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Gneiss isa common metamorphic rock that has undergone intense folding and crumpling over a period of, in some cases, hundreds of millions of years. The layered banding that is visible in many gneiss specimens is a result of layers of mafic and selfic minerals. Mafic mineralscontain heavierelements like iron, nickel, or cobalt.Felsic minerals are lighter, and are often silicates containing silicon, aluminum, and oxygen.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoAugen gneiss is not a pure substance but a mixture of rocks. Its chemical composition will change depending on where it comes from. It is an igneous rock that is a mixture of others.
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When the chemical composition of rock changes what has occurred?
Chemical change not a physical. A CHEMICAL CHANGE
The chemical composition of soil depends to a large extent on what?
the characteristics of soil depend mainly on the rock from which the soil was weathered, which is called the soil's parent rock
What is chemical composition of kf reagent?
What is the chemical composition of kf reagent
What minerals are found in hair spray?
basalt, salt rock, Quartz, and gneiss
What is chemical composition of phosphorus?
Phosphorus is one of the chemical elements and therefore has no "chemical composition" in the usual sense.
What is weather resistant metamorphic rock?
Metamorphic rock that resists chemical and mechanical weathering, for example, the rock gneiss.
What are the properties of gneiss?
gneiss has many properties depending on the type of gneiss it is but some common properties are fine or coarse grains, metamorphic "bands" on the rock, and it's composition which is feldspar,quartz, mica, and hornblende.
What is weathering that does not alter the chemical composition of the rock called?
The type of weathering that does not alter the chemical composition of the rock is called physical weathering. The acid weathering usually alter the chemical composition of a rock.
What is gneiss and schist?
Both are foliated metamorphic rocks in which individual minerals can be seen with the naked eye. The difference is that gneiss is generally more coarsely crystalline and has color banding and schist smells bad.
What is sandblasting of rock by changing its chemical composition?
No. The chemical composition remains the same.
Is an gneiss rock sedimentary rock?
No, gneiss is metamorphic.
Is gneiss an example of igneous rock?
No. Gneiss is a metamorphic rock.
What is the parent rock of the metamorphic rock biotite gneiss?
Biotite gneiss could have a number of protoliths (parent rocks), and those protoliths could be igneous or sedimentary; the sedimentary parent rock could be a fine-grained shale, high in biotite composition, or a granitic rock, high in biotite.
What type of rock is an example of Gneiss?
Gneiss is an example of a metamorphic rock.
What group is gneiss in?
A Gneiss is a Metamorphic rock
What rock does gneiss come from?
Gneiss may come from either granite or schist.
What changes a rock's composition?
Chemical Changes
