Rocks and Minerals Question Marathon

[quizbowl]

Let me see if I have this right (Click to Show Hidden Text)

1A) CaMg(CO3)2 
1B) CaCO3
2) Druse
3) High manganese content
4) Organogenic

Got it all! Not bad, Fishman100.

[iYOA]

just saying, i think posting follow up questions is really helpful. thanks

[fishman100]

Next question:

Click (Click to Show Hidden Text)

[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.

[LoopQuantumGravity]

Next question:

Click (Click to Show Hidden Text)

[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.

Click Me (Click to Show Hidden Text)

1.Rhodonite
2. Calcium
3. Silicates (specifically inosilicates)
4. Massachusetts
5. Hornblende

[fishman100]

Next question:

Click (Click to Show Hidden Text)

[img]http://tinyurl.com/buswpw8[/img]
Some facts about this mineral:
[list][*]This mineral belongs to the class that constitutes around 90% of the Earth's crust.
[*]The dimorph of this mineral can sometimes be associated with pyrophanite.
[*]Parts of the mineral may appear brown due to surface oxidation.[/list]
1) ID the mineral.
2) This mineral actually contains six elements: Mn, Fe, Mg, O, Si, and one other. What is the sixth element that is represented by the blue spheres in the image above?
3) What mineral class does this specimen belong to?
4) This specimen is the official state gem of what state?
5) Give another mineral on the 2012 SO Rock/Mineral list that also belongs to the same mineral class.

Click Me (Click to Show Hidden Text)

1.Rhodonite
2. Calcium
3. Silicates (specifically inosilicates)
4. Massachusetts
5. Hornblende

Correct! Your turn.

[LoopQuantumGravity]

. (Click to Show Hidden Text)

[img]https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcTaL3P0kjxhzhqDhZOLWKYyr5uesXQc63l_ZctiJ1JkPye6cYHI[/img]
1. Name 3 minerals that have this arrangement of silicon-oxygen tetrahedra.
2. What type of cleavage is common in minerals with this structure?
3. What is the name for this group of silicates?
4. What is the ratio of silicon to oxygen in this group of silicates?

[nerdygirl]

[hide]1. Name 3 minerals that have this arrangement of silicon-oxygen tetrahedra.
Talc, Biotite, Muscovite, Kaolinite, Lepidolite
2. What type of cleavage is common in minerals with this structure?
Perfect
3. What is the name for this group of silicates?
phyllosilicates
4. What is the ratio of silicon to oxygen in this group of silicates?
2:5[/hide]

[hotchocolate123]

We should start the thread up again....

[eox]

we really should. i'm looking forward to this season