What is the Mohs hardness for Feldspar?

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Multiple Choice

What is the Mohs hardness for Feldspar?

On the Mohs hardness scale, scratch resistance determines how hard a mineral is. Feldspar has a hardness of six, placing it above glass (about 5.5) and calcite, but below quartz (7). This means feldspar can scratch materials softer than six, like glass, and can be scratched by harder minerals such as quartz. That’s why six is the correct value for feldspar’s hardness.

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