Properties of minerals

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What are nonmetallic minerals?

Back

Nonmetallic minerals are minerals that do not reflect light and have a dull appearance.

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What is hardness in minerals?

Back

Hardness is a measure of how easily a mineral can be scratched or how easily it can scratch other materials.

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What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along smooth, flat surfaces.

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What properties are used to identify minerals?

Back

The properties used to identify minerals include luster, streak, and hardness.

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What is a crystal?

Back

A crystal is a solid that has its atoms arranged in a regular, repeating pattern.

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What is luster in minerals?

Back

Luster refers to the way light reflects off the surface of a mineral, indicating its shine.

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What is streak in mineral identification?

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Streak is the color of the powder left when a mineral is scraped across a hard surface.

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What is the difference between metallic and nonmetallic minerals?

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Metallic minerals reflect light and have a shiny appearance, while nonmetallic minerals do not reflect light and appear dull.

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How can you test the hardness of a mineral?

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You can test the hardness of a mineral by scratching it with a material of known hardness.

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What does it mean if a mineral has a high hardness rating?

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A high hardness rating means the mineral is resistant to scratching and is harder than many other materials.