Mineral Identification Vocabulary. Appearance what a mineral looks like (color, shape, size) NOT A VERY RELIABLE TEST.

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Mineral Identification Vocabulary

Appearance what a mineral looks like (color, shape, size) NOT A VERY RELIABLE TEST

Hardness a measure of how easily a mineral scratches

Mohs Scale of Hardness a scale comparing the hardness of 10 common minerals. Has values of 1-10

Luster the way a mineral reflects light

Metallic shines like metal

Non-metallic Non-metallic luster contains 5 different lusters. They are: 1.Vitreous 2.Resinous 3.Pearly 4.Greasy 5.Adamantine

Vitreous appears to shine like glass

Resinous appears to be covered in resin (plastic)

Pearly having the iridescent appearance of a pearl

Greasy looks like it is covered in thin grease

Adamantine having the brilliant shine like a diamond

Streak The color of a mineral in powder form. The streak test is done on a streak plate. The mineral must be softer than the streak plate to leave a streak

Cleavage a break along a smooth flat surface

Fracture a break with an uneven, rough, or jagged surface

Other Properties interesting aspects of a mineral that no other mineral has