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Among other variants, the crystal size is dependent on the amount of chemical material available for growth, the temperature (and consistency of temperature) during formation, space available for growth, and time.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoDifferent types of rock crystals are exposed to different amounts of pressure and the environment could be different.
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Why do plutonic rock and volcanic rock have big and small crystals respectively?
The size of the crystals is a function of the rate of cooling of the molten rock. The faster the molten rock cools, the smaller the crystals will be.
What causes volcanic rock to have no crystals?
rapid cooling, so that crystals do not form.
Hollow rock with crystals called?
A hollow rock with crystals might be called a geode. A geode is a type of sedimentary rock that has crystals formed inside due to volcanic heating and cooling or by other chemicals seeping into the rock.
Must all rocks form crystals?
All rock does not contain mineral crystals. Obsidian, or volcanic glass, in particular is a rock that has cooled so quickly from lava that mineral crystals were not able to form.
What does grain-size tell you about the cooling history of a rock?
Slower rates of cooling will create larger crystals. Rapid cooling allows little time for element accumulation in the crystal, therefore, the crystals created will be smaller. Larger, visible crystals in igneous rock indicate that the magma was slow cooling, usually at depth. Much smaller crystals in igneous rock indicate rapid cooling of lava, usually at or near the surface. Crystals in igneous rock will grow larger and have more time to accumulate material for their growth the more time they have at their crystallization temperature.
What type of igneous rock has 2 sizes of crystals?
waka flakas head
Can sizes of crystals in sedimentary rock tell us how quickly the lava or magma cooled that formed the rock?
Yes it can.
What are crystals sizes?
All crystals are diffrent sizes ?
There are different sizes of these in different igneous rocks?
Different igneous rocks have different crystal sizes because they have cooled at different rates. Those with larger crystals have cooled at a slower rate. A single rock sample can have varying crystal sizes because there are different minerals within it. It is consistently the Quartz crystals in Granite which cool fastest, leaving less space for the Mica, which forms later. This means that the Quartz crystals are larger than others in the rock, resulting in an inconsistency in size.
When magma cools quickly what kind of txture or crystals dose that rock have?
A mixture of all types of grains or sizes of ctystals.
What rock has large inter grown crystals in thin bands?
Gneiss is a type of metamorphic rock that often exhibits large intergrown crystals in thin bands. It forms from the transformation of pre-existing rocks under high temperature and pressure conditions, resulting in a banded appearance with distinct layers of different mineral compositions and grain sizes.
What is a black intrusive rock with small crystals?
Intrusive rock normally has visible crystals. Extrusive igneous rock has small crystals. A black extrusive igneous rock with small crystals could be basalt.
What are physical properties of rock?
the physical properties of a rock are a solid molecules are close together different colors different sizes and different weight and different kinds
Why do rocks have grains?
Grains are the particles that make up a rock and may consist of eroded particles of various sizes of other rocks or mineral crystals.
Do crystals have the same shapes?
Crystals of the same substance form a similar structure in nature, but there are many basic crystaline structures in different substances
Does boiling salt water leave residue?
Yes it does. The water evaporates off leaving salt crystals behind. Depending on how fast you evaporate the water, different sizes of crystals are formed. The slower you evaporate, the larger the crystals.
How big are geodes?
they can vary in different sizes. depending on how the rock was broken.
