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Earth & Space ScienceGrade 6-8

Mineral Identification Answer Key

Identify minerals using physical properties like hardness, luster, and streak.

Looking for Mineral Identification answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Mineral Identification Gizmo.

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Mineral Properties

Q1.What is a mineral?

Answer

A naturally occurring, inorganic solid with a definite chemical composition and crystal structure.

Q2.What's hardness?

Answer

A mineral's resistance to scratching, measured on the Mohs scale (1-10, with diamond at 10).

Q3.What's luster?

Answer

How a mineral reflects light - metallic (shiny like metal) or non-metallic (glassy, pearly, dull, etc.).

Testing Minerals

Q4.What's streak?

Q5.What's cleavage?

Q6.What's fracture?

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