Rocks and Minerals B/C

Test your knowledge of various Science Olympiad events.
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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » Thu Apr 12, 2018 3:55 pm

Etan wrote:Here's a question!

Image

1.What is the chemical composition of this specimen?
2.What mineral does this specimen form from?
3.List three other minerals that have the same classification

btw sorry that I takes up the whole screen I don't know how to do the reveal button thing

1. SiO2
2. It doesn't form from a mineral as it is a mineral, but I'm assuming you meant "what mineral is this a variety of," in which it is Quartz.
3. Amethyst, Agate, Chalcedony

Also someone answer my question above.
Ladue Science Olympiad!
2017 Events:
(R/S/N)
ExD (1,1,8)
RS (1,1,1)
R&M (1,1,13)

2018 Events:
(R)
ExD (1)
RS (1)
R&M (1)

"Those who cannot learn from history science are doomed to repeat it get an F." - George Santayana dxu46
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Re: Rocks and Minerals B/C

Postby ScottMaurer19 » Thu Apr 12, 2018 4:43 pm

dxu46 wrote:
Etan wrote:Here's a question!

Image

1.What is the chemical composition of this specimen?
2.What mineral does this specimen form from?
3.List three other minerals that have the same classification

btw sorry that I takes up the whole screen I don't know how to do the reveal button thing

1. SiO2
2. It doesn't form from a mineral as it is a mineral, but I'm assuming you meant "what mineral is this a variety of," in which it is Quartz.
3. Amethyst, Agate, Chalcedony

Also someone answer my question above.

Citrine forms from amethyst when it is heated/heat treated
Placements:
Div B Nats:
2014 Dynamic: 5th, Rocks: 9th
2015 Dynamic: 3rd, Fossils: 2nd
2016 ELG: 6th, Fossils: 1st

2017 (r/s/n):
Hydro: 3/5/18
Robot Arm: na/1/1
Rocks: 1/1/1

2018 (MIT/Reg/States):
Helicopters: na/2/
Herpetology: 12/1/
Mission: 2/1/
Rocks: 1/1/
Ecology:na/6/

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » Thu Apr 12, 2018 8:23 pm

ScottMaurer19 wrote:
dxu46 wrote:
Etan wrote:Here's a question!

Image

1.What is the chemical composition of this specimen?
2.What mineral does this specimen form from?
3.List three other minerals that have the same classification

btw sorry that I takes up the whole screen I don't know how to do the reveal button thing

1. SiO2
2. It doesn't form from a mineral as it is a mineral, but I'm assuming you meant "what mineral is this a variety of," in which it is Quartz.
3. Amethyst, Agate, Chalcedony

Also someone answer my question above.

Citrine forms from amethyst when it is heated/heat treated

No, I understand that, but it doesn't form from amethyst per se, as heat treating isn't creating a whole different mineral (kind of, but no).

Also
dxu46 wrote:
New Questions
ImageImageImage
1. All three of these specimens are varieties of what mineral?
2. Name the three varieties in order from left to right.
3. Why do these varieties occur? (specifically, what elements make the mineral turn different colors?)
4. What crystal system does this mineral crystallize into?
5. Define triboluminiscence.
6. Is this mineral triboluminiscent?
7. Define piezoelectricity.
8. Is this mineral piezoelectric?
Ladue Science Olympiad!
2017 Events:
(R/S/N)
ExD (1,1,8)
RS (1,1,1)
R&M (1,1,13)

2018 Events:
(R)
ExD (1)
RS (1)
R&M (1)

"Those who cannot learn from history science are doomed to repeat it get an F." - George Santayana dxu46
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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » Sat Apr 14, 2018 5:52 pm

dxu46 wrote:
New Questions
ImageImageImage
1. All three of these specimens are varieties of what mineral?
2. Name the three varieties in order from left to right.
3. Why do these varieties occur? (specifically, what elements make the mineral turn different colors?)
4. What crystal system does this mineral crystallize into?
5. Define triboluminiscence.
6. Is this mineral triboluminiscent?
7. Define piezoelectricity.
8. Is this mineral piezoelectric?

To my knowledge the rightmost two specimens are of the same variety.
To the South Science Club: Thank you for an amazing two years and good luck next year.

2017
Regs/Yale/Princeton/SOUP/States/Nats
Microbe: 3/-/3/-/4/5
RemSen: -/1/4/2/1/-
R&M: 1/2/4/-/3/-

2018
Regs/Yale/Princeton/States
Fermi: -/5/-/2
Microbe: 1/3/-/-
RemSen: -/2/3/1
R&M: 2/1/1/2

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » Sat Apr 14, 2018 6:25 pm

whythelongface wrote:
dxu46 wrote:
New Questions
ImageImageImage
1. All three of these specimens are varieties of what mineral?
2. Name the three varieties in order from left to right.
3. Why do these varieties occur? (specifically, what elements make the mineral turn different colors?)
4. What crystal system does this mineral crystallize into?
5. Define triboluminiscence.
6. Is this mineral triboluminiscent?
7. Define piezoelectricity.
8. Is this mineral piezoelectric?

To my knowledge the rightmost two specimens are of the same variety.

The one on the bottom is supposed to be translucent-transparent, slightly brown. I couldn't find a good picture, sorry.
Ladue Science Olympiad!
2017 Events:
(R/S/N)
ExD (1,1,8)
RS (1,1,1)
R&M (1,1,13)

2018 Events:
(R)
ExD (1)
RS (1)
R&M (1)

"Those who cannot learn from history science are doomed to repeat it get an F." - George Santayana dxu46
Friend me here!

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » Tue Apr 17, 2018 3:49 pm

dxu46 wrote:The one on the bottom is supposed to be translucent-transparent, slightly brown. I couldn't find a good picture, sorry.

I can't see that making much of a difference. Blue corundum is most often known as sapphire, regardless of how gemmy it is.
To the South Science Club: Thank you for an amazing two years and good luck next year.

2017
Regs/Yale/Princeton/SOUP/States/Nats
Microbe: 3/-/3/-/4/5
RemSen: -/1/4/2/1/-
R&M: 1/2/4/-/3/-

2018
Regs/Yale/Princeton/States
Fermi: -/5/-/2
Microbe: 1/3/-/-
RemSen: -/2/3/1
R&M: 2/1/1/2

ScottMaurer19
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Re: Rocks and Minerals B/C

Postby ScottMaurer19 » Tue Apr 17, 2018 4:15 pm

whythelongface wrote:
dxu46 wrote:The one on the bottom is supposed to be translucent-transparent, slightly brown. I couldn't find a good picture, sorry.

I can't see that making much of a difference. Blue corundum is most often known as sapphire, regardless of how gemmy it is.

I was look at pictures earlier while making pictures for a test. The variety is supposed to show asterism/chatoyancy caused by inclusions but the picture doesn't exhibit any
Placements:
Div B Nats:
2014 Dynamic: 5th, Rocks: 9th
2015 Dynamic: 3rd, Fossils: 2nd
2016 ELG: 6th, Fossils: 1st

2017 (r/s/n):
Hydro: 3/5/18
Robot Arm: na/1/1
Rocks: 1/1/1

2018 (MIT/Reg/States):
Helicopters: na/2/
Herpetology: 12/1/
Mission: 2/1/
Rocks: 1/1/
Ecology:na/6/


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