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 Jun 26, 2011 20:53:42 GMT -5
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Post by paulshiroma on Jun 26, 2011 22:39:13 GMT -5
It's interesting whatever it is. Sorry, Daniel, I'm pretty poor at the identification side of things Found in the backyard, too, that's cool!
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Post by tanyafrench on Jun 27, 2011 7:54:11 GMT -5
Wow, rockhounding in the backyard, that is just too cool. Not the case in Ohio. The rock is beautiful! Tanya
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Post by johnjsgems on Jun 27, 2011 8:03:31 GMT -5
Stalagmites will be limestone. Not agate.
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Post by Toad on Jun 27, 2011 9:06:26 GMT -5
Stalagmites can be many minerals can't they? I'm pretty sure I've seen them made from rhodocrosite and malachite. Never heard of anything as hard as agate though
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Post by jakesrocks on Jun 27, 2011 9:28:23 GMT -5
From the markings showing, I'd say possibly a petrified fern of some sort, but not a stalagmite.
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Post by johnjsgems on Jun 27, 2011 9:29:38 GMT -5
Which is why Rhodo is soft.
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<'))))>< Fish
Cave Dweller
Gone Fishing
Member since April 2005
Posts: 1,841
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Post by <'))))>< Fish on Jun 27, 2011 11:01:19 GMT -5
Cut it open. This is a cab made from a stalagmite, Kokoweef..
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Post by johnjsgems on Jun 27, 2011 11:13:47 GMT -5
I've been to Kokoweef and got to tour the hunting for lost river of gold tunnels. Kokoweef looks exactly like rhodochrosite only honey tones.
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Post by Toad on Jun 27, 2011 11:30:54 GMT -5
Wow. Incredible patterns in that cab.
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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 Jun 27, 2011 12:14:32 GMT -5
I thought stalagmites could also be chalcedony. Maybe it is a fossil. I should have taken a pic of the other side of the stone and the "bottom". I'll do that.
Tanya, I'm in Minneapolis, so I'm looking for Lake Superior Agates of course, and I'm having some luck, but I've also found a lot of moss agate and flint (a couple banded) and few pieces of red jasper and a couple carnelian nodules. So far I've collected about 6 or 8 lbs of the various chalcedonys. A couple days ago I "lifted" a fist-sized junk of reddish-orange moss agate from the landscape rock in a parking lot "island" at a nearby grocery store. My girlfriend says I have a problem.
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Post by johnjsgems on Jun 27, 2011 21:02:02 GMT -5
At the nearest caverns to me they said the formations are caused by water running over limestone and dripping from ceiling. the lime rich mineral is deposited as the water evaporates forming stalagtites (from ceiling down) or stalagmites from floor up. Many times they form in concentric rings but weird random forms happen as well. Kokoweef collecting is done from a tailings pile outside the mine. All the beautiful cave formations were shot down during WWII to mine dolomite found behind it. We were supposed to get a tour of an untouched cavern but a fairly big quake shook a few down and they were worried someone would get hurt.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,688
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Post by Fossilman on Jun 28, 2011 12:43:06 GMT -5
Looks agate to me.................Cut it.......
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,472
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Post by Sabre52 on Jun 28, 2011 19:29:58 GMT -5
Might be an agate pseudomorph after coral....Mel
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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 Jun 29, 2011 0:08:51 GMT -5
The other side of the stone -- which flashes nascent druzy: And this is the bottom:
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Post by jakesrocks on Jun 29, 2011 2:30:35 GMT -5
I think Mel is on the right track. It looks like fossilized something or other, but not a stalagmite.
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MikeS
fully equipped rock polisher
Member since January 2009
Posts: 1,081
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Post by MikeS on Jun 29, 2011 20:00:28 GMT -5
Might be an agate pseudomorph after coral....Mel that was my thought as well, and the appearence is probably due to water erosion on it....
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agatemaggot
Cave Dweller
Member since August 2006
Posts: 2,195
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Post by agatemaggot on Jul 5, 2011 20:11:26 GMT -5
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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 Jul 5, 2011 21:31:04 GMT -5
To me it looks like limestone stalagmite that might have been agatized after an underground river washed it out of the cave and it later got deposited under mud or in a bog... assuming such a thing were actually possible.
If it's a fossil, then the apparent "erosion", if it is erosion, would have occurred before it was agatized I should think.
Maybe it's alien.
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Post by tandl on Jul 11, 2011 10:23:59 GMT -5
My first thought was fernwood too , it is so quartz replaced, hard to tell from the pic , could be coral .
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