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how and where would the rock might have been formed that has large crystals of feldspar mica and quartz?
Wiki User
∙ 11y ago
due to the large crystal grains of the rock and existence of feldspar and mica the rock could either be of igneous or metamorphic origin.incase it is of igneous origin the rock is intrusive igneous rock that form deep in the earth crust and cool at a relatively slow rate developing large crystals.in case of metamorphic origin the rock is high grade metamorphic rock that have experienced high metamorphic condition (high pressure and temperature);that is it is a gneiss that has characteristic coarse grains crystals.
Wiki User
∙ 11y ago
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What are porphyroblasts and how do they form?
A Porphyroblast is a large crystal formed on the inside of Metamorphic rocks.metamorphic rocks (in)...crystals showing planar surfaces-namely, magnetite, garnet, epidote, mica, calcite, quartz, and feldspar. Minerals that have a tendency to form large single crystals (e.g., garnet) are termed porphyroblasts
What is the size of crystals in granite?
The size of crystals that form granite are usually large and coarse-grained. Granite, which is mainly composed of feldspar, mica and quartz, is often used as a building material.
Where are crystals found?
In rocks, mines....practically everywhere. Crystals are found all around the world. One place is in caves where they can be quite large. Geodes contain crystals and there are many types/colors of crystals. One of the most common is quartz that is often white, but there is also smoky quartz, and rose quartz. Many gem stones are a form of crystals.
What type of rock has glass like large crystals?
Intrusive igneous rocks, (Plutonic rocks)
Which igneous rock contains the greatest amount of quartz?
yes NO. It helps form igneous rocks like granite along with mica and feldspar and other minerals, in basalts and gabbros there is no quartz but it does form silicates like olivine. When weathered out of igneous rocks like granite it will eventually be found on beaches as sand grains. It is found in metamorphic rocks where it usually forms large lenses, and in fault systems as masses of quartz and other churned up rock powder. It forms the major gangue or waste mineral in many metal mines.
What does granite form from?
In the volcano/magma chamber, different minerals that make up granite, (feldspar, quartz, etc.) mix to form grainy, large crystals of the different minerals. That is how granite is formed.
What are porphyroblasts and how do they form?
A Porphyroblast is a large crystal formed on the inside of Metamorphic rocks.metamorphic rocks (in)...crystals showing planar surfaces-namely, magnetite, garnet, epidote, mica, calcite, quartz, and feldspar. Minerals that have a tendency to form large single crystals (e.g., garnet) are termed porphyroblasts
What is the size of crystals in granite?
The size of crystals that form granite are usually large and coarse-grained. Granite, which is mainly composed of feldspar, mica and quartz, is often used as a building material.
Which large blocky feldspar is found most often in association with large muscovite crystals?
It is usually potassium feldspar, either microcline or orthoclase.
What are Large Crystals in The Rock that glitter in the sunlight?
Quartz
Igneous rocks with large crystals?
quartz
What does roseqaurtz look like?
Rose quartz comes in shades of pink, from very pale to very pink indeed. It has distinctive conchoidal fracture, and is usually opaque; though it can be transparent it is usually somewhat included, so facetted stones have a bit of a sleepy appearance. Rose quartz crystals are generally somewhat malformed, for some reason they are seldom either as large or as sharply formed as most quartz crystals. Eg. while a 10 cm razor sharp crystal of colorless, smoky, or purple quartz is no big deal, crystals of rose quartz that size and quality are unknown, and only Brazil has produced rose quartz crystals in quantity.
What is limon quartz?
Lemon quartz is a large crystalline quartz wherein individual crystals are distinguishable with the naked eye. Its transparent to translucent yellow color comes from iron.
What is granite made out of?
granite is an igneous rock and they are formed when molten rock (magma) solidifies. this rock has large crystals because it cooled slowly under the surface of the earth. Potassium-feldspar, quartz and plagioclase are the minerals that make up granite. gave you bit more background on it here, I hope it helps!
Where are crystals found?
In rocks, mines....practically everywhere. Crystals are found all around the world. One place is in caves where they can be quite large. Geodes contain crystals and there are many types/colors of crystals. One of the most common is quartz that is often white, but there is also smoky quartz, and rose quartz. Many gem stones are a form of crystals.
What type of rock has glass like large crystals?
Intrusive igneous rocks, (Plutonic rocks)
Metamorphic rock that consist of only mineral that forms large interlocking crystals often have what type of texture?
Metamorphic rocks that consist of only one mineral and have large interlocking crystals often have a coarse-grained texture. This means that the individual mineral grains are easily visible to the naked eye. Examples of such rocks include quartzite (formed from quartz) and marble (formed from calcite).
