Where does this come from, and can I check it?

A 1 to 10 ordinal ranking evaluates mineral hardness based on scratch capability. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Mohs scale rates mineral scratch resistance from talc to diamond

A 1 to 10 ordinal ranking evaluates mineral hardness based on scratch capability

Friedrich Mohs created the Mohs hardness scale in 1812 to rank mineral scratch resistance relative to ten benchmark minerals. Soft talc anchors the bottom of the scale at hardness 1, while diamond sits at the apex with a hardness rating of 10. A mineral can scratch any material lower on the scale but cannot scratch anything rated higher.

Where this comes from

USGS

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Tags: earth science, minerals, mohs scale

Mohs scale rates mineral scratch resistance from talc to diamond: the short answers

Where does this come from, and can I check it?: A 1 to 10 ordinal ranking evaluates mineral hardness based on scratch capability. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a science fact?: Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.