Go to: Midterm Exam

Geology (GLGY 423-UCAL) Final

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Some questions have hints and explanations. Click Start to begin.

Start

Congratulations - you have completed Geology (GLGY 423-UCAL) Final.

You scored %%SCORE%% out of %%TOTAL%%.

Your performance has been rated as %%RATING%%

Your answers are highlighted below.

Question 1

Uniaxial minerals can have inclined extinction.

A	True
B	False

Question 1 Explanation:

straight and symmetrical only

Question 2

What is the crystal system and the optic sign of the following crystal?

Image credit: Zoltai and Stout (1985) Mineralogy: Problems and solutions

A	Orthorhombic / positive
B	Triclinic / negative
C	Orthorhombic / negative
D	Monoclinic / positive
E	Triclinic / positive
F	Monoclinic / negative

Question 3

The best property to identify feldspars is the unique twining.

A	True
B	False

Question 3 Explanation:

"In metamorphic rocks, and in low temperature diagenetic rocks in which secondary feldspars may grow, feldspars are typically untwinned." - Dr. Sytle Antao

Question 4

What is the chemical formula for Anthophyllite?

A	Ca₂Mg₅Si₈O₂₂(OH)₂
B	Ca₂Fe₅Si₈O₂₂(OH)₂
C	Fe₇Si₈O₂₂(OH)₂
D	Mg₇Si₈O₂₂(OH)₂

Question 5

Polymorphism is caused by differences in thermodynamic properties at different P-T conditions.

A	True
B	False

Question 6

Given the following information, calculate the 2θ angle.
λ = 0.3419 m
d₂₁₀ = 3.92564 Å
n = 1

A	22.96 degrees
B	6.495 degrees
C	2.495 degrees
D	4.992 degrees
E	11.48 degrees

Question 6 Explanation:

Don't forget it is asking for 2θ not theta; = 2.495 degrees.

Question 7

Which of the following is the most dense mineral in terms of it's chemical structure?

A	Kyanite
B	Carbonates
C	Sillimanite
D	Andalusite
E	Epidote

Question 8

Garnets are isotropic minerals.

A	False
B	True

Question 8 Explanation:

Not always buddy!

Question 9

__I__ temperature reactions will result in __II__.

A	I. high II. low symmetry.
B	I. low II. high symmetry.
C	I. high II. ordered minerals.
D	I. high II. high symmetry.
E	I. low II. disordered minerals.

Question 10

Which of the following is the best way to identify a mineral?

A	Birefringence
B	Interference Figure
C	Chemical composition analysis.
D	Refractive Index
E	Properties in hand sample (physical properties)

Question 11

Electromagnetic radiation is always....

A	confined and non-scattering
B	destructive
C	constructive
D	constructive and destructive

Question 12

In X-ray Diffraction Pattern Analysis, the high intensity regions will be recorded as...

A	higher (high amplitude) peaks.
B	lower (low amplitude) peaks.
C	narrower (thinner) peaks.
D	thicker (fatter) peaks.

Question 13

What is the crystal system and the optic sign of the following crystal?

Image credit: Zoltai and Stout (1985) Mineralogy: Problems and solutions

A	Triclinic / positive
B	Triclinic / negative
C	Orthorhombic / positive
D	Orthorhombic / negative
E	Monoclinic / positive
F	Monoclinic / negative

Question 14

Which of the following analytical methods should you use for determining the crystal structure of a mineral? (choose the best answer)

A	Electron Microprobe
B	ICP and AAS
C	SEM (Scanning Electron Microscope)
D	XRF (X-Ray Fluorescence)
E	X-ray Diffraction

Question 14 Explanation:

While none of the above techniques world provide good details on crystal structures, the X-ray Diffraction is the best choice.

Question 15

What are the bottom two end-members of Olivine ternary diagram?

A	Forsterite and Faylite
B	Ferrosilite and Faylite
C	Faylite and Enstatite
D	Forsterite and Ferrosilite
E	Forsterite and Enstatite
F	Ferrosilite and Enstatite

Question 16

Which of the following planes lines on the [1 1 1] zone?

A	(112)
B	(132)
C	(121)
D	(212)
E	(122)

Question 17

The chemical formula for the Pyroxene iron end-member Orthoferrosilite is Fe₂SiO₃.

A	False
B	True

Question 17 Explanation:

FeSiO₃ would be correct.

Question 18

High temperature and/or dry conditions favors the growth of __I__ crystals over __II__ crystals.

A	I. hydrous II. anhydrous
B	I. pyroxenes II. olivine
C	I. olivine II. pyroxenes
D	I. clinopyroxenes II. orthopyroxenes
E	I. orthopyroxenes II. clinopyroxenes

Question 19

What is the Miller index for 10a: 3b: 5c?

A	(1/10 1/3 1/5)
B	(5 3 10)
C	(10 3 5)
D	(3 10 6)
E	(1 5 3)

Question 20

What is the best description for the following effect in Calcite crystals?

A	This is a result of internal diffraction of natural light.
B	This is caused by the difference in Birefringence.
C	This is an optical property that would only occur in Calcite crystals. Hence it is a good property for mineral identification.
D	This is caused by the difference in velocities between the epsilon and omega rays.
E	This is an optical property caused by non-visible UV light interacting with the visible light spectrum.

Question 21

What is the universally accepted standard thickness of a petrographic thin section?

A	0.35 mm
B	0.003 mm
C	0.30 mm
D	0.03 nm
E	30 000 nm

Question 21 Explanation:

Remember, 30 000 nm = 0.03 mm

Question 22

Abundance of water in a olivine forming environment will result in formation of serpentine and talc.

A	False
B	True

Question 23

Does (123) plain lines in the [210] zone?

A	Yes
B	No

Question 23 Explanation:

No because (1X2) + (2X1) + (3X0) is not equal to zero.

Question 24

In plagioclase solid solution composition diagram, the Albite melting occur at ____ Anorthite melting point.

A	same temperature as
B	low temperatures compared to
C	high temperatures compared to

Question 25

Minerals with same/similar structure but different compositions is known as...

A	polymorphs
B	isomorphs
C	disordered
D	ordered

Question 26

Which of the following is the most dense mineral group in terms of it's chemical structure?

A	Pyroxenes
B	Olivines
C	Amphiboles

Question 27

Given the following information, calculate the wavelength in nm.
Birefringence: 0.024
Thickness of the slide: 0.03 mm

A	7.20 x 10^-4 nm
B	2.14 ^-3 nm
C	5.60 10^-4 nm
D	650 nm
E	560 nm
F	720 nm

Question 27 Explanation:

Question 28

The "phase-diagrams" are used to describe what type of chemical reactions?

A	Organic chemical reactions.
B	Reversible chemical reactions.
C	Chemical reactions involving solid materials.
D	Chemical reactions occurred in solid solutions.
E	Rock forming chemical reactions. Hint: Not the best choice out of the given choices here.

Question 29

The following interference diagram can be best described as...

A	a biaxial Bxa negative.
B	a biaxial optic axis.
C	an uniaxial Bxa negative.
D	a biaxial Bxa positive.
E	an uniaxial optic axis.

Question 30

The length fast direction is at ___ degrees to the length slow direction.

A	between 45 - 90
B	between 90 - 180
C	45
D	90
E	180

Question 31

The analytical methods, ICP and AAS will destroy the tested sample and often the same sample cannot be used for further analysis.

A	True
B	False

Question 32

The chemical formula for the Pyroxene end-member Enstatite is MgSiO₃.

A	True
B	False

Question 33

Alkali feldspars may have several different types of exsolutions. Which of the following type of exsolution can only be observed under X-ray techniques?

A	Microperthite
B	Antiperthite
C	Macroperthite
D	Perthite
E	Cryptoperthite

Question 34

The T-O-T offsets structures in clinopyroxenes are situated in such...

A	alternating between positive and negative faces.
B	randomly arranged T-O-Ts alternates every two chains.
C	longer a - axis compared to the a-axis length of the orthopyroxenes.
D	all facing the same direction.

Question 35

__I__ are low-T, slow cooled alkali feldspars and their Optic Axis Plane (OAP) is __II__ to 010.

A	I. Microcline and Sanidine II. parallel
B	I. Microcline and Orthoclase II. parallel
C	I. Microcline and Orthoclase II. perpendicular
D	I. Sanidine and Orthoclase II. perpendicular
E	I. Microcline and Sanidine II. perpendicular

Question 36

Which cut will provide a Bxo figure for the following crystal?

Image credit: Zoltai and Stout (1985) Mineralogy: Problems and solutions

A	110
B	100
C	101
D	111
E	001

Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results

There are 36 questions to complete.

←

List

→

Return

Shaded items are complete.

1	2	3	4	5
6	7	8	9	10
11	12	13	14	15
16	17	18	19	20
21	22	23	24	25
26	27	28	29	30
31	32	33	34	35
36	End

Return

You may download this exam as a PDF file here.

Credits: Based on the excellent class notes provided by, Dr. Sytle Antao during Fall 2013.
FAQ | Report an Error.

Point group animation test run

Lab final cheat sheet

Min ID Chart — Download the PDF file of mineral identification chart. Also known as the “cheat sheets” or “cheat sheet”.

Sanuja Senanayake

Geology 423 Final Exam-University of Calgary

Go to: Midterm Exam

Geology (GLGY 423-UCAL) Final

Point group animation test run

Lab final cheat sheet

Standing on the shoulders of giants

Go to: Midterm Exam

Geology (GLGY 423-UCAL) Final

Point group animation test run

Lab final cheat sheet

Print/Share:

Standing on the shoulders of giants