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Posted: **April 7th, 2012, 6:59 am**

Is it... (Click to Show Hidden Text)

Magnetite? Isometric, with a magnet, black

Posted: **April 8th, 2012, 8:18 am**

10manwire wrote:
Is it... (Click to Show Hidden Text)
Magnetite? Isometric, with a magnet, black

eheheh....good job

that was pretty easy, right?

idk...was it? xD

Posted: **April 8th, 2012, 9:28 am**

It wasn't too easy. However, I had seen the picture beforehand while studying.

Identify all 3 samples (in order)! (Click to Show Hidden Text)

[img]http://www.marlimillerphoto.com/images/Ig-26.jpg[/img]

According to Bowen's Reaction Series, what minerals would form in these rocks?

Good luck!

Posted: **April 8th, 2012, 10:08 am**

10manwire wrote:It wasn't too easy. However, I had seen the picture beforehand while studying.

lol

Posted: **April 8th, 2012, 7:48 pm**

? (Click to Show Hidden Text)

From left to right: Granite, Diorite, Gabbro. Minerals present in all three: Pyroxene, Plagioclase Feldspar

Posted: **April 8th, 2012, 7:51 pm**

Posted: **April 8th, 2012, 8:04 pm**

Posted: **April 8th, 2012, 8:10 pm**

That's gotta be... (Click to Show Hidden Text)

A Calcite Rose?

Posted: **April 8th, 2012, 8:10 pm**

Posted: **April 8th, 2012, 8:12 pm**

Rocks and Minerals Question Marathon