Geology > QUESTIONS & ANSWERS > ESS 101 INTRO TO GEOLOGY - University of Washington _ Laboratory 3B: Mineral Identification . Fall 2 (All)

ESS 101 INTRO TO GEOLOGY - University of Washington _ Laboratory 3B: Mineral Identification . Fall 2022. Score for this attempt: 13.5 out of 14

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ESS 101 INTRO TO GEOLOGY - University of Washington _ Laboratory 3B: Mineral Identification . Score for this attempt: 13.5 out of 14 Mineral 1LusterLook at the above video. Does this mineral have a p ... early (like the inside of a shell) or vitreous (glass-like) luster?[ Select ]Streak0:00 1/30/22, 4:09 PM Laboratory 3B: Mineral Identification: ESS 101 B Wi 22: Introduction To Geology And Societal Impacts https://canvas.uw.edu/courses/1515924/quizzes/1604215 4/51 What is the streak color for this mineral? white Hardness This mineral is extremely soft and can be scratched with your fingernail (hardness 2.5) See video below (watch full screen to see clear scratch). We can use a hardness probe to further refine our hardness test. Watch the video below using the Hardness "2" probe to further test the hardness of M1 (watch full-screen to clearly see results of test). Does the Hardness probe "2" scratch M1? Based on your observation of video what can you say about the 1/30/22, 4:09 PM Laboratory 3B: Mineral Identification: ESS 101 B Wi 22: Introduction To Geology And Societal Impacts https://canvas.uw.edu/courses/1515924/quizzes/1604215 5/51 hardness of this mineral? [ Select ] Cleavage vs Fracture This mineral has one cleavage plane. Color & Other Diagnostic Properties This mineral is typically white and feels greasy if rubbed between your fingers. Now use these characteristics and Tables A1-3 to identify this mineral. This mineral is [ Select ] . pearly white 1 talc Question 2 0.5 / 0.5 pts 1/30/22, 4:09 PM Laboratory 3B: Mineral Identification: ESS 101 B Wi 22: Introduction To Geology And Societal Impacts https://canvas.uw.edu/courses/1515924/quizzes/1604215 6/51 Mineral 2 Luster Look at the above video. What is the luster of this mineral? [ Select ] Streak Observe the color of the streak of this mineral on the white porcelain streak plate (watch the two videos below in full-screen mode). 1/30/22, 4:09 PM Laboratory 3B: Mineral Identification: ESS 101 B Wi 22: Introduction To Geology And Societal Impacts https://canvas.uw.edu/courses/1515924/quizzes/1604215 7/51 What is the streak color for this mineral? [ Select ] Hardness A glass plate hardness test was conducted for M2 (See video below). Determine M2's hardness relative to the glass plate. If M2 leaves a scratch it is harder than glass, and if M2 does not scratch grass it is softer than glass. What can you infer from this hardness test about M2? [Show More]

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