What Kind of Rock is this?

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Offline fandu

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What Kind of Rock is this?
« on: 05/08/2009 03:29:06 »
Found this rock in the backyard, just curious to what kind it is.


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Offline JimBob

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What Kind of Rock is this?
« Reply #1 on: 05/08/2009 04:25:12 »
looks at first glance like quartz. But it could be plagioclase feldspar. The only real crystal surfaces I can see are in the upper left part and it looks like quartz.
The mind is like a parachute. It works best when open.  -- A. Einstein

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Offline Bass

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What Kind of Rock is this?
« Reply #2 on: 05/08/2009 16:37:07 »
I agree, photo looks like quartz.  Can you give us any more information?  Can you scratch it with a knife? Where it's broken, is the break an irregular surface, or a flat surface?  Is the pink/red color just along fractures?
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Offline Karen W.

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What Kind of Rock is this?
« Reply #3 on: 05/08/2009 16:53:07 »
Found this rock in the backyard, just curious to what kind it is.


IT HAS A PRETTY AMETHYST COLOR UP TOP SIDE WAY...

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Offline fandu

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What Kind of Rock is this?
« Reply #4 on: 07/08/2009 01:04:35 »
It will not scratch with a knife, and I pressed down pretty hard. It has an irregular surface on one side and almost flat on the other.

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Offline JimBob

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What Kind of Rock is this?
« Reply #5 on: 07/08/2009 04:12:09 »
Actually, Karen, I think the color needs to be adjusted on your computer. It is probably rose quartz and probably from a pegmatite.
The mind is like a parachute. It works best when open.  -- A. Einstein

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Offline Bass

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What Kind of Rock is this?
« Reply #6 on: 07/08/2009 04:25:06 »
It will not scratch with a knife, and I pressed down pretty hard. It has an irregular surface on one side and almost flat on the other.

quartz it is then.
Old enough to have a grandson
Slow enough to study rocks
Thirsty enough to find a pub