Moh's Hardness Scale

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What is Moh's Hardness Scale?

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A scale that ranks minerals based on their ability to scratch one another, ranging from 1 (talc) to 10 (diamond).

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What does it mean if a mineral can scratch another mineral?

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It means the first mineral is harder than the second mineral according to Moh's Hardness Scale.

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What is the hardness of talc on Moh's Hardness Scale?

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1, which is the softest mineral.

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What mineral has a hardness of 10 on Moh's Hardness Scale?

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Diamond, which is the hardest known natural material.

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If a mineral can scratch fluorite, what can we infer about its hardness?

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It is harder than fluorite, which has a hardness of 4.

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Which mineral cannot be scratched by orthoclase?

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Topaz, which has a hardness of 8.

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What is the hardness of gypsum on Moh's Hardness Scale?

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2, which is relatively soft.

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If a mineral can be scratched by fluorite, what can we infer about its hardness?

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It is softer than fluorite.

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What is the hardness of feldspar on Moh's Hardness Scale?

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6, which is harder than gypsum but softer than quartz.

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What does it mean if a mineral is harder than gypsum but can be scratched by fluorite?

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It means the mineral has a hardness greater than 2 but less than 4.