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Are the minerals which appear in metamorphic rocks largely the same as those in igneous rocks?
The minerals which appear are quite similar chemically but not physically. In metamorphic rocks, foliation can be seen-bands of rocks formed by great pressure, whereas in igneous rocks, this is never present because igneous rocks specifically need to have just previously melted, so therefore, these bands are disorganized and lost. Therefore, igneous rocks clearly don't seem to have any patterns unlike metamorphic rocks. Also, some minerals only form during metamorphism/melting+cooling. Therefore, the chemical composition is usually slightly different. E.g. Garnet is only formed under high-grade metamorphism-high temperatures and pressures. Also, the crystals sizes in igneous rocks depend on how long the rock has had to cool. So therefore, an igneous rock's crystals could be a lot bigger or smaller than a metamorphic rock's crystals. But then again, both rocks have interlocking crystals unlike sedimentary rocks, so in that way, at first glance, they can sometimes look very similar, (depending if it is intrusive of extrusive-metamorphic rocks will look a lot more like intrusive igneous rocks because of how the air affects the magma, (how magma looks when it cools), extrusive rocks look different, (blacker, smaller crystals etcetera).
How do igneous rocks that form from cooling lava differ from igneous rocks that form from cooling magma?
The difference between the two lies in the mineral crystal size. Rocks that form from lava on the surface will cool quickly, with little time for crystal formation. Rocks that form from magma below the surface will cool slowly, resulting in larger mineral crystals. Chemically, they could be identical.
How did igneous rocks get their names?
Igneous rocks got their name from the Latin word "ignis," which means fire. This is because igneous rocks are formed through the solidification of molten magma or lava. The name reflects the fiery origin of these rocks.
Why aren't igneous rocks a good place to look for fossils?
You rarely find fossils in igneous rock for one reason. Igneous rocks are formed from the cooling and solidification of magma or lava. Most living material is destroyed by the heat leaving no recognizable fossil.
What is the difference between basalt granite and obsidian rocks?
i think obsidian is a supercooled liquid of a magma.Its look like a glassy matter because is crystallised very faster than basalt and granite. Granite cools very slowly that's why it shows coarser grains and it crystallizes at very depth whereas basalt crystallizes at surface that's why it shows medium grain size.
What Evidence Would You Look For If Attempting To Classify A Piece of igneous Rock as Extrusive?
Extrusive igneous rocks have very small crystal grains.
What do extrusive rocks look like?
it look like a magam
Why do extrusive rocks look like shiny black glass?
they dont
How does Igneous rocks look like?
beans and a sausage
What are the two different types of igneaous rock how do they look different?
The two main types of igneous rock are intrusive and extrusive. Intrusive rocks form underground and have larger crystals due to slower cooling. Extrusive rocks form on the Earth's surface and have smaller crystals due to rapid cooling.
What do a entrusive ingneous look like?
I think it is "extrusive Igneous rock". Well, the magma,the hot liquid earth material which flows out through a vent(ways or cracks in the earth's crust), if on coming over to the surface of the earth, cools or solidifies, it is called "extrusive rock". If the magma, cools before coming over to the surface of the earth it is called "intrusive rock". the rocks formed this way are generally Igneous rocks. More detailed answer may follow.
Igneous rocks can look very different depending on?
Igneous rocks look different depending on how fast the magma cools.
How do igneous rocks can become sedimentary metamorphic and igneous rocks?
Igneous rocks can transform into sedimentary rocks through weathering and erosion, which breaks down the igneous rock into sediments that are then compacted and cemented together. Igneous rocks can also undergo metamorphism due to heat and pressure, resulting in the formation of metamorphic rocks. Igneous rocks can also melt and be recrystallized to form new igneous rocks through cooling and solidification.
How is Intrusive igneous rock different from extrusive igneous rock?
The main characteristic to look for is mineral crystal size. Extrusive rock will exhibit an aphanitic texture, where individual crystals are not visible without magnification. Intrusive rock will exhibit phaneritic texture, where individual crystals are visible without magnification.
Are the minerals which appear in metamorphic rocks largely the same as those in igneous rocks?
The minerals which appear are quite similar chemically but not physically. In metamorphic rocks, foliation can be seen-bands of rocks formed by great pressure, whereas in igneous rocks, this is never present because igneous rocks specifically need to have just previously melted, so therefore, these bands are disorganized and lost. Therefore, igneous rocks clearly don't seem to have any patterns unlike metamorphic rocks. Also, some minerals only form during metamorphism/melting+cooling. Therefore, the chemical composition is usually slightly different. E.g. Garnet is only formed under high-grade metamorphism-high temperatures and pressures. Also, the crystals sizes in igneous rocks depend on how long the rock has had to cool. So therefore, an igneous rock's crystals could be a lot bigger or smaller than a metamorphic rock's crystals. But then again, both rocks have interlocking crystals unlike sedimentary rocks, so in that way, at first glance, they can sometimes look very similar, (depending if it is intrusive of extrusive-metamorphic rocks will look a lot more like intrusive igneous rocks because of how the air affects the magma, (how magma looks when it cools), extrusive rocks look different, (blacker, smaller crystals etcetera).
How do igneous rocks that form from cooling lava differ from igneous rocks that form from cooling magma?
The difference between the two lies in the mineral crystal size. Rocks that form from lava on the surface will cool quickly, with little time for crystal formation. Rocks that form from magma below the surface will cool slowly, resulting in larger mineral crystals. Chemically, they could be identical.
Why don't igneous rocks look like magma rocks if igneous rock is formed from magma?
Because that is the very definition of igneous rock.
