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Post by noobiehound26 on Jan 12, 2009 0:47:59 GMT -5
Hi I'm new to rock hounding and still feeling my way around. These are from Laurens, SC.
I found these in a pond site near my house. Each is around an Inch long. Could the red be Garnet? No clue...
 Also no clue.. Any guesses? Same as above. Different angle.
[glow=red,2,300]Thanks in advance! ;D[/glow]
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Post by dr00bie on Jan 12, 2009 9:05:25 GMT -5
All of them look like quartz to me, the red is just iron staining.
But it seems you are in a good spot, Laurens has some corundum deposits, so go find them!
Drew
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Post by sandalscout on Jan 12, 2009 22:04:28 GMT -5
Yeah, I have to agree, the fractures are concoidal, no cleavage really, I think it's quartz as well.
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Post by gsellis on Jan 12, 2009 22:48:42 GMT -5
Not so sure it is quartz. Where is your backyard? They can also be very indistinguished agate. I have a block like it (but more distinguished) that I use on my diamond wheels to break them in. The luster of the chips and lack of concentric fractures makes me think it might be agate instead of quartz. Does not look grainy enough to be quartzite.
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Post by sandalscout on Jan 13, 2009 7:47:24 GMT -5
gsellis may be correct, I should have specified more, I believe it's some form of quartz, agate is a microcrystalline form of quartz.
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Post by gemlover on Jan 20, 2009 3:05:28 GMT -5
If you handed the sample to me, my first response would be quartzite. I see nothing in the picture to change that, however, I am the curmudgeon, I do not like identifying gems, minerals or rocks from only a picture. Can you determine hardness? Streak? fracture/cleavage?
john
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Post by eriktheawful on Feb 2, 2009 9:05:55 GMT -5
Looks like quartzite colored by iron on the sandstone before it was metamorphed. Anyone seen the blue quartzite stained by nickel?
If it fractures like glass it is probably quartz if it fractures straight through the grains, it is probably quartzite.
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