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Mineral Identification (Special properties (magnetic, fluorescent under UV…
Mineral Identification
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Streak
A minerals colour when powdered called its streak, seen by scraping the mineral on the unglazed back of a white tile
Lustre
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most common are:
metallic
glassy
earthly
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Cleavage
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May minerals have specific lines of weakness owning to their crystal structure and so will break in particular way, such as the flat sheets seen in Mica
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