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Metallic Luster

Name _______________________. 3 perfect cleavages 90 o, silver gray, H 2.5, density D 7.6. Black, gray, or greenish black streak. Magnetic, black to dark gray H 6, D 5.2. Steel gray, soft marks paper, H 1, D 2. Golden Yellow tarnish purple, H 4 D 4.3. Metallic Luster.

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Metallic Luster

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  1. Name _______________________ 3 perfect cleavages 90o, silver gray, H 2.5, density D 7.6 Black, gray, or greenish black streak Magnetic, black to dark gray H 6, D 5.2 Steel gray, soft marks paper, H 1, D 2 Golden Yellow tarnish purple, H 4 D 4.3 Metallic Luster Brass Yellow masses or cubic crystals, striated facets on crystals common H 6 D 5, “fools gold”, NO ACID Brown to reddish-brown streak Steel gray, red to red brown streak, H 5 – 6 D 5, uneven fracture Yellow-brown streak Yellow brown or black, H 5 - 5.5, D 3.5 - 4

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