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Why do some minerals only occur in metamorphic rocks?

As the degree of hydration decreases in a rock undergoing metamorphosis, certain minerals cannot exist. New minerals then form that do not require water for their formation. This environment of heat, pressure, and lack of water is necessary for the formation of certain minerals.


What is a sentence for metamorphic rock?

Metamophic rock came from the volcano and it's part of rocks and minerals.


How are the sedimentary rock the metamorphic rock and the igneous rock the same?

They all contain minerals.


What is a common structure of metamorphic rock?

The common structure of a metamorphic rock is that there are several pieces of different types of minerals, sand, rock, or glass.


The metamorphic rock texture that has alternating bands of light and dark minerals is?

The metamorphic rock texture that has alternating bands of light and dark minerals is called foliation. This texture results from the alignment of minerals due to directional pressure during metamorphism. Schist is a common type of foliated metamorphic rock.


When metamorphic rock has banded texture with minerals grains that are arranged in layers it is called?

Metamorphic rocks with a layered or banded look are referred to as foliated.


What is a metamorphic rock showing minerals formed into bands?

Gneiss.


What crystalline structure would a metamorphic rock have?

they have rocks and minerals


Index minerals allow a scientist 2 understand the history of metamorphic rock?

Yes! since index minerals form at specific pressure and temperature conditions hence when they are encountered or observed in a certain metamorphic rock they serve to indicate the condition by which the rock formed.They can tell whether it is a high grade or low grade metamorphism.e.g Andalusite mineral indicate high grade metamorphism associated with high temperature.


Explain why some minerals only occur in metamorphic rock?

When the rock was forming other minerals that were near the forming place of the metamorphic rock were mixed in after the pressure has been made on the metamorphic rock. I am a seventh grade teacher so I know the answer. We are going over this in class right now.


What rock forms by pressure on large masses of rock?

Metamorphic rock forms by the pressure on large masses of rock, causing the existing minerals in the rock to recrystallize without melting, resulting in new minerals and textures. Examples of metamorphic rocks include marble, slate, and schist.


What b do minerals sometimes form in metamorphic rock?

Minerals in metamorphic rocks can form due to changes in temperature and pressure, which cause existing minerals to recrystallize or new minerals to grow. The specific minerals formed depend on the original composition of the rock and the conditions under which the metamorphic process occurred.