Rocks and Minerals Question Marathon

quizbowl
Member
Posts: 1044
Joined: April 10th, 2010, 3:48 pm
Division: Grad
State: NY
Location: Syosset High, WLI, NY --> UChicago '16

Re: Rocks and Minerals Question Marathon

1A) CaMg(CO3)2
1B) CaCO3
2) Druse
3) High manganese content
4) Organogenic
Got it all! Not bad, Fishman100.
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.

iYOA
Member
Posts: 184
Joined: March 1st, 2008, 7:13 am
Division: C
State: NJ

Re: Rocks and Minerals Question Marathon

just saying, i think posting follow up questions is really helpful. thanks
West Windsor-Plainsboro High School South

fishman100
Exalted Member
Posts: 478
Joined: January 28th, 2011, 1:26 pm
Division: Grad
State: VA

Re: Rocks and Minerals Question Marathon

Next question:
[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.
Langley HS Science Olympiad '15

LoopQuantumGravity
Member
Posts: 20
Joined: April 6th, 2012, 6:58 pm
Division: B
State: ID
Location: In a universe with quantized spacetime

Re: Rocks and Minerals Question Marathon

Next question:
[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.
1.Rhodonite
2. Calcium
3. Silicates (specifically inosilicates)
4. Massachusetts
5. Hornblende
$e^{i\pi}+1=0$

fishman100
Exalted Member
Posts: 478
Joined: January 28th, 2011, 1:26 pm
Division: Grad
State: VA

Re: Rocks and Minerals Question Marathon

Next question:
[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.
1.Rhodonite
2. Calcium
3. Silicates (specifically inosilicates)
4. Massachusetts
5. Hornblende
Correct! Your turn.
Langley HS Science Olympiad '15

LoopQuantumGravity
Member
Posts: 20
Joined: April 6th, 2012, 6:58 pm
Division: B
State: ID
Location: In a universe with quantized spacetime

Re: Rocks and Minerals Question Marathon

[img]https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcTaL3P0kjxhzhqDhZOLWKYyr5uesXQc63l_ZctiJ1JkPye6cYHI[/img]
1. Name 3 minerals that have this arrangement of silicon-oxygen tetrahedra.
2. What type of cleavage is common in minerals with this structure?
3. What is the name for this group of silicates?
4. What is the ratio of silicon to oxygen in this group of silicates?
$e^{i\pi}+1=0$

nerdygirl
Member
Posts: 1
Joined: August 11th, 2012, 4:52 pm
Division: C
State: NC

Re: Rocks and Minerals Question Marathon

[hide]1. Name 3 minerals that have this arrangement of silicon-oxygen tetrahedra.
Talc, Biotite, Muscovite, Kaolinite, Lepidolite
2. What type of cleavage is common in minerals with this structure?
Perfect
3. What is the name for this group of silicates?
phyllosilicates
4. What is the ratio of silicon to oxygen in this group of silicates?
2:5[/hide]

hotchocolate123
Member
Posts: 89
Joined: November 27th, 2011, 3:43 pm
Division: B
State: TX
Location: 37°49′S 175°46′E

Re: Rocks and Minerals Question Marathon

We should start the thread up again....
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)

eox
Member
Posts: 32
Joined: July 15th, 2012, 1:35 pm
Division: C
State: CA

Re: Rocks and Minerals Question Marathon

we really should. i'm looking forward to this season

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