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How are crystals formed and how does the rate effect the crystal?
Wiki User
∙ 12y ago
Crystals that are formed below the surface are formed by the cooling of magma. Crystals above the surface are formed when a volcano erupts, and cools, again, above the surface. Crystals that are below the surface usually have a slower rate of cooling than those above the surface, causing bigger crystals because of the slower cooling:)
Wiki User
∙ 12y ago
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How does the rate of cooling affect crystal growth in igneous rock?
The most common effect is that more and smaller crystals form than would be formed with slow cooling of the same mass of the same crystalizable material, and the incidence of crystal defects is higher because the rapidity of crystal formation does not permit the correction of initially formed defects by interchange of atoms or other crystal forming units between the liquid and solid phases that can occur during slow crystallization.
What determines the size of a mineral crystal formed from magma?
The rate at which magma cools determines the size of the mineral crystal.
What affects the size of crystals formed from magma?
The rate at which the magma cools affects the size of the crystals that form. If it cools slowly, large crystals will form. If it cools rapidly, small crystals will form.if it takes the rock a long time to cool down the crystals will be bigger if the rock takes a short time to cool the crystals will be smaller
How is the size of mineral crystals in igneous rock related to the rate at which they cool?
When igneous rocks cool quickly, they have small crystals and have a texture that may be described as aphanitic. When igneous rocks cool slowly, they have much larger crystals and have a texture that may be described as phaneritic or pegmatitic.
Why do some rocks have crystal?
it all depends on the rate of cooling and crystallisation and the type of rock
What effect does the the the rate that magma cools have on crystal formation?
if lava cools slowly, it will have a lot of crystals. When it cools fast, there will be little to no crystals what s ever.
What factors causes the difference in the size of crystals formed?
factors include: saturation, rate of cooling, temperature, and the crystal itself...
How does the rate of cooling affect crystal growth in igneous rock?
The most common effect is that more and smaller crystals form than would be formed with slow cooling of the same mass of the same crystalizable material, and the incidence of crystal defects is higher because the rapidity of crystal formation does not permit the correction of initially formed defects by interchange of atoms or other crystal forming units between the liquid and solid phases that can occur during slow crystallization.
What determines the size of a minerals crystals?
The rate at which magma cools determines the size of the mineral crystal.
What is the affect of temperature on crystal growth?
Temperature doesn't really affect the crystal size; the rate of cooling is the major factor. The faster the mineral, rock, etc. (whatever has the crystals) cools, the smaller the crystals- the slower the larger. If you were "growing" crystals with a set, the warmer the temperature generally means the larger the crystals.
What factors difference in the size of crystal formed?
Crystal size is determined by several factors. However, it essentially boils down to rate of nucleation and rate of diffusion. A low nucleation rate with high diffusion rate will cause very large crystals to grow, whereas a high nucleation rate with low diffusion will cause very small crystals to grow. Previously, it was commonly believed that cooling rate was a strong influence. The ideas was that if a melt took a long time to cool, crystals would have more time to grow. However, recent studies examining pegmatitic (very large crystals) rocks have shown that cooling of these bodies happens extremely quickly. One proposed explanation is that the amount of water present in the melt is much more important.
What determines the size of a mineral crystal formed from magma?
The rate at which magma cools determines the size of the mineral crystal.
Will different liquids effect the growth of a plant?
Crystals are grown for both scientific purposes and for experimentation in labs or science fairs, to demonstrate the various properties of different kinds of crystal formation. In all kinds of formation, the constant temperature plays an important role in crystal development, affecting not only how fast the crystals develop but the ways in which they grow. Read more: How Does Temp Affect the Growth Rate of Crystals? | eHow.com http://www.ehow.com/about_6318908_temp-affect-growth-rate-crystals_.html#ixzz2K4J5sgBq
Explain pegmatite is coarse grained with large crystals basalt is fine grained with small crystals and obsidian has no crystals?
Crystal size in these rock types is determined by their rate of cooling. Pegmatites have large crystals due to very slow cooling. Obsidian has microscopic crystals due to almost instantaneous cooling.
How does the rate of evaporation affect crystal growth and why?
When attempting to crystalize a material, it is important to understand that the slower the crystal grows, the purer the final crystal will be. This is because if the temperature or polarity or pressure or related crytal growth factor is changed too rapidly, it will cause multiple chemicals within the solution to "crash out" By a similar logic, the rate of evaporation effects crystal growth because the faster it is, the less solution there is and, as such, the solubility of virtually all compounds decreases. If you have a rate of evaporation that is too fast, the solubilites of many chemical compounds (impurities) will change along with the solubility of the compound you are trying to crystalize and your crystal will have impurites. However, having a rate of evaportation that is too low can also dramtically increase the time of crystalization!
What is the name of igneous rocks that have large crystals and small crystals?
Large Crystals = Intrusive Small Crystals = Extrusive The name relates to where the minerals were cooled (at at what rate). In the case of intrusive igneous, the rocks were formed above Earth's surface and were thus cooled quickly and the minerals had little time to become defined. Extrusive rocks, therefore, were formed within the Earth's mantle and had a much longer time before being gathered to cool (as they slowly rose to the top).
What affects the size of crystals formed from magma?
The rate at which the magma cools affects the size of the crystals that form. If it cools slowly, large crystals will form. If it cools rapidly, small crystals will form.if it takes the rock a long time to cool down the crystals will be bigger if the rock takes a short time to cool the crystals will be smaller
