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I found this rock or mineral in our backyard, and I'm having a hard time trying to figure it out. Does anyone know exactly what this thing isenter image description here

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    $\begingroup$ That's a nice thing to find in your backyard... $\endgroup$ – Gimelist Jan 15 '16 at 11:33
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    $\begingroup$ Looks like rose quartz from central/ Black Hills near Custer/Pringle SD. $\endgroup$ – Gary Kindel Mar 29 '16 at 0:12
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It certainly looks like rose quartz, but best to try a quick test. Chip off a small flake and see if it is hard enough to scratch glass. If it does, then it's almost certainly quartz. The translucence and vitreous fracture are also giveaways.

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  • $\begingroup$ +1 on the vitreous. There should also be some concoidal fracture. $\endgroup$ – winwaed Jan 15 '16 at 14:02
  • $\begingroup$ I agree with Gordon Stanger. $\endgroup$ – user5434678 Jan 17 '16 at 10:22
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Looks like rose quartz. I have a smaller version of this but the color is not as consistent as yours. here is an image of rose quartz

rose quartz

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Pretty nice chunk of rose quartz. It is probably from some interesting pegmatite vein, where could be more interesting minerals or even pockets with crystals.

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