There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash).
There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble).
Thus "hardness" is not a characteristic that can be used to distinguish between the two.
the hardness of a mineral indicates how well it resists scratching or abrasion. it is measured on a numerical scale from 1 (softest) to 10 (hardest):
1 talc
2 gypsum
3 calcite
4 fluorite
5 apatite
6 orthoclase feldspar
7 quartz
8 topaz
9 corundum
10 diamond
Schist is a type of medium grade metamorphic rock, which is formed by the metamorphosis of mudstone or shale. Its hardness on the Mohs scale is 1.0.
why do you need to know
it is a metamorphic rock
Metamorphic rock can not become igneous rock, however igneous rock can become metamorphic. This process happens over time as the rocks are shifted, compressed and heated by the Earth.
Metamorphic
Metamorphic rock continues to heat and eventually melts and becomes igneous rocks.
igneous
Metamorphic rock becomes igneous rock when it is melted, then solidifies.
A metamorphic rock can become a igneous rock by melting and cooling
Weathering and erosion turn igneous rock to metamorphic rock.
Any metamorphic rock can melt and recrystallize and become an igneous rock.
The metamorphic rock melts into magma then cools into igneous rock
when sedimentary rocks get exposed to great heat and pressure, they become more consolidated (harder to weather). when igneous rock combines with sediments and the two are heated under pressure, they become one rock, a metamorphic rock
No, metamorphic can be formed by either igneous or sedimetary rock.
An igneous rock can be metamorphosed (changed) into a metamorphic rock but will no longer be an igneous rock. An igneous body can be intruded into metamorphic rocks but will still be an igneous rock that is different from the surrounding metamorphic rocks. Ethier answer work depending on how the question is read.
Yes. A metamorphic rock can melt and the re-solidify as an igneous rock.
if the igneous rock is put under heat and pressure it turns into a metamorphic
Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.
It is a Metamorphic rock