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It's because of foliation. Foliation is defined as the arrangement of a set of minerals in parallel, sheet-like layers that lie perpendicular to the flattened plane of a rock.
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∙ 12y ago
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What are rocks called with alternating bands of light and dark silicate minerals?
They are probably gneiss, a banded metamorphic rock.
How does a foliated metamorphic rock form?
Metamorphic rocks have their grains arranged in parallel layers or bands that are said to be foliated.
Name two methods by which rocks and minerals are removed from the ground?
metamorphic
What kind of metamorphic rock is formed where rocks have been heated but not deformed?
a rock with metamorphic minerals but no foliation or lineation
What type of rock texture results when extreme pressure causes minerals in metamorphic rock to realign or when minerals separate out into dark and light bands?
I do believe that the answer is "foliated". However I am not positive, but I do know that... Banding is another word for foliation, which is the grouping of certain minerals with the rock forming parallel bands that are perpendicular to the pressure that causes its formation. Banding of different minerals give some metamorphic rocks a striped appearance, involving the segregation of light and dark minerals into layers. Good luck with your question and I hope that this information has helped.
What is metamorphic rocks that have parellel bands of minerals?
It is foliated
Do all foliated metamorphic rocks have bands of minerals?
i believe they do yes.
What kind of metamorphic has its minerals grains arrange in planes or band?
Metamorphic rock with mineral grains arranaged in bands or lamellar planes are called foliated metamorphic rocks.
What are rocks called with alternating bands of light and dark silicate minerals?
They are probably gneiss, a banded metamorphic rock.
Metamorphic rocks in which minerals are NOT aligned within the rock are called?
Metamorphic rocks in which the minerals show no alignment are called non-foliated metamorphic rocks.
Is metamorphic a type of mineral?
Metamorphic is a group of rocks with similar characteristics. There are minerals in the rocks so they could be considered made of minerals but they are not minerals themselves.
Why Some Minerals Only Occur In Metamorphic Rocks.?
because if the metamorphic rocks are big they will shrink
Can metamorphic rocks be formed by solutions of minerals?
No.
Is it true or false that the texture of a sedimentary rock that does not have minerals arranged in bands is described as nonfoliated?
False. The terms folidated and nonfoliated apply to metamorphic rocks.
What is the texture called in metamorphic rocks with bands or layers?
foliated
Why do sedimentary and metamorphic rocks have bands of colors?
they have more crystals
Does metamorphic rock has bands of light and dark color?
yes.those are very common in metarmorphic rocks especially Gneisses.Usually banding is between felsic and mafic minerals.
