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Post by Donnie's Rocky Treasures on Aug 2, 2012 7:51:07 GMT -5
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Post by 3rdrockfromthefun on Aug 2, 2012 8:59:05 GMT -5
Your "Dumortierite?" looks like some of my Montana agate (easier to tell when you can see the whole rock but that's no guarantee) - I have some that looks like agatized oatmeal as well - yum! The rest are vexers to me :2cents:
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Post by geoff on Aug 2, 2012 9:37:21 GMT -5
I don't think it's Dumortierite. I could be wrong though.
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itsandbits
freely admits to licking rocks
Member since March 2012
Posts: 825
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Post by itsandbits on Aug 2, 2012 9:41:20 GMT -5
the top one looks like you got into an old construction site :<) the second one looks like calcite on the one you call? granite, I would say looks like some agate of some type? Don't know about any for sure but they sound like you have the rest right
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deedolce
fully equipped rock polisher
Member since October 2006
Posts: 1,828
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Post by deedolce on Aug 2, 2012 9:46:42 GMT -5
Wow, have no clue to most, but the last is carnelian!
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Minnesota Daniel
freely admits to licking rocks
A COUPLE LAKERS
Member since August 2011
Posts: 891
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Post by Minnesota Daniel on Aug 2, 2012 12:33:05 GMT -5
Magnetite (lodestone) should streak black, hematite streaks red, so if it streaks black, it's probably magnetite with (I agree) calcite crystals.
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rockingthenorth
fully equipped rock polisher
Member since January 2012
Posts: 1,637
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Post by rockingthenorth on Aug 2, 2012 15:33:58 GMT -5
the first one looks like a comglomerate
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Aug 3, 2012 13:28:08 GMT -5
I'm with itsandbits on the first one, looks like a chunk of something manmade (with other rock in it)
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Post by FrogAndBearCreations on Aug 3, 2012 13:39:18 GMT -5
the first one kinda of looks like man made stuff called terrazo
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