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Re: Rocks and Minerals Question Marathon
Posted: March 28th, 2013, 7:29 pm
by PacificGoldenPlover
Identify (Click to Show Hidden Text) [img]http://depthome.brooklyn.cuny.edu/geology/core332/images/pyroxene.jpg[/img]
Re: Rocks and Minerals Question Marathon
Posted: March 28th, 2013, 7:38 pm
by inluvwyth_WANTED
Hmm.. (Click to Show Hidden Text) Augite Pyroxene
Re: Rocks and Minerals Question Marathon
Posted: March 28th, 2013, 7:40 pm
by PacificGoldenPlover
correct
Re: Rocks and Minerals Question Marathon
Posted: March 28th, 2013, 9:24 pm
by inluvwyth_WANTED
Identify with uses of both (Click to Show Hidden Text) [img]http://upload.wikimedia.org/wikipedia/commons/1/12/Epidote-Quartz-133771.jpg[/img][img]http://en.wikipedia.org/wiki/File:6158M-barite2.jpg[/img]
Re: Rocks and Minerals Question Marathon
Posted: March 29th, 2013, 9:00 am
by piimasta314
is it (Click to Show Hidden Text) quartz (used in abrasives, glassmaking, some gemstones) and epidote (used in some gemstones...I don't know what else)
If it's not epidote it's olivine.
Re: Rocks and Minerals Question Marathon
Posted: March 29th, 2013, 7:27 pm
by inluvwyth_WANTED
Correct. Epidote and quartz.
Re: Rocks and Minerals Question Marathon
Posted: March 30th, 2013, 5:42 pm
by piimasta314
Sweet! Okay:
ID (Click to Show Hidden Text) [img]http://geology.com/gemstones/opal/white-opal-250.jpg[/img]
Re: Rocks and Minerals Question Marathon
Posted: March 30th, 2013, 8:44 pm
by vulcanologist1234
hmmm... (Click to Show Hidden Text) opal
Re: Rocks and Minerals Question Marathon
Posted: March 31st, 2013, 12:00 pm
by piimasta314
Correct!
Re: Rocks and Minerals Question Marathon
Posted: March 31st, 2013, 1:09 pm
by vulcanologist1234
identify (Click to Show Hidden Text) [img]http://www.mindat.org/photos/0652821001161909922.jpg[/img]