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Pegmatite is a light-colored, extremely coarse-grained intrusive igneous rock. It forms near the margins of a magma chamber during the final phases of magma chamber crystallization. It often contains rare minerals that are not found in other parts of the magma chamber.
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∙ 12y ago
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∙ 14y agoA pegmatite is a rock type defined not by its composition but by its mode of formation and 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 pegmatite crystals have grown to several meters across.
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∙ 12y agoPegmatite has a cleaved surface and is smooth for the most part depending on where it originated.
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∙ 12y agoThere are foliated and non-foliated metamorphic rock
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∙ 6y agoSome physical properties of garnets are:- density: 3,1-4,3 g/cm3- Mohs hardness: 6,5-7,5- Refractive index: 1,72-1,94- Crystalline structure: rombic tetrahedron
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Which characteristic provides the best evidence that pegmatite is solidified deep underground?
Very coarse texture.
When water evaporates its chemical composition?
The chemical composition remain unchanged.
When ice melts what happens to its chemical composition?
the chemical composition does not change.
Importance or usefulness of chemical composition?
Properties of materials depends on the chemical composition.
What is sandblasting of rock by changing its chemical composition?
No. The chemical composition remains the same.
Which characteristic provides the best evidence that pegmatite is solidified deep underground?
Very coarse texture.
What is chemical composition of kf reagent?
What is the chemical composition of kf reagent
When water evaporates its chemical composition?
The chemical composition remain unchanged.
When ice melts what happens to its chemical composition?
the chemical composition does not change.
Importance or usefulness of chemical composition?
Properties of materials depends on the chemical composition.
What is sandblasting of rock by changing its chemical composition?
No. The chemical composition remains the same.
What is a elemental composition?
This is the composition of a chemical compound expressed in contained chemical elements.
What is chemical composition of phosphorus?
Phosphorus is one of the chemical elements and therefore has no "chemical composition" in the usual sense.
In a physical change some of the physical properties of the substance may be altered and the chemical composition?
No. In a physical change, the substance maintains its chemical composition.
What are the chemical composition for gold dust and chemical formula?
Assuming your gold is pure : Chemical composition = Au Chemical formula = Au
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 the diffence between physical and chemical properties as well an physical and chemical changes?
Physical properties can be observed without changing the chemical composition of a substance. Chemical properties can only be observed by changing the chemical composition of the substance. In a physical change, the chemical composition of the substance does not change. In a chemical change, the chemical composition of the substance changes.
