Pyrites are usually found in solid form
The Mohs hardness of sodium chloride is 2,5.
the mineral that has a hardness of 7 is "Quarts
when ductility increase hardness decrease
Yes, hardness is a specific property of each material.
iron pyrites
Alfred W. G. Wilson has written: 'Pyrites in Canada' -- subject(s): Pyrites 'Currents and shore processes in Lake Ontario' 'Pyrites au Canada' -- subject(s): Pyrites 'Trent River system and Saint Lawrence outlet' -- subject(s): Geology
What is iron pyrites?
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Teamo Supremo - 2002 Pyrites and Pirates was released on: USA: 19 April 2003
Iron pyrites is commonly called "fools gold" since it is often mistaken for gold by people who do not know how to tell the difference.
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Iron pyrites, plumbago.
Also known as "Fool's Gold", it is yellow, shiny, and tends to have crystals with flat surfaces (REAL gold does not shine) The link below is to a photo of iron pyrites.
Iron Pyrites - Iron Sulfide
Pyrites
Pyrites are usually found in solid form