Rocks and Minerals B/C

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

Postby dxu46 » September 5th, 2017, 4:26 pm

Welcome to the 2018 Rocks and minerals Question Marathon!

Short event description: Participants will demonstrate their knowledge of rocks and minerals.
Question
[img]https://www.google.com/imgres?imgurl=https%3A%2F%2Fwww.mindat.org%2Fimagecache%2Fbb%2Ff7%2F06678550014946250612180.jpg&imgrefurl=https%3A%2F%2Fwww.mindat.org%2Fmin-3727.html&docid=gf0ujO8o8WSwPM&tbnid=pNBBsUesdr_VcM%3A&vet=10ahUKEwjwlZKLlo_WAhWIRiYKHR_1A_cQMwiYASgAMAA..i&w=460&h=508&safe=active&bih=603&biw=1280&q=sphalerite&ved=0ahUKEwjwlZKLlo_WAhWIRiYKHR_1A_cQMwiYASgAMAA&iact=mrc&uact=8[/img] [img]https://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.mine-engineer.com%2Fmining%2Fmineral%2FSphalerite-small.jpg&imgrefurl=http%3A%2F%2Fwww.mine-engineer.com%2Fmining%2Fmineral%2Fsphalerite.htm&docid=NH_8soBXCuxDdM&tbnid=tMyDhQSygNiyIM%3A&vet=10ahUKEwj7sNXBlo_WAhWGwiYKHfsyAWY4ZBAzCAYoBDAE..i&w=900&h=780&safe=active&bih=603&biw=1280&q=sphalerite&ved=0ahUKEwj7sNXBlo_WAhWGwiYKHfsyAWY4ZBAzCAYoBDAE&iact=mrc&uact=8[/img] Both specimens are the same mineral. 1. What is this mineral? 2. What is the hardness of this mineral? 3. Under shortwave UV light, what color will this mineral fluoresce? 4. What is a common name that miners like to call this mineral? 5. What is this mineral's main usage?

Sully0413
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Re: Rocks and Minerals B/C

Postby Sully0413 » September 6th, 2017, 8:36 am

1. What is this mineral?
2. What is the hardness of this mineral?
3. Under shortwave UV light, what color will this mineral fluoresce?
4. What is a common name that miners like to call this mineral?
5. What is this mineral's main usage?
[b]Answer[/b]
1. Sphalerite 2. 3.5-4 3. Orange 4. Black/Steel/Rosin Jack 5. Is it used as zinc ore?

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » September 6th, 2017, 12:48 pm

I cannot see the picture for some reason...
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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Re: Rocks and Minerals B/C

Postby dxu46 » September 6th, 2017, 1:45 pm

1. What is this mineral?
2. What is the hardness of this mineral?
3. Under shortwave UV light, what color will this mineral fluoresce?
4. What is a common name that miners like to call this mineral?
5. What is this mineral's main usage?
[b]Answer[/b]
1. Sphalerite 2. 3.5-4 3. Orange 4. Black/Steel/Rosin Jack 5. Is it used as zinc ore?
Correct, your turn!

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Re: Rocks and Minerals B/C

Postby Sully0413 » September 6th, 2017, 6:28 pm

[b]Question[/b]
[img]https://i.pinimg.com/originals/ce/7c/b6/ce7cb6aee4108c4a03be08743ea9fa91.jpg[/img] 1. What mineral is this? 2. What are the sets of intersecting crystals called? 3. What is this mineral's hardness? 4. Where does this mineral normally form? 5. What crystal system does this mineral belong to? 6. What is a common name for this mineral?

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » September 6th, 2017, 7:26 pm

[b]Question[/b]
[img]https://i.pinimg.com/originals/ce/7c/b6/ce7cb6aee4108c4a03be08743ea9fa91.jpg[/img] 1. What mineral is this? 2. What are the sets of intersecting crystals called? 3. What is this mineral's hardness? 4. Where does this mineral normally form? 5. What crystal system does this mineral belong to? 6. What is a common name for this mineral?
1. Staurolite
2. Cruciform twins
3. 7-7.5 on the Mohs scale
4. Metamorphic rock of medium to high metamorphic grade
5. Monoclinic
6. Fairy cross
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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Re: Rocks and Minerals B/C

Postby Sully0413 » September 6th, 2017, 9:04 pm

Correct! :)

Your turn.

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Re: Rocks and Minerals B/C

Postby whythelongface » September 7th, 2017, 12:40 pm

[b]Question[/b]
[img]http://www.healingcrystalshealingstones.com/images3/Albitehealingcrystals.jpg[/img] 1. What is the chemical formula for this mineral? 2. What is this specific variety of this mineral called? 3. What kind of cleavage does this mineral display? 4. Name two minerals this mineral commonly occurs in conjunction with. 5. Name one use this mineral has in industry
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » September 7th, 2017, 1:57 pm

[b]Question[/b]
[img]http://www.healingcrystalshealingstones.com/images3/Albitehealingcrystals.jpg[/img] 1. What is the chemical formula for this mineral? 2. What is this specific variety of this mineral called? 3. What kind of cleavage does this mineral display? 4. Name two minerals this mineral commonly occurs in conjunction with. 5. Name one use this mineral has in industry
1. NaAlSi3O8
2. Albite (plagioclase group/albite-anorthite series)
3. Tabular
4. (groups) K-spar and quartz
5. Useful in the manufacturing of ceramics

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » September 7th, 2017, 3:41 pm

[b]Question[/b]
[img]http://www.healingcrystalshealingstones.com/images3/Albitehealingcrystals.jpg[/img] 1. What is the chemical formula for this mineral? 2. What is this specific variety of this mineral called? 3. What kind of cleavage does this mineral display? 4. Name two minerals this mineral commonly occurs in conjunction with. 5. Name one use this mineral has in industry
1. NaAlSi3O8
2. Albite (plagioclase group/albite-anorthite series)
3. Tabular
4. (groups) K-spar and quartz
5. Useful in the manufacturing of ceramics
4/5. I was looking for "perfect, good, imperfect" for cleavage, or, if you are really savvy with 3D coordinates, "Perfect on [001], good on [010], imperfect on {110}" as defined by http://www.mindat.org, I believe that "tabular" is more of the habit shown here. Very good!

Your turn.
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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Magikarpmaster629
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Re: Rocks and Minerals B/C

Postby Magikarpmaster629 » September 7th, 2017, 4:49 pm

[b]Question[/b]
[img]http://www.healingcrystalshealingstones.com/images3/Albitehealingcrystals.jpg[/img] 1. What is the chemical formula for this mineral? 2. What is this specific variety of this mineral called? 3. What kind of cleavage does this mineral display? 4. Name two minerals this mineral commonly occurs in conjunction with. 5. Name one use this mineral has in industry
1. NaAlSi3O8
2. Albite (plagioclase group/albite-anorthite series)
3. Tabular
4. (groups) K-spar and quartz
5. Useful in the manufacturing of ceramics
4/5. I was looking for "perfect, good, imperfect" for cleavage, or, if you are really savvy with 3D coordinates, "Perfect on [001], good on [010], imperfect on {110}" as defined by http://www.mindat.org, I believe that "tabular" is more of the habit shown here. Very good!

Your turn.
I will mention that typically (at least from what I remember) when tests ask for cleavage they want the type of cleavage, such as basal, cubic, rhombohedral, etc. rather than the quality of cleavage (perfect, good). Tabular would still be incorrect, just putting my input.
Ladue Science Olympiad (2014ish-2017)

A wild goose flies over a pond, leaving behind a voice in the wind.
A man passes through this world, leaving behind a name.

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » September 7th, 2017, 5:41 pm

[b]Question[/b]
[img]http://www.healingcrystalshealingstones.com/images3/Albitehealingcrystals.jpg[/img] 1. What is the chemical formula for this mineral? 2. What is this specific variety of this mineral called? 3. What kind of cleavage does this mineral display? 4. Name two minerals this mineral commonly occurs in conjunction with. 5. Name one use this mineral has in industry
1. NaAlSi3O8
2. Albite (plagioclase group/albite-anorthite series)
3. Tabular
4. (groups) K-spar and quartz
5. Useful in the manufacturing of ceramics
4/5. I was looking for "perfect, good, imperfect" for cleavage, or, if you are really savvy with 3D coordinates, "Perfect on [001], good on [010], imperfect on {110}" as defined by http://www.mindat.org, I believe that "tabular" is more of the habit shown here. Very good!

Your turn.
Oops, I read it as "crystal growth." :P :P :P
Question
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcS5jSk8PTl0jkYUJoO7U3mS4YNYMr4pDUidpOz0D-FOLO4bZ0fkGg[/img] (in real life this rock would have shiny particles) 1. Identify this rock. 2. How did it form? 3. What are the main minerals that constitute this rock? 4. What is the texture of this rock?

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » September 7th, 2017, 6:26 pm

Question
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcS5jSk8PTl0jkYUJoO7U3mS4YNYMr4pDUidpOz0D-FOLO4bZ0fkGg[/img] (in real life this rock would have shiny particles) 1. Identify this rock. 2. How did it form? 3. What are the main minerals that constitute this rock? 4. What is the texture of this rock?
1. Mica schist
2. Continued heat/pressure metamorphism of phyllite
3. Quartz, mica, feldspar, chlorite, talc, etc.
4. Foliated
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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whythelongface
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Re: Rocks and Minerals B/C

Postby whythelongface » September 7th, 2017, 6:28 pm

I will mention that typically (at least from what I remember) when tests ask for cleavage they want the type of cleavage, such as basal, cubic, rhombohedral, etc. rather than the quality of cleavage (perfect, good). Tabular would still be incorrect, just putting my input.
Thank you. I should have been clearer: what is the quality of the cleavage? Since many minerals do not strictly have perfect rhomb, cubic, basal cleavage...
WEST WINDSOR-PLAINSBORO HIGH SCHOOL SOUTH '18
EMORY UNIVERSITY '22
SONT 2017 5th Place Medalist [Microbe Mission]

"One little Sciolyer left all alone,
He went out and hanged himself and then there were none."

Congratulations to WW-P South for winning 14th place at Nationals!

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dxu46
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Re: Rocks and Minerals B/C

Postby dxu46 » September 8th, 2017, 2:08 pm

Question
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcS5jSk8PTl0jkYUJoO7U3mS4YNYMr4pDUidpOz0D-FOLO4bZ0fkGg[/img] (in real life this rock would have shiny particles) 1. Identify this rock. 2. How did it form? 3. What are the main minerals that constitute this rock? 4. What is the texture of this rock?
1. Mica schist
2. Continued heat/pressure metamorphism of phyllite
3. Quartz, mica, feldspar, chlorite, talc, etc.
4. Foliated
Correct! Your turn!


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