Rocks and Minerals Question Marathon

December 10th, 2011, 8:05 pm

Wild Guess (Click to Show Hidden Text)

Obsidian?

quizbowl · Post by **quizbowl** » December 10th, 2011, 8:15 pm

Nope. Try again!

tuftedtitmouse12 · December 11th, 2011, 6:33 am

??? (Click to Show Hidden Text)

bituminous coal
used for smithing and coking
named after....dunno :(

quizbowl · Post by **quizbowl** » December 11th, 2011, 7:15 am

tuftedtitmouse12 wrote:
??? (Click to Show Hidden Text)
bituminous coal
used for smithing and coking
named after....dunno :(

Nope!

Post by **fishman100** » December 11th, 2011, 8:27 am

[hide]|Goethite?
Named after Johann Wolfgang von Goethe
Used as an iron ore[/hide]

quizbowl · Post by **quizbowl** » December 11th, 2011, 8:44 am

fishman100 wrote:[hide]|Goethite?
Named after Johann Wolfgang von Goethe
Used as an iron ore[/hide]

Yes!

Post by **fishman100** » December 11th, 2011, 4:38 pm

Next specimen (Click to Show Hidden Text)

[img]http://tinyurl.com/bv3c5a8[/img]
How did you ID the specimen?

December 11th, 2011, 5:09 pm

Answer (Click to Show Hidden Text)

Phyllite? I looked for the shininess coupled with grooves?

Post by **fishman100** » December 11th, 2011, 5:55 pm

PacificGoldenPlover wrote:
Answer (Click to Show Hidden Text)
Phyllite? I looked for the shininess coupled with grooves?

Correct! Good job.

December 11th, 2011, 6:31 pm

Identify This Species is the intrusive/extrusive equivalent of what? (Click to Show Hidden Text)

[img]http://geology.com/rocks/pictures/gabbro-380.jpg[/img]

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