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What is Mica Schist and Phyllites Protolith?
Mica schist is a metamorphic rock composed predominantly of mica minerals, typically biotite and muscovite, that exhibit a foliated texture. Phyllites are also metamorphic rocks with a fine-grained texture that is typically more dense and compact than schists. The protolith of both mica schist and phyllites is usually shale, mudstone, or other fine-grained sedimentary rocks that undergo metamorphism under heat and pressure.
Is calcite metamorphic sedimentary or igneous?
Calcite is a mineral commonly found in sedimentary rocks. It can also be found in some metamorphic rocks, as it can recrystallize under heat and pressure. It is unlikely to be found in igneous rocks except in trace amounts.
What rocks contain mica?
I'm not sure of the specifics, but metamorphic rocks usually have it. Yo face
Which type of rock is quartz?
Quartz is a silicate mineral (SiO2). igneous A+
Which mineral is responsible for the strong foliation in a schist?
The mineral responsible for the strong foliation in schist is usually mica (such as biotite or muscovite). These minerals have a planar structure that aligns during the metamorphic process, creating the foliation planes in the rock.
What is the protolith for greenstone?
The protolith for greenstone is usually basaltic or andesitic volcanic rock that has undergone metamorphism, resulting in the formation of chlorite, epidote, and actinolite minerals that give greenstone its characteristic green color. These rocks are typically found in greenschist facies metamorphic environments.
Is a diamond metamorhic?
Metamorphic is a term usually applied to rocks. Diamond is a mineral.
How does an igneous rock change to metamorphic?
Meta-igneous. Metamorphism of igneous rocks can form a wide range of metamorphic rocks, depending on the mineralogy of the igneous protolith and the P-T conditions of the metamorphism.
What mineral is usually dark red and found in many New York State metamorphic rocks?
The mineral typically found in many New York State metamorphic rocks that is usually dark red is garnet. Garnet often occurs in various metamorphic environments and is known for its hardness and distinct crystal structure. Its deep red color is attributed to its iron and aluminum content, making it a common indicator mineral in regional metamorphic rocks.
What is Mica Schist and Phyllites Protolith?
Mica schist is a metamorphic rock composed predominantly of mica minerals, typically biotite and muscovite, that exhibit a foliated texture. Phyllites are also metamorphic rocks with a fine-grained texture that is typically more dense and compact than schists. The protolith of both mica schist and phyllites is usually shale, mudstone, or other fine-grained sedimentary rocks that undergo metamorphism under heat and pressure.
Where are crystalline minerals found?
In all three rock types: igneous, sedimentary, and metamorphic. By definition, a mineral has a crystalline structure, and rocks are composed of combinations of minerals. Rocks with interlocking crystalline mineral structures are usually igneous or metamorphic.
Is pyrite an element?
Pyrite is actually a mineral. It is often found within metamorphic and sedimentary rocks though.
How does a metamorphic rock turn into another type of metamorphic rock?
From increased pressure and/or heat. Fluid removal results in hydrous mineral destruction and non-hydrous mineral creation, resulting in rock of a different mineralogy. A metamorphic rock can be further metamorphosed by additional heat and/or pressure into a rock with a higher degree of metamorphism. An example of this would be the metamorphic rock slate changing into the metamorphic rock phyllite.
Why is it rare to fine fossils in metamorphic rocks?
Fossils abound in sedimentary rock, you are in fact very likely to find them there.
What is the protolith of soapstone?
The protolith of soapstone is usually ultramafic rocks such as serpentinite or peridotite. These rocks undergo metamorphism due to high heat and pressure, resulting in the formation of soapstone.
Is calcite metamorphic sedimentary or igneous?
Calcite is a mineral commonly found in sedimentary rocks. It can also be found in some metamorphic rocks, as it can recrystallize under heat and pressure. It is unlikely to be found in igneous rocks except in trace amounts.
What rocks contain mica?
I'm not sure of the specifics, but metamorphic rocks usually have it. Yo face
