Rocks and Minerals B/C

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kate!
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Re: Rocks and Minerals B/C

Postby kate! » February 24th, 2018, 4:50 pm

pb5754[] wrote:
kate! wrote:
More General Knowledge Because That Was a Good Idea
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.

Answers
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)
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, water, 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

kate! wrote:
pb5754[] wrote:
kate! wrote:
More General Knowledge Because That Was a Good Idea
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.

Answers
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

Random Knowledge
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

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Re: Rocks and Minerals B/C

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

pb5754[] wrote:
Random Knowledge
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

Answers
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

dxu46 wrote:
pb5754[] wrote:
Random Knowledge
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

Answers
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.

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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".
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Re: Rocks and Minerals B/C

Postby dxu46 » March 5th, 2018, 7:07 pm

whythelongface wrote: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.

Oh and new questions here
Image
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

dxu46 wrote:
whythelongface wrote: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.

Oh and new questions here
Image
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.

Answers
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

whythelongface wrote:
dxu46 wrote:
whythelongface wrote: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.

Oh and new questions here
Image
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.

Answers
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

Question
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?
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EMORY UNIVERSITY '22
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"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 karanbe123 » March 14th, 2018, 5:24 pm

whythelongface wrote:
Question
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?


1. a. chlorite + albite + epidote ± actinolite, quartz
b. glaucophane + lawsonite + chlorite + sphene ± epidote ± phengite ± paragonite, omphacite
c. omphacite + garnet ± kyanite, quartz, hornblende, zoisite
d. orthopyroxene + clinopyroxene + hornblende + plagioclase ± biotite
2. Stands for Quartz,Alkali feldspar, Plagioclase, Feldspathoid. It's used to classify plutonic and sometimes volcanic rocks if mineralogical compositions were already determined.
3. cleavelandite?
4. The modern name probably derives from terms used by German miners. "Feld" is an old name for hard rocks and "spat" referred to any rock or mineral that if stroked by a hammer forms plain surfaces (as said feldspars indeed show perfect cleavage).
5. The first group has Aluminum as the second element(pyralspite) and the second group has Aluminum as the first element(Ugrandite). Almandine belongs to the pyralspite group.
Beckendorff 2016-2019

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Re: Rocks and Minerals B/C

Postby whythelongface » March 21st, 2018, 12:42 pm

That's correct, no idea why I didn't say so earlier. Except I heard "feldspat" derived from "field-stone", meaning either unwanted tailings to be discarded in the field, or as a stone commonly found in tilled fields...
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"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 ScottMaurer19 » March 21st, 2018, 3:34 pm

whythelongface wrote:That's correct, no idea why I didn't say so earlier. Except I heard "feldspat" derived from "field-stone", meaning either unwanted tailings to be discarded in the field, or as a stone commonly found in tilled fields...

That's what I remember as well
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Re: Rocks and Minerals B/C

Postby dxu46 » April 11th, 2018, 7:28 pm

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?

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Re: Rocks and Minerals B/C

Postby Etan » April 12th, 2018, 6:56 am

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
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