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Old 04-09-2010, 10:43 AM   #1
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Please help me identify my rocks!

Hey guys, I went on a rock finding mission the other day, and found two types of rocks. I want to know if I can use them. I did the vinegar test and it didn't bubble. Here are the pics..







Thanks in advance!
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Old 04-09-2010, 10:52 AM   #2
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Not 100% sure, but I think most of em are slate.
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Old 04-09-2010, 11:05 AM   #3
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Probably fine for f/w, but I would not use them in saltwater for fear of them leaching out metals.
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Old 04-09-2010, 11:08 AM   #4
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Looks like slate or shale, will be fine for fw.
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Old 04-09-2010, 11:18 AM   #5
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some of it looks like sandstone too... there's one black piece that looks like a type of sandstone i have in my tank.
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Old 04-11-2010, 11:23 PM   #6
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Originally Posted by mfdrookie516 View Post
some of it looks like sandstone too... there's one black piece that looks like a type of sandstone i have in my tank.
Sorry but that's doubtful. All of the "black" stones are the same, and all of the "tan" stones are the same. So if one black stone is slate, the others are the same. Thanks though, I really appreciate it.
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Old 04-13-2010, 12:18 PM   #7
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I agree with everyone else looks like sandstone & slate. Should be ok in FW tank as i have both types in mine.
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Old 04-13-2010, 12:48 PM   #8
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Im with A1, it looks like black shale.....or slate
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Old 04-13-2010, 05:49 PM   #9
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Idk where you all are seein any sandstone lol. No offense. I'm still unsure how to tell the dif between shale and slate lol.
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Old 04-13-2010, 05:56 PM   #10
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Shale is a lot more flakey and thinner pieces can sometimes be broken by hand, when I get home ill post a pic.
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