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That varies widely between different types of volcanic rock. Obsidian or volcanic glass, is harder then pumice, but both are volcanic rocks.
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If rock A cuts across rock B what does this indicate about their hardness?
Rock A has a superior hardness to rock B
Volcanic rock a compound or nonmetallic?
Niether. Volcanic rock is a mixture.
What are Frothy volcanic rock are called?
Pumice is a frothy, bubbly, light volcanic rock.
What type of rock is porous volcanic rock?
Common, hihgly porous types of volcanic rock are pumice and scoria.
What is released from a volcanic island?
Magma, (Volcanic Rock)
What is the hardness and luster of tuff?
"Tuff", a rock made up of volcanic ash and other things, is not a mineral, so it has no hardness index or luster.
Is scoria a fine grained rock?
Scoria is a volcanic igneous rock that is composed of approximately 50% silica and 10% calcium oxide and lesser contents of potash and soda. Its hardness on the Mohs scale is 5 - 6.
If rock A cuts across rock B what does this indicate about their hardness?
Rock A has a superior hardness to rock B
Is pumice a volcanic rock?
Yes,it is a volcanic rock.
Can you make fire with volcanic rock?
No. Volcanic rock is not flammable.
What is the hardness of rhyolite?
depends a rock made from lava is an igneous rock.
Why would you find a volcanic rock on a volcanic island?
Volcanic islands are formed by volcanoes and are therefore composed of volcanic rock.
What is the hardness of andesite rock?
Andesite is classified as an extrusive rock and the name of this rock is South American in origin. However, the hardness of this rock is not listed.
Volcanic rock a compound or nonmetallic?
Niether. Volcanic rock is a mixture.
What is the hardness of serpentine rock?
The Hardness of serpentine is 3-4.
What is the hardness of andesite?
Andesite is classified as an extrusive rock and the name of this rock is South American in origin. However, the hardness of this rock is not listed.
What is a rock that starts with a k?
Kimberlite is a volcanic rock. Kenyte is a volcanic rock found on Mount Kenya.
