ratio of the quantities of the separable components, on their solubility, and on the conditions of the fractional crystallization. If substances being separated are present in comparable quantities, each component solidifies independently. If one of the components is present in trace quantities, it may coprecipitate rather than forming an independent solid phase with the macrocomponents. Fractional crystallization is a multiphase process that is used for the separation of substances with nearly identical chemical properties—for example, compounds of niobium and tantalum and of radium and barium.

REFERENCE

Bresler, S. E. Radioaktivnye elementy, 3rd ed. Moscow, 1957.

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	Komatiitic basalts can be derived from komattites by fractional crystallization or by fractional crystallization accompanied by crustal contamination. Igneous rock associations 10. Komatiites by Dostal, Jaroslav / Geoscience Canada Characterization Fractional crystallization measurements were made by differential scanning calorimetry (DSC). Crystallization and chemi-crystallization of recycled photodegraded ... by Craig, I.H.; White, J.R. / Polymer Engineering and Science 12]MDI-48) using fractional crystallization methods. TPU from aliphatic diisocyanates by O'Connor, James M. / Rubber World	FQHC FQL Fr fr. FR4 Fra Fra Diavolo Fracastoro, Girolamo Frachon, Benoit Frachon, Benoît fractable fractal fractal compression fractal dimension fractal dimensionality fractal geometry fractal persistence length Fractals Fraction fraction defective fraction in lowest terms fraction kill hypothesis Fractional Analysis Fractional and Integral Parts of a Number Fractional Condensation Fractional Crystallization fractional distillation fractional equation fractional factorial experiment fractional gas-flow curve fractional horsepower motor fractional ideal Fractional Precipitation fractional quantum Hall effect fractional replicate fractional sampling fractional sine wave fractional T1 fractional T3 Fractional Units fractionating column fractionation fractionator fractoconformity Fractography fracton fracton dimension Fracture fracture cleavage fracture dome fracture load	Fraction Unbound in Plasma Fraction-Absorbed Photosynthetically Active Radiation Fraction-Specific Thermal Processing fractional fractional fractional fractional Fractional Analysis Fractional Analysis of Bronchoalveolar Lavage Fractional and Integral Parts of a Number fractional anisotropy Fractional Area Change for the Free Wall Fractional Auto-Regressive Integrated Moving Average Fractional Blood Volume Fractional Brownian motion Fractional Brownian motion Fractional Brownian Motion Process Fractional Calculus and Applied Analysis fractional catabolic rate fractional catabolic rate fractional catabolic rate Fractional Channel Reservation Fractional Channel Reservation with Handoff Prioritization Fractional Coin Fractional coins Fractional Component Thereof Fractional Concentration of Inspired CO2 fractional condensation Fractional crystallisation Fractional crystallisation Fractional Crystallization fractional currency Fractional Currency Collectors Board Fractional Delay Waveguide Filter Fractional Delivered O2 Concentration Fractional Delivery of Oxalate Fractional Delivery of Phosphate Fractional Digital Subscriber Line fractional dilation and curettage FRACTional dimensionAL Fractional Direct Dialysis Quantification Fractional discretion order Fractional Discretion Orders Fractional Distal Reabsorption of Na fractional distillation fractional distillation fractional distillation fractional distillation Fractional Dlearances of Neutral Dextran Fractional E1 Fractional Enhancement at 30 Minutes fractional equation Fractional Exchange Ratio Fractional Excretion of Lithium Fractional Excretion of Magnesium Fractional Excretion of Oxalate Fractional Excretion of Phosphate Fractional excretion of sodium Fractional excretion of sodium

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

Komatiitic basalts can be derived from komattites by fractional crystallization or by fractional crystallization accompanied by crustal contamination.

Igneous rock associations 10. Komatiites by Dostal, Jaroslav / Geoscience Canada

Characterization Fractional crystallization measurements were made by differential scanning calorimetry (DSC).

Crystallization and chemi-crystallization of recycled photodegraded ... by Craig, I.H.; White, J.R. / Polymer Engineering and Science

12]MDI-48) using fractional crystallization methods.

TPU from aliphatic diisocyanates by O'Connor, James M. / Rubber World

Fraction Unbound in Plasma
Fraction-Absorbed Photosynthetically Active Radiation
Fraction-Specific Thermal Processing
fractional
fractional
fractional
fractional
Fractional Analysis
Fractional Analysis of Bronchoalveolar Lavage
Fractional and Integral Parts of a Number
fractional anisotropy
Fractional Area Change for the Free Wall
Fractional Auto-Regressive Integrated Moving Average
Fractional Blood Volume
Fractional Brownian motion
Fractional Brownian motion
Fractional Brownian Motion Process
Fractional Calculus and Applied Analysis
fractional catabolic rate
fractional catabolic rate
fractional catabolic rate
Fractional Channel Reservation
Fractional Channel Reservation with Handoff Prioritization
Fractional Coin
Fractional coins
Fractional Component Thereof
Fractional Concentration of Inspired CO2
fractional condensation
Fractional crystallisation
Fractional crystallisation

Fractional Crystallization

fractional currency
Fractional Currency Collectors Board
Fractional Delay Waveguide Filter
Fractional Delivered O2 Concentration
Fractional Delivery of Oxalate
Fractional Delivery of Phosphate
Fractional Digital Subscriber Line
fractional dilation and curettage
FRACTional dimensionAL
Fractional Direct Dialysis Quantification
Fractional discretion order
Fractional Discretion Orders
Fractional Distal Reabsorption of Na
fractional distillation
fractional distillation
fractional distillation
fractional distillation
Fractional Dlearances of Neutral Dextran
Fractional E1
Fractional Enhancement at 30 Minutes
fractional equation
Fractional Exchange Ratio
Fractional Excretion of Lithium
Fractional Excretion of Magnesium
Fractional Excretion of Oxalate
Fractional Excretion of Phosphate
Fractional excretion of sodium
Fractional excretion of sodium