I went to Arizona and found this rock at the Wave Rock site. Could someone tell me what it is?
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| Author: | subby613 [ Mon Jun 25, 2012 9:28 pm ] | ||
| Post subject: | What is this rock? | ||
I went to Arizona and found this rock at the Wave Rock site. Could someone tell me what it is?
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| Author: | O_Stevens [ Mon Jun 25, 2012 10:03 pm ] |
| Post subject: | Re: What is this rock? |
subby613, Welcome to the forums. Difficult to say what kind of rock this is. I would either go for a extrusive lava (igneous) or for iron concretions in a sandstone (sedimentary with diagenetic overprint). Are there loose sand (quartz) grains to be seen. Does it scratch into metal? If so, it's probably a sandstone. |
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| Author: | Patrick898 [ Tue Apr 02, 2013 6:18 am ] |
| Post subject: | Re: What is this rock? |
A rock is formed naturally solid and the combination of two or more that two minerals. For instance, the granite is the aggregate of quartz, feldspar and biotite minerals. I think It is like sedimentary type of rock. |
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| Author: | WWLittle [ Mon Jan 06, 2014 12:38 am ] |
| Post subject: | Re: What is this rock? |
It's hard to tell without a little more magnification, but it appears to be a humanized sandstone. That is a sandstone composed of quartz and maybe feldspar grains that once had a clay-rich matrix, It is common for such a matrix, and the feldspar grains, to alter to hematite upon weathering. |
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