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Let's start this up again for the 2017-18 season!


1. Identify the bigger mineral.
2. Identify the mineral inside of the bigger mineral.
3. What is the name for these two minerals formed together?
4. What is the mineral inside the bigger mineral's main use?

dxu46 wrote:Let's start this up again for the 2017-18 season!


1. Identify the bigger mineral.
2. Identify the mineral inside of the bigger mineral.
3. What is the name for these two minerals formed together?
4. What is the mineral inside the bigger mineral's main use?

[1. Quartz (crystal), 2. Rutile, 3. Rutilated Quartz, 4. Rutile is used as a titanium ore][/hide]

ScottMaurer19 wrote:

dxu46 wrote:Let's start this up again for the 2017-18 season!


1. Identify the bigger mineral.
2. Identify the mineral inside of the bigger mineral.
3. What is the name for these two minerals formed together?
4. What is the mineral inside the bigger mineral's main use?

[1. Quartz (crystal), 2. Rutile, 3. Rutilated Quartz, 4. Rutile is used as a titanium ore][/hide]

Obviously I messed up the hide feature again oops

ScottMaurer19 wrote:

ScottMaurer19 wrote:

dxu46 wrote:Let's start this up again for the 2017-18 season!


1. Identify the bigger mineral.
2. Identify the mineral inside of the bigger mineral.
3. What is the name for these two minerals formed together?
4. What is the mineral inside the bigger mineral's main use?

[1. Quartz (crystal), 2. Rutile, 3. Rutilated Quartz, 4. Rutile is used as a titanium ore][/hide]

Obviously I messed up the hide feature again oops

Impressive, Your turn!

Two different examples of the same thing

Questions:
1. What general mineral name would be given to these specimens? (i.e. if it is rose quartz then say quartz)
2. What is the name given to this special formation?
3. How might these specimens have formed?
4. Which property causes these formations? (there are multiple answers to this)

ScottMaurer19 wrote:

Two different examples of the same thing

Questions:
1. What general mineral name would be given to these specimens? (i.e. if it is rose quartz then say quartz)
2. What is the name given to this special formation?
3. How might these specimens have formed?
4. Which property causes these formations? (there are multiple answers to this)

I might have butchered this lol: 1. Feldspar? (Potassium Feldspar?)
2. Perthite?
3. Exsolution. (A solid solution of a grain of alkali feldspar is cooled and is composed between K-Feldspar and Albite)?
4. Cation size?

afrohair wrote:

ScottMaurer19 wrote:

Two different examples of the same thing

Questions:
1. What general mineral name would be given to these specimens? (i.e. if it is rose quartz then say quartz)
2. What is the name given to this special formation?
3. How might these specimens have formed?
4. Which property causes these formations? (there are multiple answers to this)

I might have butchered this lol: 1. Feldspar? (Potassium Feldspar?)
2. Perthite?
3. Exsolution. (A solid solution of a grain of alkali feldspar is cooled and is composed between K-Feldspar and Albite)?
4. Cation size?

1, 2, 3, are correct
for 4 I was looking more for miscibility but there are multiple answers so you got all correct

If someone doesn't post in the next 24 hours, I will post a question.

1. Identify this mineral (group).
2. Identify this mineral (variety).
3. To what crystal system does this mineral belong?
4. Name a locality where this variety is found in good form.
5. Where does this mineral (variety) get its name from?
6. What element is this mineral an ore of?