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They are associated with the late stages of granite intrusions and the minerals formed in pegmatites literally had the time to enjoy the benefits of a slow crystallization process from a rich chemical stew produced by the cooling granite.
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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.
What is pegmatite texture?
A pegmatite texture in a rock is a course-grained Igneous Rock. Granite Pegmatite is a common Igneous rock
What is a fun fact about the Pegmatite rock?
The pegmatite rock is ahn Igneous rock.
Where can you find pegmatite?
in the core
How big are basalt crystals?
small
How does Beryl form?
Beryl is exclusively of a pegmatite mineral. When this pegmatite magma has a rich source of beryllium, the beryl crystals are formed. They are formed in high temperature veins by these beryllium bearing gas content.
How big can pegmatite get?
usually larger than 2.5 cm in size
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.
Are crystals worth a lot of money?
Yes,the crystals are so big to earn money
Why does alum make big crystals?
It's not that only alum makes big crystals.. There are so many compounds that can make big crystals. Even Sodium Hydroxide makes very good and big crystals. For crystals you need a uniform arrangement of atoms in space. For big crystals all you need is patience. The slower is the crystallization process the bigger crystals are formed. What industries do is called seeding. They make a good concentrated solution of the compound whose crystals are needed and then they put a crystal of the same compound in the solution. The new crystals form and attach to the crystal making quick and big crystals.
Why are the crystals in pegmatites so large?
Very large silicate mineral grains (crystals) indicate extremely fast, in-melt transport of the mineral constituents to the growing crystals. We know that pegmatite magmas are small volume, relatively low temperature melts that are extremely rich in water and other dissolved volatiles. The volatiles promote very fast rates of material transfer, thus accounting for rapid growth of very large crystals.
How do igneous rocks produce big or small crystals?
The small crystals are formed outside the volcano by the cold air... the cold air cools down the igneous rock and the crystals dont have time to join together so the are small. And the big crystals are formed inside the volcano very slowly and that way they have time to join together then there are big crystals that have been formed.
What is pegmatite texture?
A pegmatite texture in a rock is a course-grained Igneous Rock. Granite Pegmatite is a common Igneous rock
What is a pegmatite texture?
A pegmatite is an intrusive igneous rock comprised of coarse, interlocking mineral grains usually above three centimeters in diameter. Although very many pegmatites are granitic in composition, several hundred mineral species have been found in the most famous pegmatites worldwide, including many rare and valuable minerals. A few discovered pegmatite crystals have grown to several meters across.
What is a fun fact about the Pegmatite rock?
The pegmatite rock is ahn Igneous rock.
What kind of rock is pegmatite is it sedimentary igneous or metamorphic?
pegmatite rock is a igneous rock
Where can you find a pegmatite rock?
There is no such thing as a "pegmatite rock" in the Pokemon D/P games.
