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 » February 13th, 2018, 5:06 pm

[img]http://www.minimegeology.com/shop/images/rhyolite_300x300_wtrmk.jpg[/img]
1. What rock is this?
2. How does it usually form?
3. This rock is the (plutonic/volcanic) equivalent of (what rock?)
4. Name 4 minerals in this rock's composition.
5. Does it have a high or low silica content?
(bad at rock questions but hey I need to improve)
1. Rhyolite
2. Felsic lava cools quickly, but not rapidly, above the surface of the earth
3. Volcanic, Granite
4. Quartz, Alkali Feldspar, Biotite
5. High? (it's basically quartz right?)

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 13th, 2018, 5:07 pm

[img]http://www.minimegeology.com/shop/images/rhyolite_300x300_wtrmk.jpg[/img]
1. What rock is this?
2. How does it usually form?
3. This rock is the (plutonic/volcanic) equivalent of (what rock?)
4. Name 4 minerals in this rock's composition.
5. Does it have a high or low silica content?
(bad at rock questions but hey I need to improve)
1. Rhyolite
2. Felsic lava cools quickly, but not rapidly, above the surface of the earth
3. Volcanic, Granite
4. Quartz, Alkali Feldspar, Biotite
5. High? (it's basically quartz right?)
Yep! Great job, your turn.
P.S. I was just on the IRC and when you left, I said "maybe they left to answer my question" so I left too, and there was your answer haha
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, water, and more experiments, yay again!
Now I'm learning stuff about oceanography, fossils, and writing/following instructions, yay for the third time!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » February 14th, 2018, 12:01 pm

[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTCw8AfBNsLsaW2Smms95yb0E-wAzo1c1471Ul6kAJavzemzVCjWw[/img]
1. What is this mineral?
2. Who was this mineral named after?
3. What is this mineral's tenacity?
4. What will happen if I clean this mineral with water?
5. Stacks of this mineral are called what?
6. In what part of the Bowen's Reaction Series is this mineral in? (What type of rock does it form in?)

Polarrr
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Re: Rocks and Minerals B/C

Postby Polarrr » February 14th, 2018, 12:15 pm

[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTCw8AfBNsLsaW2Smms95yb0E-wAzo1c1471Ul6kAJavzemzVCjWw[/img]
1. What is this mineral?
2. Who was this mineral named after?
3. What is this mineral's tenacity?
4. What will happen if I clean this mineral with water?
5. Stacks of this mineral are called what?
6. In what part of the Bowen's Reaction Series is this mineral in? (What type of rock does it form in?)
Answer:
1. Biotite
2. Jean-Baptiste Biot
3. Sectile and elastic
4. It will absorb water and start to break apart.
5. I think they're called "books?"
6. Forms felsic rocks. Melts at lower temperatures.

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » February 14th, 2018, 1:42 pm

[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTCw8AfBNsLsaW2Smms95yb0E-wAzo1c1471Ul6kAJavzemzVCjWw[/img]
1. What is this mineral?
2. Who was this mineral named after?
3. What is this mineral's tenacity?
4. What will happen if I clean this mineral with water?
5. Stacks of this mineral are called what?
6. In what part of the Bowen's Reaction Series is this mineral in? (What type of rock does it form in?)
Answer:
1. Biotite
2. Jean-Baptiste Biot
3. Sectile and elastic
4. It will absorb water and start to break apart.
5. I think they're called "books?"
6. Forms felsic rocks. Melts at lower temperatures.
Correct, your turn.

Polarrr
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Re: Rocks and Minerals B/C

Postby Polarrr » February 14th, 2018, 7:36 pm

[img]https://78.media.tumblr.com/104c2912cee1f98197288b0d45a248d2/tumblr_n5sxskqRSr1sicokvo1_500.jpg[/img]
1. Identify this mineral
2. What may this mineral do if it is heated intensely?
3. How does this mineral react with HCl?
4. What is the main place of formation for this mineral?
5. What are some of the common uses for this mineral?
6. For the crystal system this mineral is in, if a specimen displays 1 2-fold axis of symmetry, how many mirror planes must it have?

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 21st, 2018, 9:36 am

[img]https://78.media.tumblr.com/104c2912cee1f98197288b0d45a248d2/tumblr_n5sxskqRSr1sicokvo1_500.jpg[/img]
1. Identify this mineral
2. What may this mineral do if it is heated intensely?
3. How does this mineral react with HCl?
4. What is the main place of formation for this mineral?
5. What are some of the common uses for this mineral?
6. For the crystal system this mineral is in, if a specimen displays 1 2-fold axis of symmetry, how many mirror planes must it have?
EDIT: well... my original answer was wrong (thought it was beryl), yikes, am I allowed to try again since I reverse-searched the image??sorry
1. Barite
2. It turns yellow/orange
3. It does not react
4. It mostly forms in sedimentary rock layers, but also can replace other minerals
5. Drilling mud; high-density filler for paper, rubber, plastics. Can be used as pigment, x-ray shielding.
6. So, I don't really know what this means but the crystal system is orthorhombic
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, water, and more experiments, yay again!
Now I'm learning stuff about oceanography, fossils, and writing/following instructions, yay for the third time!

Polarrr
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Posts: 49
Joined: October 12th, 2017, 7:47 pm

Re: Rocks and Minerals B/C

Postby Polarrr » February 21st, 2018, 6:04 pm

[img]https://78.media.tumblr.com/104c2912cee1f98197288b0d45a248d2/tumblr_n5sxskqRSr1sicokvo1_500.jpg[/img]
1. Identify this mineral
2. What may this mineral do if it is heated intensely?
3. How does this mineral react with HCl?
4. What is the main place of formation for this mineral?
5. What are some of the common uses for this mineral?
6. For the crystal system this mineral is in, if a specimen displays 1 2-fold axis of symmetry, how many mirror planes must it have?
EDIT: well... my original answer was wrong (thought it was beryl), yikes, am I allowed to try again since I reverse-searched the image??sorry
1. Barite
2. It turns yellow/orange
3. It does not react
4. It mostly forms in sedimentary rock layers, but also can replace other minerals
5. Drilling mud; high-density filler for paper, rubber, plastics. Can be used as pigment, x-ray shielding.
6. So, I don't really know what this means but the crystal system is orthorhombic
Correct for #1, 2, 3, 5. For #4, definitely in sedimentary rock layers, but was also looking for hydrothermal veins. #6 would be that the specimen would have 2 mirror planes. The required symmetry basically depends on the crystal system which you knew was orthorhombic. It's just the symmetry for that specific system.

Your turn.

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 22nd, 2018, 5:52 am

[img]https://img.etsystatic.com/il/4b3e3b/815572218/il_fullxfull.815572218_h7mj.jpg[/img]
1. Identify this mineral.
2. What happens to some specimens when they are exposed to air?
3. What is another name for rhodonite?
4. What are some of its uses?
5. What is the origin of its name?
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, water, and more experiments, yay again!
Now I'm learning stuff about oceanography, fossils, and writing/following instructions, yay for the third time!

pb5754[]
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Re: Rocks and Minerals B/C

Postby pb5754[] » February 22nd, 2018, 12:32 pm

[img]https://img.etsystatic.com/il/4b3e3b/815572218/il_fullxfull.815572218_h7mj.jpg[/img]
1. Identify this mineral.
2. What happens to some specimens when they are exposed to air?
3. What is another name for rhodonite?
4. What are some of its uses?
5. What is the origin of its name?
1. Rhodonite
2. They tarnish black or brown.
3. :?: 
4. Gemstones, Ornaments, Manganese Ore
5.The Greek word [i]Rhodos[/i], meaning rose-colored.
Although I was able to ID this almost immediately, question #3 gives away the answer. :P


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