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Unformatted text preview: fingernail: copper (pre-1983) penny: (3) Which is more useful for identifying a mineral color or streak? (circle one) (4) The most common family of minerals that make up the crust of the Earth are the (circle one): carbonates / sulfates / silicates / phosphates (5) Practice using the ID charts on pages 18-21 to identify the 2 minerals described below. (a) Mineral name: _________________ Description: Metallic luster, black streak, softer than a fingernail, greasy feel, no obvious cleavage planes (b) Mineral name: _________________ Description: Nonmetallic (vitreous) luster, dark red color, harder than glass, no cleavage planes...
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This note was uploaded on 01/11/2012 for the course GEO 101 taught by Professor Robviens during the Spring '09 term at Bellevue College.
- Spring '09