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What is a very hard rock that burns with a high heat and smoke a metamorphic rock formed from coal?
The rock you are referring to is anthracite coal, which is a type of metamorphic rock formed from coal with a high carbon content. Anthracite coal burns with a high heat and produces little smoke due to its high carbon content and low volatile matter.
Which of the igneous rock types has the lowest silica content?
Basalt has the lowest silica content among the common igneous rock types. It is classified as a mafic rock due to its relatively low silica content and high levels of iron and magnesium.
A light colored igneous rock with silica content and explosive eruptions?
The rock is likely rhyolite, which is a light-colored igneous rock with high silica content. Rhyolitic magma is viscous and tends to trap gas, leading to explosive eruptions with ash and pyroclastic flows. The high silica content of rhyolite contributes to its light color and explosive nature.
What are two examples of felsic rock?
Granite and rhyolite are examples of felsic rocks. These rocks are generally light in color and rich in minerals like quartz, feldspar, and mica. They are formed from the crystallization of magma with high silica content.
Are olivine and pyroxene most likely to be found in felsic rock?
No, olivine and pyroxene are more commonly found in mafic rocks due to their high iron and magnesium content. Felsic rocks, on the other hand, typically contain minerals like quartz, feldspar, and mica, which have lower iron and magnesium content.
Igneous rock with high feldspar content?
Granite
What is the name of a volcanic rock with high silica content?
Rhyolite.
What is a very hard rock that burns with a high heat and smoke a metamorphic rock formed from coal?
The rock you are referring to is anthracite coal, which is a type of metamorphic rock formed from coal with a high carbon content. Anthracite coal burns with a high heat and produces little smoke due to its high carbon content and low volatile matter.
Which of the igneous rock types has the lowest silica content?
Basalt has the lowest silica content among the common igneous rock types. It is classified as a mafic rock due to its relatively low silica content and high levels of iron and magnesium.
Is rhyolite high in silica?
Yes, rhyolite is high in silica. It is a volcanic rock with silica content of around 70% or more. This high silica content contributes to its high viscosity and explosive nature during volcanic eruptions.
A light colored igneous rock with silica content and explosive eruptions?
The rock is likely rhyolite, which is a light-colored igneous rock with high silica content. Rhyolitic magma is viscous and tends to trap gas, leading to explosive eruptions with ash and pyroclastic flows. The high silica content of rhyolite contributes to its light color and explosive nature.
What are two examples of felsic rock?
Granite and rhyolite are examples of felsic rocks. These rocks are generally light in color and rich in minerals like quartz, feldspar, and mica. They are formed from the crystallization of magma with high silica content.
What rock would have the greatest porosity?
Sandstone generally has the greatest porosity among rocks due to its high content of interconnected pores. This is why sandstone is commonly used as an underground reservoir for oil and natural gas.
What is a light colored rock that has high silica?
A light-colored rock that has high silica content is likely to be granite. Granite is a common igneous rock composed mainly of quartz, feldspar, and mica, and is known for its high silica content and light color.
What is acidic rock?
Acidic rock refers to a type of rock that has a high silica content and is rich in minerals like quartz and feldspar. It tends to have a light color and can be found in areas where there has been volcanic activity. These rocks form from the cooling and solidification of magma or lava with high silica content.
Are olivine and pyroxene most likely to be found in felsic rock?
No, olivine and pyroxene are more commonly found in mafic rocks due to their high iron and magnesium content. Felsic rocks, on the other hand, typically contain minerals like quartz, feldspar, and mica, which have lower iron and magnesium content.
When silica is in a rock does it make it lighter or darker?
Silica typically makes a rock lighter in color because it is a light-colored mineral. Rocks high in silica content often appear white or light gray.
