Mohs scale.
The Mohs scale is used to determine the relative hardness of minerals.
Moh's scale.
The Mohs Scale
the Mohs hardness scale
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The hardness of a rock is called its "Mohs scale hardness." This scale ranks minerals and rocks based on their scratch resistance, with diamond being the hardest at 10 and talc being the softest at 1.
Flint rocks have a hardness of around 7 on the Mohs scale, which makes them relatively hard and durable. This hardness is due to the presence of silica in the composition of flint rocks. These properties make flint rocks suitable for various uses, including as tools and for sparking fires.
The highest level on the Mohs hardness scale is a level ten. Diamonds are at a level ten and are also intrusive rocks. However Intrusive rocks can be at almost any level of hardness based on the minerals the rock contains.
Orthoclase has a hardness of 6 on the Mohs scale of mineral hardness. It is a common mineral found in granite and other igneous rocks.
Augite has a hardness of around 5 to 6 on the Mohs scale of mineral hardness. It is a common mineral found in igneous rocks and is known for its dark green to black color.
Marble Rocks range from 4 to 5 on the Mohs scale
Rocks are made up of minerals, which can have varying levels of hardness. The only mineral to have a hardness of 10 is diamond.