Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.
== == 5.5 is the hardness of bituminous!!!
Anthracite coal is harder than bituminous coal. Anthracite coal has a relative hardness of 1.3 to 1.4. Bituminous coal has a hardness of less than one.
2.2
what would you use the mohns scale of hardness for
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.
== == 5.5 is the hardness of bituminous!!!
Anthracite coal is harder than bituminous coal. Anthracite coal has a relative hardness of 1.3 to 1.4. Bituminous coal has a hardness of less than one.
2.2
2.2
what would you use the mohns scale of hardness for
2-2.5
YES, there is a relation between HGI and coal quality. HGI is the parameter to indicate the hardness or grindability of the coal when it is used in pulverized coal for boiler
No. The Mohs scale only lists minerals. Coal is a sedimentary or metamorphic rock, depending on the variety.
Due to physical property of hardness and usability of this natural resource
I dont know ive benn lookin for this answer so someone help me out
> Color > Hardness > Melting Point > Flammability to name a few ...