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Old 02-09-2010, 10:30 AM   #8
metageologist
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Quote:
Originally Posted by xev11 View Post
Is this rock safe for aquarium use? I found it near my apartment building. I googled rock types and this looks sort of like Quartz diorite.
your rock is actioly a quarzite with what apears to be a mica band making what is comonly called the manhatan shist.
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