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Old 08-15-2012, 04:28 AM   #1
Colorful
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rock id


anyone know what type of rock this is? Found it in my yard and i want more . Thanks in advance.
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Old 08-15-2012, 05:09 AM   #2
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looks like granite to me.
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Old 08-18-2012, 12:32 AM   #3
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Is graphite inert?
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Old 08-18-2012, 12:47 AM   #4
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Quote:
Originally Posted by Colorful View Post
Is graphite inert?
not graphite- that's in pencils. granite, like fancy rockwork and countertops. if you're wondering if it's inert, soak it in a bucket of water for a few weeks and check the parameters of the water as you go. probably distilled water would be best, so it has a low KH and GH
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Old 08-18-2012, 01:58 AM   #5
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Oh sorry my phone autocorrect'd. I poured some ph down on it and it hasn't fizzed, is it safe to assume it's inert?
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Old 10-14-2012, 03:21 AM   #6
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By the green tone it looks like it has chlorite in it. It depends if the green is from plant or staining or if its the color of the minerals in it. If it is grey after rinsing it off with some cloudy grey crystals than this is most likely has quartz and the rock would be a granite. Granite vary in composition, they most contain quartz but there could be plagioclase, orthoclase, biotite and many other minerals in it.
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