CRYSTALLOGRAPHY TRIVIA ROUND 2!. Round 2 – Question 1 Excluding AB, crystal faces will most likely...
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Transcript of CRYSTALLOGRAPHY TRIVIA ROUND 2!. Round 2 – Question 1 Excluding AB, crystal faces will most likely...
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CRYSTALLOGRAPHYCRYSTALLOGRAPHY
TRIVIATRIVIA
ROUND 2!ROUND 2!
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Round 2 – Question 1Round 2 – Question 1
Excluding AB, crystal faces will most likely occur along whichlattice plane?
![Page 3: CRYSTALLOGRAPHY TRIVIA ROUND 2!. Round 2 – Question 1 Excluding AB, crystal faces will most likely occur along which lattice plane?](https://reader036.fdocuments.net/reader036/viewer/2022062407/56649d5d5503460f94a3bae2/html5/thumbnails/3.jpg)
Round 2 – Question 2Round 2 – Question 2
What does Steno’s Law of Interfacial What does Steno’s Law of Interfacial Angles state?Angles state?
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Round 2 – Question 3Round 2 – Question 3
What does the crystal growth illustration to the left indicate?
a) lattice plane a has a higher atomic density than o,
b) Lattice plane o has a higher growth rate than a, or
c) 111 faces are only common in large, mature crystals
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Round 2 – Question 4Round 2 – Question 4
The crystallographic axes shown below are indicative of what crystal system?
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Round 2 – Question 5Round 2 – Question 5
How are crystallographic axes different between the orthorhombic and tetragonal systems?
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Round 2 – Question 6Round 2 – Question 6
What crystal face would qualify as the “unit face” in this orthorhombic crystal? (give face intercepts)
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Round 2 – Question 7Round 2 – Question 7
What is the Miller Index for the upper face?
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Round 2 – Question 8Round 2 – Question 8
What is the Miller index of the shaded face in this hexagonal crystal?
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Round 2 – Question 9Round 2 – Question 9
Faces b, m, and a belong to what zone?
[_ _ _]
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Round 2 – Question 10Round 2 – Question 10
What is the form index of the p face?
{_ _ _}
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End of Round 2 End of Round 2
Pass your answers to the team on your Pass your answers to the team on your right for grading. right for grading.
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Round 2 – Question 1Round 2 – Question 1
Excluding AB, crystal faces will most likely occur along whichlattice plane?
ACAC
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Round 2 – Question 2Round 2 – Question 2
What does Steno’s Law of Interfacial What does Steno’s Law of Interfacial Angles state?Angles state?
For a particular mineral, the angle For a particular mineral, the angle between adjacent faces will be between adjacent faces will be constantconstant regardless of crystal shape regardless of crystal shape or size.or size.
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Round 2 – Question 3Round 2 – Question 3
What does the crystal growth illustration to the left indicate?
a) lattice plane a has a higher atomic density than o,
b) Lattice plane o has a higher growth rate than a, or
c) 111 faces are only common in large, mature crystals
![Page 16: CRYSTALLOGRAPHY TRIVIA ROUND 2!. Round 2 – Question 1 Excluding AB, crystal faces will most likely occur along which lattice plane?](https://reader036.fdocuments.net/reader036/viewer/2022062407/56649d5d5503460f94a3bae2/html5/thumbnails/16.jpg)
Round 2 – Question 4Round 2 – Question 4
The crystallographic axes shown below are indicative of what crystal system?
HexagonalHexagonal
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Round 2 – Question 5Round 2 – Question 5
How are crystallographic axes different between the orthorhombic and tetragonal systems?
The a and b axes in the tetragonal The a and b axes in the tetragonal system are the same length, but system are the same length, but are different in orthorhombic are different in orthorhombic crystals.crystals.
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Round 2 – Question 6Round 2 – Question 6
What crystal face would qualify as the “unit face” in this orthorhombic crystal? (give face intercepts)
1a: 1b: 1c1a: 1b: 1c
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Round 2 – Question 7Round 2 – Question 7
What is the Miller Index for the upper face?
(113)(113)
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Round 2 – Question 8Round 2 – Question 8
What is the Miller index of the shaded face in this hexagonal crystal?
(1120)(1120)
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Round 2 – Question 9Round 2 – Question 9
Faces b, m, and a belong to what zone?
[001][001]
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Round 2 – Question 10Round 2 – Question 10
What is the form index of the p face?
{111}