ESS 101 Laboratory 3B Quiz, Mineral Identification Questions and Answers 2026

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ESS 101 Laboratory 3B Quiz, Mineral Identification Questions and Answers 2026 Laboratory 3B: Mineral Identification: ESS 101 B Sp 22: Introduction To Geology And Societal Impacts Mineral 1 Luster Look at the above video. Does this mineral have a pearly (like the inside of a shell) or vitreous (glass-like) luster? [ Select ] Streak 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 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. 2/26 0:00 0:05 0:00 / 0:05 0:00 / 0:07 0:00 / 0:14 Laboratory 3B: Mineral Identification: ESS 101 B Sp 22: Introduction To Geology And Societal Impacts Now use these characteristics and Tables A1-3 to identify this mineral. This mineral is [ Select ] . Answer 1: pearly Answer 2: white Answer 3: 1 Answer 4: talc Question 2 1 / 1 pts 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). https://canvas.uw.edu/courses/1545896/quizzes/1651007 3/26 0:00 0:04 0:00 / 0:10 Laboratory 3B: Mineral Identification: ESS 101 B Sp 22: Introduction To Geology And Societal Impacts 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? [ Select ] Cleavage vs Fracture This mineral naturally grows as octahedral (8-sided) crystals (See image above). However, when this mineral breaks , it does not break into nice even planes. This mineral tends to break along uneven fracture surfaces. Color & Other Diagnostic Properties This mineral has one very diagnostic property that is displayed in this video (Watch the video below showing M2's special diagnostic property). 4/26 0:00 / 0:04 0:00 / 0:12 Laboratory 3B: Mineral Identification: ESS 101 B Sp 22: Introduction To Geology And Societal Impacts What is this property? [ Select ] Now use these characteristics and Tables A1-3 to identify this mineral. This mineral is [ Select ] . Answer 1: Answer 2: Answer 3: Answer 4: Answer 5: 5/26 0:00 metallic black/dark grey harder than glass magnetism magnetite Question 3 0.25 / 0.25 pts If you were allowed only one tool to identify Mineral 2 in the future, what would it be? streak plate magnet HCl acid Question 4 1 / 1 pts Mineral 3

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