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Is gneiss smooth and shiny?
Gneiss is a foliated metamorphic rock, displaying bands of light and dark minerals.
If a rock has shiny surfaces or bands of light and dark layers then it is?
The bands of light and dark are classic signs of Gneiss (Gneissose banding), but Gneiss is not necessarily shiny. It may be sparkly, but not shiny. However, a Slate IS shiny, but does not have the pretty banding. Another consideration is Schist, which has similar characteristics to Gneiss. My advise is that if you are classifying a rock that you are looking at, consider the grade of metamorphism, as it certainly is metamorphic. Also consider the mineralogy: what are the light and dark bands? Quartz, Feldspar (light)? Mica (biotite) (dark)? There are many possibilities. The mineralogy will help determine the original sedimentary rock, which you can then use to determine the metamorphic sample you have.
Is metamorphic rock made of sedimentary rock and igneous rock?
No, metamorphic rock is rock that has been modified by heat and pressure (without melting). Usually it is sedimentary rock that is modified into metamorphic rock. The main modification is usually removal of moisture and other volatiles. Rarely an igneous rock might be modified, but as they are usually very low in moisture and other volatiles the modifications are typically only minor.
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.
What type of rock layer are tertiary fossils usually found in?
metamorphic
Is gneiss smooth and shiny?
Gneiss is a foliated metamorphic rock, displaying bands of light and dark minerals.
If a rock has shiny surfaces or bands of light and dark layers then it is?
The bands of light and dark are classic signs of Gneiss (Gneissose banding), but Gneiss is not necessarily shiny. It may be sparkly, but not shiny. However, a Slate IS shiny, but does not have the pretty banding. Another consideration is Schist, which has similar characteristics to Gneiss. My advise is that if you are classifying a rock that you are looking at, consider the grade of metamorphism, as it certainly is metamorphic. Also consider the mineralogy: what are the light and dark bands? Quartz, Feldspar (light)? Mica (biotite) (dark)? There are many possibilities. The mineralogy will help determine the original sedimentary rock, which you can then use to determine the metamorphic sample you have.
Is silver is gold like mould when taken out from the earth?
No it is not like mold, however when it comes out from the earth it is just a rock not sparkly or shiny.
How does a metamorphic rock get turned into a sedimentary rock?
Usually through the weathering and erosion of the metamorphic rock. The rock particles from the metamorphic rock are transported to a place of deposition where they can be cemented together by a process called lithification, forming a sedimentary rock.
Is basalt a metamorphic rock?
Basalt is not a metamorphic rock but an igneous rock, usually dark-colored. It is the most common type of volcanic rock on Earth.
Is obsidian rock metamorphic rock sedimentary or igneous?
Obsidian is an extrusive igneous rock, formed from rapidly cooling lava.
Is metamorphic rock made of sedimentary rock and igneous rock?
No, metamorphic rock is rock that has been modified by heat and pressure (without melting). Usually it is sedimentary rock that is modified into metamorphic rock. The main modification is usually removal of moisture and other volatiles. Rarely an igneous rock might be modified, but as they are usually very low in moisture and other volatiles the modifications are typically only minor.
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.
What needs to be applied to igneous or sedimentary rocks to form metamorphic rocks?
Metamorphic rock is usually formed from the application of heat and/or pressure to existing rock.
A metamorphic rock is from where?
Metamorphic rock usually forms when a rock is altered under heat and pressure without melting. Some rocks may be metamorphosed by contact with hot water,
What kind of rock is formed with heat and pressure?
Metamorphic rocks, like slate or quartizite, or even diamonds.
What metamorphic rock does granite crystallize?
Granite usually metamorphoses into gneiss.
