RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 2, 2024 18:04:36 GMT -5
I think it's time to make a stromatolite thread. I've found a few specimens and there might be others who have insights and photos to share, so let's see what you've got and tell us what you know about the subject!
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 2, 2024 18:06:24 GMT -5
Here's my buddy Craig with the largest we've ever found. ![](https://res.cloudinary.com/drums6h3y/image/upload/v1719961575/kmary4ydrgifrmtviz2w.jpg)
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Post by vegasjames on Jul 2, 2024 19:28:16 GMT -5
One of my stromatolites from Southern Nevada. ![](https://res.cloudinary.com/dyvr1oalk/image/upload/v1719966387/odnno34hvwf0hqxysxff.jpg) ![](https://res.cloudinary.com/dyvr1oalk/image/upload/v1719966387/c1z6a3gccdyx1jqdkokw.jpg)
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Post by rockjunquie on Jul 2, 2024 19:41:01 GMT -5
Mary Ellen "Jasper" Stromatolite from MN.
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Post by cabby on Jul 2, 2024 19:46:54 GMT -5
Mary Ellen "Jasper" Stromatolite from MN. I’m waiting to find a good one to cab! Only found tiny pieces in my yard so far. I KNOW they are around, just haven’t dug them up yet 😆
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,000
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Post by gemfeller on Jul 2, 2024 20:15:40 GMT -5
Here's a "glamour" shot of another Mary Ellen cab. Beautiful stuff but it usually turns out pretty dark in images. The lighting on this cab perked it up. ![](https://rockshow.rocktumblinghobby.com/upload/2024/07/02/20240702181147-c087b34d.jpg)
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 2, 2024 20:30:14 GMT -5
Here's a "glamour" shot of another Mary Ellen cab. Beautiful stuff but it usually turns out pretty dark in images. The lighting on this cab perked it up. ![](https://rockshow.rocktumblinghobby.com/upload/2024/07/02/20240702181147-c087b34d.jpg) That's amazingly beautiful. I didn't know Mary Ellen is stromatolite. I guess they come in many sizes and configurations.
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,000
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Post by gemfeller on Jul 2, 2024 20:55:59 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 2, 2024 22:26:44 GMT -5
Rick, that is absolutely stunning. Thanks.
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Post by cabby on Jul 2, 2024 22:32:37 GMT -5
Mary Ellen is one of my favorite stones! Can come in so many different patterns and colors, too, except only certain patterns get the name (even if same minerals and strom but dif pattern). I was heartbroken when I cut open a rock that I was SO sure is a mary Ellen but didn’t have the right pattern inside.
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Post by Pat on Jul 2, 2024 22:41:36 GMT -5
Rick, that is absolutely stunning. Thanks. That beauty looks like shades of Van Gogh. Thanks.
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ThomasT
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Post by ThomasT on Jul 3, 2024 8:43:55 GMT -5
We have ancient Stromatolite fossils in a few locations in Tennessee.
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ThomasT
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Post by ThomasT on Jul 3, 2024 10:00:34 GMT -5
I believe the fossilized stromatolites are abundant in the form of nodules of chert both embedded in the ancient limestone and in some areas of the degraded limestone clay here.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 3, 2024 12:31:42 GMT -5
I believe the fossilized stromatolites are abundant in the form of nodules of chert both embedded in the ancient limestone and in some areas of the degraded limestone clay here. I'm learning that they come in quite a variety of shapes, sizes and degrees of silicification. It can be hard to recognize one when it's in front of you and it looks like another rabbit hole I'm getting into.
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Post by amygdule on Jul 3, 2024 18:59:42 GMT -5
Some Old Stock from an Old Estate. This was a melon sized rock that I had cut into a 3.75" sphere. I was told it was Stromatolite. ![](https://res.cloudinary.com/drqxosbjp/image/upload/v1720051054/yq4vu2coyzc2hvo8vmkh.jpg) ![](https://res.cloudinary.com/drqxosbjp/image/upload/v1720051073/rqaaz4iu786ahshojqqz.jpg) ![](https://res.cloudinary.com/drqxosbjp/image/upload/v1720051082/kc89mm6zbrdtcfgyjhri.jpg) ![](https://res.cloudinary.com/drqxosbjp/image/upload/v1720051090/ox4rbt7m7xl1u0seoqou.jpg)
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Post by rockjunquie on Jul 3, 2024 19:05:16 GMT -5
Very nice!!
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 9, 2024 13:02:28 GMT -5
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Post by Starguy on Jul 9, 2024 14:07:04 GMT -5
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ThomasT
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Post by ThomasT on Jul 9, 2024 14:11:51 GMT -5
Yes, ancient algae or cyanobacterial mats that bubbled up on ancient sea floors and silicified.
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tribeunited
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Post by tribeunited on Jul 9, 2024 14:22:04 GMT -5
ThomasT - Is that what makes a stromolite? I have found things labeled stromolite, I thought it was another variety of jasper or agate.
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