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Scoria, is a poor-quality glassy substance formed in volcanoes. It commonly has many gas vesicles in it, and is usually red to black in colour. Unlike its cousin Pumice, scoria has a density greater than 1, hence it will sink in water.
As to melting point, like most complex mixtures it does not have a simple melting point, rather a softening point, and this will be in the high hundreds of deg C.
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What is the hardness of Limonite on the mohs hardness scale?
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
What is a sentence with the word hardness?
no one likes your Hardness! hardness is not a good character.
Is hardness property of elements?
Pure materials, especially minerals, are measured on a hardness scale. There are three basic tests: indentation hardness, scratch hardness and rebound hardness. See Wikipedia
What is the hardness of uranite on the Mohs hardness scale?
Uranite is not correct, if you mean URANINITE, it is ranges 5-6 hardness.
What is the hardness of cinder?
I really don't know what the hardness of Cinder is but by testing it I think it has a hardness of 4
When was Scorias spongiosa created?
Scorias spongiosa was created in 1822.
What is the hardness of Limonite on the mohs hardness scale?
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
What is the hardness of Flint according to the mohs scale of hardness?
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
What is difference between barcol hardness and Shore A hardness?
what is the difference between Shore-A Hardness & Barcol Hardness
What is the hardness of a conundrum?
The hardness of conundrum is 9 on the Moh's hardness scale
What is the hardness of manganese?
Mohs hardness: 6 Brinell hardness: 196 MPa.
What is salts hardness on the hardness scale?
The Mohs hardness of sodium chloride is 2,5.
What is a sentence with the word hardness?
no one likes your Hardness! hardness is not a good character.
What is the hardness of nitrogen gas?
It has no hardness.
What is the hardness of dolomite on the MOHS hardness scale?
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
What is the hardness of azurite on the MOHS hardness scale?
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
What is the approximate hardness of topaz?
the hardness of Topaz is 8 on moes hardness scale
