Although technically it's not a mineral (but rather a glassy form of rhyolite containing predominantly orthoclase, quartz, and mica), obsidian would fall into the 5 - 5.5 range on the Mohs scale of hardness.
Andesite is classified as an extrusive rock and the name of this rock is South American in origin. However, the hardness of this rock is not listed.
Rubbing a rock against porcelain can test the hardness of the rock. If the rock leaves a scratch on the porcelain, it indicates that the rock has a higher hardness level than the porcelain. This can help in identifying the relative hardness of the rock based on the Mohs scale.
Serpentine rock has a wide range of hardness depending on its composition, but it typically falls between 2.5 and 4 on the Mohs hardness scale.
If rock A cuts across rock B, it indicates that rock A is harder than rock B. Harder rocks are able to cut across softer rocks, indicating the relative hardness of the two rock types.
Actually yes, testing a hardness of a rock can be done at another rock to see if it is harder than another rock. You scratch another rock to measure, or you can use a thing designed like a pen with a number (moh's hardness scale) of the rock for it.
The scratch test is used to determine a rock's hardness on the Mohs scale, which ranges from 1 (softest) to 10 (hardest). By scratching a rock with a known mineral or material of a specific hardness, you can compare the scratch to known hardness values to classify the rock. This test helps in identifying the rock's mineral composition and potential uses based on its hardness.
depends a rock made from lava is an igneous rock.
No colour is an aesthetic property, hardness is a physical one
where is rock salt on the moths hardness scale
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Andesite rock typically has a hardness of around 7 on the Mohs scale, which means it is relatively hard and durable. It is commonly used in construction and landscaping due to its strength and resistance to wear and erosion.