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Post by MsAli on Jun 23, 2019 12:09:18 GMT -5
I collected this last time I was home. I love to snorkel the mine pits in Crosby, Mn. One has a "island" that has piles of rocks. It comes up from a depth of 25ft on one side and drops off to 75 on the other. You can actually stand/sit on the top of it. I've actually fished off it. I've found 2 pieces of it and this is from a slab I cut off Hope the link works   |
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Green MEJ
Jun 23, 2019 12:11:20 GMT -5
via mobile
Post by Pat on Jun 23, 2019 12:11:20 GMT -5
Wow!
Didn’t know it came in anything but red.
Thanks!
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Post by miket on Jun 23, 2019 12:17:21 GMT -5
Yes it worked
And that's one beautiful rock
Nice cab 😎
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Post by lpl on Jun 23, 2019 12:20:28 GMT -5
Fantastic piece!
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Post by Rockoonz on Jun 23, 2019 12:30:21 GMT -5
Nice
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Post by MsAli on Jun 23, 2019 12:45:18 GMT -5
Wow! Didn’t know it came in anything but red. Thanks! I didnt know this either until I started some research on MEJ. The color comes from the amount of iron, bacteria and oxygen at the time. The weird thing is it still has that MN smell (iron) even though I dont see any red in it |
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jasperfanatic
spending too much on rocks
Member since January 2019
Posts: 463
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Post by jasperfanatic on Jun 23, 2019 12:47:19 GMT -5
Beautiful!
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Post by stonemon on Jun 23, 2019 13:10:08 GMT -5
If I remember my mineralogy correctly, there are iron minerals that are green. Digging in to some dim memories but I seem to remember ferric iron is red/orange and ferrous iron shows up as a green mineral. I believe it has to do with the valence/charge on the particular assemblage.
Could explain the smell?
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Post by Rockindad on Jun 23, 2019 13:16:20 GMT -5
Wow! Didn’t know it came in anything but red. Thanks! I didnt know this either until I started some research on MEJ. The color comes from the amount of iron, bacteria and oxygen at the time. The weird thing is it still has that MN smell (iron) even though I dont see any red in it Very cool looking, but just when I think I am developing some ID skills  . I look at the slabs/rocks we have in addition to what I see here and and get to know them by their various features and then bam, someone posts a picture blowing up my idea of what such and such looks like. Will always keep this interesting, that's for sure! Al Check out this one: www.smithsonianmag.com/photocontest/detail/natural-world/mary-ellen-jasper-stromatolite/?ordering=-uploaded_at&filters= |
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Post by Rockoonz on Jun 23, 2019 13:24:32 GMT -5
Wow! Didn’t know it came in anything but red. Thanks! I didnt know this either until I started some research on MEJ. The color comes from the amount of iron, bacteria and oxygen at the time. The weird thing is it still has that MN smell (iron) even though I dont see any red in it Under the right conditions iron can turn things green as well. Edit: Looks like stonemon already said that... |
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Post by MsAli on Jun 23, 2019 14:45:06 GMT -5
If I remember my mineralogy correctly, there are iron minerals that are green. Digging in to some dim memories but I seem to remember ferric iron is red/orange and ferrous iron shows up as a green mineral. I believe it has to do with the valence/charge on the particular assemblage. Could explain the smell? Minnesota water and soil have a heavy Iron smell. I never noticed it growing up but when I go back home it is so strong to me. Almost every rock from there, especially Lakers smell like it |
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Post by MsAli on Jun 23, 2019 14:46:40 GMT -5
I didnt know about the iron minerals turning things green.
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NDK
Cave Dweller 
Member since January 2009
Posts: 9,440
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Post by NDK on Jun 23, 2019 15:17:05 GMT -5
That's an awesome cab Ali! It's like Gary (green) and Mary Ellen had a baby.
BTW, is that Joe Satriani playing on the video?
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Post by stardiamond on Jun 23, 2019 15:21:42 GMT -5
The red Mary Ellen cabs are green with envy.
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Post by MsAli on Jun 23, 2019 15:49:06 GMT -5
That's an awesome cab Ali! It's like Gary (green) and Mary Ellen had a baby. BTW, is that Joe Satriani playing on the video? It is one beautiful baby too! Meg Myers-Desire. There is strong language so listen with caution  |
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Jun 23, 2019 16:02:56 GMT -5
LoL I was way off on the music 😆
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pizzano
Cave Dweller
Member since February 2018
Posts: 1,390
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Post by pizzano on Jun 23, 2019 16:10:06 GMT -5
I collected this last time I was home. I love to snorkel the mine pits in Crosby, Mn. One has a "island" that has piles of rocks. It comes up from a depth of 25ft on one side and drops off to 75 on the other. You can actually stand/sit on the top of it. I've actually fished off it. I've found 2 pieces of it and this is from a slab I cut off Hope the link works That's some of the best photo's of your material you've taken so far........vid pretty good too.....getting the hang of it it seems.....! |
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fishnpinball
Cave Dweller
So much to learn, so little time
Member since March 2017
Posts: 1,491 
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Post by fishnpinball on Jun 23, 2019 16:11:57 GMT -5
Nice variation on classic material.
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Post by MsAli on Jun 23, 2019 16:17:56 GMT -5
I collected this last time I was home. I love to snorkel the mine pits in Crosby, Mn. One has a "island" that has piles of rocks. It comes up from a depth of 25ft on one side and drops off to 75 on the other. You can actually stand/sit on the top of it. I've actually fished off it. I've found 2 pieces of it and this is from a slab I cut off Hope the link works That's some of the best photo's of your material you've taken so far........vid pretty good too.....getting the hang of it it seems.....! THANK YOU! |
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Post by rockjunquie on Jun 23, 2019 17:04:52 GMT -5
Great job! I like how you captured the pattern.
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. I look at the slabs/rocks we have in addition to what I see here and and get to know them by their various features and then bam, someone posts a picture blowing up my idea of what such and such looks like. Will always keep this interesting, that's for sure!
