Introduction to Rocks and Minerals Lab

Laboratory Manual in Physical Geology (8th Edition)

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Introduction to Rocks and Minerals Lab Name Objective: This lab is designed to get you introduced to common physical properties of minerals. Please answer the following questions. Note: Reading the introduction material from Lab Three (page 47of Lab Manual) will be useful. 1) What is the streak color for sample # 21? Red-brown 2) Observe what happens when you put one drop of Hydrochloric Acid on samples # 2, 3, 4, 5, 9, and 10. Which ones effervesce or fizz? Note: Wear safety glasses and do not get acid on your skin. Rinse acid off of minerals with water and wash your hands after experiment. Samples #3 and #10 were the only ones to effervesce. 3) Use your fingernail and try to scratch samples # 1, 2, 3, 4, 8, and 9. Which samples will your fingernail scratch? 1, 2, and 8 4) What valuable metal could you confuse sample # 19 with?
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Unformatted text preview: Gold 5) Does sample # 7 show mineral cleavage or fracture? Cleavage 6) Sample # 18 is commonly used for what? Pencil lead 7) What is the streak color for sample # 6? Unknown, sample is harder than streak plate. 8) Can sample # 4 be scratch by # 7? Yes 9) Can sample # 2 scratch # 6? Yes 10) Does sample # 6 show mineral cleavage or fracture? Cleavage 11) Does sample # 4 show mineral cleavage or fracture? Fracture 12) Does sample # 18 show mineral cleavage or fracture? Fracture 13) What is the hardness of samples # 2, 3, 6, and 7? #2: 2, #3: 3, #6: 6, #7: 7 14) What is the streak color for sample # 20? Orange-brown 15) What kind of cleavage does sample # 9 have and what is this mineral commonly used for? Cubic cleavage, salting roads or making ice cream...
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This note was uploaded on 06/15/2011 for the course GEL 111 taught by Professor Vandevelde during the Spring '11 term at Craven CC.

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Introduction to Rocks and Minerals Lab - Gold 5) Does...

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