Rocks and Minerals B/C

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

Postby kate! » January 30th, 2018, 9:40 am

General knowledge questions
1. What is the difference between continuous and discontinuous when it comes to the Bowen's Reaction Series?
2. Define isometric.
3. What is the hardness of your fingernail?
4. What are elements commonly found in Mafic Igneous rocks?  Felsic?
5. Why are properties like streak and density unorthodox ways to identify rocks?
1. Continuous means the evolution of plagioclase feldspar from being calcium-rich to sodium-rich. Discontinuous means the formation of mafic minerals like olivine, pyroxene, biotite mica, and amphibole
2. Isometric is the cubic crystal system.
3. 2.5
4. Mafic= iron (Fe) and magnesium (Mg) Felsic= aluminum (Al) and silicon (Si)
5. Properties like streak and density aren't usually used to classify rocks because of how common they are between each kind of rock. Instead, we use texture to classify them because each rock has a different texture.
#1 is almost directly copied from this, but correct, your turn.
I didn't really understand so I looked it up and I couldn't figure out how to word it differently from the website because the answer was right. I guess that is cheating, sorry.

Also here are new questions
[img]http://www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousTextures/4PorphyriticFinez/AndesiteHblPorph.jpg[/img]
1. What rock is this?
2. Describe its texture.
3. Why does this texture occur?
4. What rock is this rock most similar to?
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, freshwater, and more experiments, yay again!
Now I'm learning stuff about oceanography, saltwater, and birds, yay for the third time!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » February 2nd, 2018, 3:55 pm

[img]http://www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousTextures/4PorphyriticFinez/AndesiteHblPorph.jpg[/img]
1. What rock is this?
2. Describe its texture.
3. Why does this texture occur?
4. What rock is this rock most similar to?
1. Andesite
2. Porphyritic/Medium Grained
3. Magma cools slowly then rapidly, forming crystals of different sizes.
4. In composition? Diorite -- it is the plutonic version of Andesite.

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Re: Rocks and Minerals B/C

Postby pb5754[] » February 2nd, 2018, 6:46 pm

<Deleted>
West Windsor-Plainsboro High School South '21

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 3rd, 2018, 2:59 pm

[img]http://www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousTextures/4PorphyriticFinez/AndesiteHblPorph.jpg[/img]
1. What rock is this?
2. Describe its texture.
3. Why does this texture occur?
4. What rock is this rock most similar to?
1. Andesite
2. Porphyritic/Medium Grained
3. Magma cools slowly then rapidly, forming crystals of different sizes.
4. In composition? Diorite -- it is the plutonic version of Andesite.
Good job. Your turn!
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, freshwater, and more experiments, yay again!
Now I'm learning stuff about oceanography, saltwater, and birds, yay for the third time!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » February 3rd, 2018, 4:58 pm

[img]http://www.johnbetts-fineminerals.com/jhbnyc/mineralmuseum/13512det.jpg[/img]
1. What mineral is this?
2. What is it's cleavage angle?
3. This mineral occurs in what type(s) of rock?  Be as specific as you can.
4. How did this mineral get it's name?
5. What would an iron-rich variety of this mineral be called? What about magnesium?

Credit to [url]https://random.org[/url] for helping me decide on a mineral to write a question on!

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 8th, 2018, 4:15 pm

[img]http://www.johnbetts-fineminerals.com/jhbnyc/mineralmuseum/13512det.jpg[/img]
1. What mineral is this?
2. What is it's cleavage angle?
3. This mineral occurs in what type(s) of rock?  Be as specific as you can.
4. How did this mineral get it's name?
5. What would an iron-rich variety of this mineral be called? What about magnesium?

Credit to [url]https://random.org[/url] for helping me decide on a mineral to write a question on!
1. Hornblende
2. 124 and 56 degrees
3. metamorphic and igneous
4. German word horn for its color and blenden, which means deceiver
5. Ferrohornblende and magnesiohornblende
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, freshwater, and more experiments, yay again!
Now I'm learning stuff about oceanography, saltwater, and birds, yay for the third time!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » February 8th, 2018, 4:40 pm

[img]http://www.johnbetts-fineminerals.com/jhbnyc/mineralmuseum/13512det.jpg[/img]
1. What mineral is this?
2. What is it's cleavage angle?
3. This mineral occurs in what type(s) of rock?  Be as specific as you can.
4. How did this mineral get it's name?
5. What would an iron-rich variety of this mineral be called? What about magnesium?

Credit to [url]https://random.org[/url] for helping me decide on a mineral to write a question on!
1. Hornblende
2. 124 and 56 degrees
3. metamorphic and igneous
4. German word horn for its color and blenden, which means deceiver
5. Ferrohornblende and magnesiohornblende
For #3, I was looking for type of igneous rock, but otherwise that's right. Your turn.

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 9th, 2018, 12:32 pm

[img]http://www.daviddarling.info/images/chalcopyrite.jpg[/img]
1. What mineral is this?
2. What color(s) does it tarnish to?
3. What type of acid is it soluble in?
4. What element is it a major ore of?
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, freshwater, and more experiments, yay again!
Now I'm learning stuff about oceanography, saltwater, and birds, yay for the third time!

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dxu46
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Posts: 798
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Re: Rocks and Minerals B/C

Postby dxu46 » February 9th, 2018, 2:15 pm

[img]http://www.daviddarling.info/images/chalcopyrite.jpg[/img]
1. What mineral is this?
2. What color(s) does it tarnish to?
3. What type of acid is it soluble in?
4. What element is it a major ore of?
1. Chalcopyrite 
2. A lot, including, but are not limited to, blue and purple
3. HNO3
4. Cu

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kate!
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Joined: October 11th, 2017, 12:07 pm
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Re: Rocks and Minerals B/C

Postby kate! » February 9th, 2018, 4:41 pm

[img]http://www.daviddarling.info/images/chalcopyrite.jpg[/img]
1. What mineral is this?
2. What color(s) does it tarnish to?
3. What type of acid is it soluble in?
4. What element is it a major ore of?
1. Chalcopyrite 
2. A lot, including, but are not limited to, blue and purple
3. HNO3
4. Cu
Correct! You can also say nitric acid and copper, but the chemical answers are good.
Your turn!
Two years ago I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Last year I knew stuff about amphibians, reptiles, freshwater, and more experiments, yay again!
Now I'm learning stuff about oceanography, saltwater, and birds, yay for the third time!


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