Laboratory 3B- Mineral Identification| ESS 101 B Au | Introduction To Geology And Societal Impacts University of Washington

Laboratory 3B- Mineral Identification| ESS 101 B Au | Introduction To Geology And
Societal Impacts University of Washington
Laboratory 3B: Mineral Identification
Time Limit None
Allowed Attempts 2


Instructions
ATTENTION : You must complete Laboratory 3A: An Introduction to Minerals (https://canvas.uw.edu/courses/1664976/quizzes/1922411) BEFORE
you complete this lab. Lab 3A will teach you about the characteristics we use to describe minerals. Lab 3B will have you use the characteristics to
identify minerals.

If you do not first complete Lab 3A, Lab 3B will be difficult/impossible.

Terry has filmed a video (see below) that will introduce you to mineral identification techniques used in this lab to classify 14 unknown mineral
specimens.




This lab guides you through identifying 14 common minerals. We have given you 2 attempts. This means that you can submit the whole quiz up to 2 times. You
should answer all the questions about each mineral before you submit the first time. Then, you should receive feedback about which questions you got wrong and
can go over the questions with your T.A. during your weekly discussion session. Then you can complete the 2nd attempt to correct previous errors.

NOTE: Canvas appears to autosave your answers to the quiz. If you've made progress and need to take a break for whatever reason, you should be able to exit
the quiz without submitting. When you return to the quiz, your answers should be saved. There is no time limit besides the time that the quiz opens and closes.


This quiz was locked Oct 22 at 11:59pm.



Attempt History
Attempt Time Score
LATEST Attempt 1 45 minutes 15 out of 15




 Answers will be shown after your last attempt

Score for this attempt: 15 out of 15
Submitted Oct 22 at 3:50pm
This attempt took 45 minutes.



You should have completed Lab 3A. You'll need to refer to the information within that quiz to answer some of

,the following questions. Here is Link to PDF 3A
($CANVAS_COURSE_REFERENCE$/file_ref/gd5484110a99213c8b65a41e2a72ca68f/download?download_frd=1) to make it a
little easier.

Once you've described a mineral, you will then use the following tables to identify it.


Table A-1 Table A-2

Metallic Minerals Light Colored Non-metallic Minerals
(https://canvas.uw.edu/courses/1664976/files/109730558/download? (https://canvas.uw.edu/courses/1664976/files/109730689/do wnload?
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(https://canvas.uw.edu/courses/1664976/files/109730558/download? (https://canvas.uw.edu/courses/1664976/files/109730689/do wnload?
(https://ca
download_frd=1) download_frd=1)


If you're having trouble viewing the photos/videos below, here is a Link to PDF 3B
($CANVAS_COURSE_REFERENCE$/file_ref/g71a1367645286dfec2baa02c337042e3/download?download_frd=1) to make it a
little easier.




Question 1 pts



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.

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 pts



Mineral 2