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What is gniess luster?
The luster of gneiss is typically described as shiny, reflective, and sometimes sparkly due to its mineral composition. Gneiss is a type of metamorphic rock formed from the alteration of existing rock under high heat and pressure, resulting in its distinct luster.
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 gneiss smooth and shiny?
Gneiss is a coarse-grained metamorphic rock that can have a range of textures and appearances. While some gneisses can have a shiny appearance due to the presence of minerals like mica, they are generally not smooth like polished stones but rather have a rough or bumpy texture due to their mineral composition and formation process.
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.
Can metamorphic rock form out of other metamorphic rock?
No.
What is gniess luster?
The luster of gneiss is typically described as shiny, reflective, and sometimes sparkly due to its mineral composition. Gneiss is a type of metamorphic rock formed from the alteration of existing rock under high heat and pressure, resulting in its distinct luster.
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.
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 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.
Is obsidian rock metamorphic rock sedimentary or igneous?
Obsidian is an extrusive igneous rock, formed from rapidly cooling lava.
Is gneiss smooth and shiny?
Gneiss is a coarse-grained metamorphic rock that can have a range of textures and appearances. While some gneisses can have a shiny appearance due to the presence of minerals like mica, they are generally not smooth like polished stones but rather have a rough or bumpy texture due to their mineral composition and formation process.
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.
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,
Is basalt a metamorphic rock?
No, basalt is not a metamorphic rock. Basalt is an igneous rock that forms from cooling and solidification of lava. Metamorphic rocks are formed from the alteration of existing rocks due to high pressure, heat, or fluids.
What metamorphic rock does granite crystallize?
Granite usually metamorphoses into gneiss.
What type of rock is slate?
A metamorphic rock.
