Identifying Minerals Each mineral has its own specific properties that can be used to identify it, this is due to the fact that each mineral has its own.

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Presentation transcript:

Identifying Minerals Each mineral has its own specific properties that can be used to identify it, this is due to the fact that each mineral has its own unique make-up. Hardness- Mohs Hardness Scale Streak Luster

Identifying Minerals Each mineral has its own specific properties that can be used to identify it.

Hardness- Mohs Hardness Scale Hardness (how hard a mineral is) is one of the best properties that can be used to help identify a mineral Mohs Hardness Scale ranks 10 minerals from softest to hardest, Talc is softest and Diamond is hardest

Hardness- Mohs Hardness Scale Our textbook lists Feldspar for 6 http://www.realgems.org/pic/mohs%20en.jpg

Streak Streak tells the color of a mineral’s powder. To find the streak of a mineral you rub the mineral against an unglazed tile called a streak plate.

Streak

Streak Is this Gold? How do you know?

Luster Luster describes how a mineral reflects light from its surface. Such as: Description Examples Glassy Quartz Silky Gypsum Greasy Talc, some Quartz Metallic Gold, Pyrite, Galena etc Earthy Kaolin Waxy some Serpentine Pearly Gypsum, some Talc Resinous Amber Brilliant Diamond Dull Graphite