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Mineral Identification

Mineral Identification. Mr. Jensen Ref: McGuire – ES/PS. Minerals can be identified using their distinctive physical and chemical properties. . Mineral properties include: _______________ _______________ _______________ _______________ _______________ _______________ _______________.

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Mineral Identification

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  1. Mineral Identification Mr. Jensen Ref: McGuire – ES/PS

  2. Minerals can be identified using their distinctive physical and chemical properties. Mineral properties include: _______________ _______________ _______________ _______________ _______________ _______________ _______________ Identifying Minerals

  3. Table 2-1: Common Rock Forming Minerals

  4. Minerals: Color • Color • Many minerals have a characteristic color • _______________ may discolor certain light colored minerals • Ex. Quartz and calcite which are typically colorless. • Dark color minerals typically do not have this problem.

  5. Minerals: Luster • Luster • Describes the way light is ____________ from the freshly cut surface of a mineral. • _______________ Luster • Hard shiny look like polished metal. • Light is unable to penetrate. • Ex. Pyrite, galena and magnetite • _______________ Luster • May be shiny but some light is able to penetrate. • Includes glassy, waxy, pearly and earthy (dull) lusters • Ex. Calcite, quartz and feldspar

  6. Minerals: Streak • Streak • The color of the mineral in a _______________ form. • The test for streak is performed by rubbing a fresh corner of the mineral across a white, unglazed __________ __________. • Several minerals have a streak that is not the same color as the mineral itself. • Most metallic luster minerals have a dark colored streak. (Ex. Graphite, Pyrite)

  7. Minerals: Crystal Structure • Crystal Structure • Minerals form characteristically ____________ crystals • A crystal is a regularly shaped solid formed by an __________ __________ of atoms.

  8. Minerals: Hardness • Hardness • Minerals differ in hardness • Tested by _______________ mineral with other materials of known hardness • Friedrich _______ (Geologist) created the _______ scale for hardness

  9. Minerals: Cleavage • Cleavage • If a mineral breaks readily along ______ _________ it shows cleavage • Many minerals break along ______ _________ called cleavage planes • Minerals that break along even surfaces that do not follow atomic arrangement (crystal faces) are said to show ______________

  10. Minerals: Density • Density • Minerals vary in density and __________ __________ (ratio of density and water)

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