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Re: Rocks and Minerals B/C
Posted: November 10th, 2013, 10:01 am
by darkdeserthighway
ali941 wrote:darkdeserthighway wrote:ali941 wrote:
Last year was my first year in SciOly, and at my first invitational, there was apparently a decent-sized piece of uncut, unpolished diamond. I say apparently because it was at a station with four other clear-white minerals and I was unable to identify it.
Was anything provided at that station to help with ID?
I mean, there were distinct differences in the samples, my partner and I just weren't prepared enough to recognize it. Plus, we did bring our own magnifying glass, which was somewhat helpful.
I mean, was glass/streak plate provided?
Re: Rocks and Minerals B/C
Posted: November 10th, 2013, 11:47 am
by ali941
darkdeserthighway wrote:ali941 wrote:
I mean, there were distinct differences in the samples, my partner and I just weren't prepared enough to recognize it. Plus, we did bring our own magnifying glass, which was somewhat helpful.
I mean, was glass/streak plate provided?
From what I remember, yes. Most stations had streak plates.
Re: Rocks and Minerals B/C
Posted: November 12th, 2013, 7:04 pm
by darkdeserthighway
oh, ok
Re: Rocks and Minerals B/C
Posted: December 1st, 2013, 4:52 pm
by thedarknight
Does anybody who has done this event before know how "economic importance" will be on the exam? Would this be uses of the rock/mineral on the test or something else?
Re: Rocks and Minerals B/C
Posted: December 1st, 2013, 4:55 pm
by hotchocolate123
Economic Importance is usually about how the rock/mineral is used and how it's important to the economy and our lives. For example, one of the economic importance's of bauxite is that it is the ore of aluminum.
Re: Rocks and Minerals B/C
Posted: December 1st, 2013, 4:58 pm
by thedarknight
Makes sense...and also what would "clues to past environments" entail of?
Re: Rocks and Minerals B/C
Posted: December 1st, 2013, 5:03 pm
by hotchocolate123
It means that like some minerals/rocks provide clues as to how the land was thousands of years ago. For example, specific types of coal may indicate that the land was once a dense swamp filled area.
Rocks and Minerals B
Posted: December 5th, 2013, 11:36 am
by 19puppylover
Why is Goethite and Limonite together on the List for 2014, but are pretty much completely different????
Re: Rocks and Minerals B/C
Posted: December 7th, 2013, 9:02 am
by maxiscool1127
19puppylover wrote:Why is Goethite and Limonite together on the List for 2014, but are pretty much completely different????
They have pretty much the same composition....
Re: Rocks and Minerals B/C
Posted: December 7th, 2013, 10:37 am
by Flavorflav
In fact, Limonite is no longer an actual mineral but a term used for a group of minerals, of which Goethite is the most common.