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! » February 24th, 2018, 4:50 pm

1. Why are diamond and graphite different minerals if they're both made of carbon?
2. What's the name origin of Aragonite?
3. What is the difference between cleavage and fracture?
4. What type of minerals exhibit hackly fracture? Give 2 examples.
5. Give 3 examples of epigenetic changes and define them.
1. Diamond and Graphite are different allotropes of carbon. 
2. It comes from Molina de Aragon, Spain.
3. Cleavage is the breaking of minerals along planes with weak bonding zones. Fracture is the breaking of minerals without a definite shape.
4. Copper, Silver
5. Not sure....?
Correct! For the last one, this was what I have in my binder:
Epigenetic change (secondary processes) may be arranged under a number of headings, each of which is typical of a group of rocks or rock-forming minerals, though usually more than one of these alterations will be found in progress in the same rock. Silicification, the replacement of the minerals by crystalline or crypto-crystalline silica, is most common in felsic rocks, such as rhyolite, but is also found in serpentine, etc. Kaolinization is the decomposition of the feldspars, which are the most common minerals in igneous rocks, into kaolin (along with quartz and other clay minerals); it is best shown by granites and syenites. Serpentinization is the alteration of olivine to serpentine (with magnetite); it is typical of peridotites, but occurs in most of the mafic rocks. In uralitization, secondary hornblende replaces augite; chloritization is the alteration of augite (biotite or hornblende) to chlorite, and is seen in many diabases, diorites and greenstones. Epidotization occurs also in rocks of this group, and consists in the development of epidote from biotite, hornblende, augite or plagioclase feldspar.
(this is from the rock cycle article on wikipedia)
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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Re: Rocks and Minerals B/C

Postby dxu46 » February 26th, 2018, 5:23 pm

1. Why are diamond and graphite different minerals if they're both made of carbon?
2. What's the name origin of Aragonite?
3. What is the difference between cleavage and fracture?
4. What type of minerals exhibit hackly fracture? Give 2 examples.
5. Give 3 examples of epigenetic changes and define them.
1. Diamond and Graphite are different allotropes of carbon. 
2. It comes from Molina de Aragon, Spain.
3. Cleavage is the breaking of minerals along planes with weak bonding zones. Fracture is the breaking of minerals without a definite shape.
4. Copper, Silver
5. Not sure....?
Correct! For the last one, this was what I have in my binder:
Epigenetic change (secondary processes) may be arranged under a number of headings, each of which is typical of a group of rocks or rock-forming minerals, though usually more than one of these alterations will be found in progress in the same rock. Silicification, the replacement of the minerals by crystalline or crypto-crystalline silica, is most common in felsic rocks, such as rhyolite, but is also found in serpentine, etc. Kaolinization is the decomposition of the feldspars, which are the most common minerals in igneous rocks, into kaolin (along with quartz and other clay minerals); it is best shown by granites and syenites. Serpentinization is the alteration of olivine to serpentine (with magnetite); it is typical of peridotites, but occurs in most of the mafic rocks. In uralitization, secondary hornblende replaces augite; chloritization is the alteration of augite (biotite or hornblende) to chlorite, and is seen in many diabases, diorites and greenstones. Epidotization occurs also in rocks of this group, and consists in the development of epidote from biotite, hornblende, augite or plagioclase feldspar.
(this is from the rock cycle article on wikipedia)
:x
I just realized that the whole rock cycle portion on the scioly wiki was copied from Wikipedia.

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Re: Rocks and Minerals B/C

Postby pb5754[] » March 5th, 2018, 4:11 pm

1. Which minerals from the list are ores of the following elements. (list all)
    a. Barium
    b. Beryllium
    c. Copper
    d. Lead
    e. Iron
    f.  Zinc
2. Which country produces the most copper?
3. Give the mineral names based on the official list (Alternative Names are given):
    a. Padparadscha
    b. Brimstone
    c. Peacock Ore
    d. Peridot
    e. Bixbite
West Windsor-Plainsboro High School South '21

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Re: Rocks and Minerals B/C

Postby dxu46 » March 5th, 2018, 4:24 pm

1. Which minerals from the list are ores of the following elements. (list all)
    a. Barium
    b. Beryllium
    c. Copper
    d. Lead
    e. Iron
    f.  Zinc
2. Which country produces the most copper?
3. Give the mineral names based on the official list (Alternative Names are given):
    a. Padparadscha
    b. Brimstone
    c. Peacock Ore
    d. Peridot
    e. Bixbite
1.
  a. Barite
  b. Beryl
  c. Copper, Chalcopyrite, Bornite, Malachite, Azurite
  d. Galena
  e. Hematite, Magnetite, Goethite
  f. Sphalerite
2. Chile
3. (wow I actually have these in my binder so proud of myself XD)
  a. Corundum
  b. Sulfur
  c. Bornite/Chalcopyrite
  d. Olivine
  e. Beryl

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Re: Rocks and Minerals B/C

Postby pb5754[] » March 5th, 2018, 4:25 pm

1. Which minerals from the list are ores of the following elements. (list all)
    a. Barium
    b. Beryllium
    c. Copper
    d. Lead
    e. Iron
    f.  Zinc
2. Which country produces the most copper?
3. Give the mineral names based on the official list (Alternative Names are given):
    a. Padparadscha
    b. Brimstone
    c. Peacock Ore
    d. Peridot
    e. Bixbite
1.
  a. Barite
  b. Beryl
  c. Copper, Chalcopyrite, Bornite, Malachite, Azurite
  d. Galena
  e. Hematite, Magnetite, Goethite
  f. Sphalerite
2. Chile
3. (wow I actually have these in my binder so proud of myself XD)
  a. Corundum
  b. Sulfur
  c. Bornite/Chalcopyrite
  d. Olivine
  e. Beryl
Your turn.
West Windsor-Plainsboro High School South '21

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Re: Rocks and Minerals B/C

Postby whythelongface » March 5th, 2018, 6:21 pm

Just as an FYI, the use of "bixbite" is discouraged because it sounds too similar to bixbyite, another mineral named after the same person. Just say "Red Beryl".
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 » March 5th, 2018, 7:07 pm

Just as an FYI, the use of "bixbite" is discouraged because it sounds too similar to bixbyite, another mineral named after the same person. Just say "Red Beryl".
I read about that in my Audubon book (I think, maybe somewhere else?), but I still think that bixbite is okay because precision matters.
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSibrGDASOMnrEw-FEtK-ggT_0uLkbQDw8mfuvUNhzFulLQhrBFgw[/img]
1. What is this diagram called?
2. What series does this diagram symbolize?
3. What are the two end members of this series?
4. Name the intermediate members of this series.

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Re: Rocks and Minerals B/C

Postby whythelongface » March 5th, 2018, 8:10 pm

Just as an FYI, the use of "bixbite" is discouraged because it sounds too similar to bixbyite, another mineral named after the same person. Just say "Red Beryl".
I read about that in my Audubon book (I think, maybe somewhere else?), but I still think that bixbite is okay because precision matters.
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSibrGDASOMnrEw-FEtK-ggT_0uLkbQDw8mfuvUNhzFulLQhrBFgw[/img]
1. What is this diagram called?
2. What series does this diagram symbolize?
3. What are the two end members of this series?
4. Name the intermediate members of this series.
1. Ternary Diagram
2. Feldspar
3. There are actually three endmembers: Orthoclase/Microcline, Albite, and Anorthite. I assume you meant to put Ab and An together to form Plagioclase.
4. Sanidine, Anorthoclase, Oligoclase, Andesine, Labradorite, Bytownite.
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 » March 6th, 2018, 3:30 pm

Just as an FYI, the use of "bixbite" is discouraged because it sounds too similar to bixbyite, another mineral named after the same person. Just say "Red Beryl".
I read about that in my Audubon book (I think, maybe somewhere else?), but I still think that bixbite is okay because precision matters.
[img]https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSibrGDASOMnrEw-FEtK-ggT_0uLkbQDw8mfuvUNhzFulLQhrBFgw[/img]
1. What is this diagram called?
2. What series does this diagram symbolize?
3. What are the two end members of this series?
4. Name the intermediate members of this series.
1. Ternary Diagram
2. Feldspar
3. There are actually three endmembers: Orthoclase/Microcline, Albite, and Anorthite. I assume you meant to put Ab and An together to form Plagioclase.
4. Sanidine, Anorthoclase, Oligoclase, Andesine, Labradorite, Bytownite.
Yes, I did mean the Ab-An series. I guess it turned into the feldspar diagram when I couldn't find suitable pictures for just the Albite-Anorthite series. Your turn.

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Re: Rocks and Minerals B/C

Postby whythelongface » March 6th, 2018, 7:14 pm

1. Name the common mineral assemblages of the following metamorphic facies:
a. Greenschist
b. Blueschist
c. Eclogite
d. Granulite
2. What is an QAPF diagram used for? What does it stand for?
3. What is the name of the platy variety of albite?
4. Explain the etymology of "feldspar".
5. What is the difference between the two groups of garnet? Which group does almandine belong in?
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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