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Need info on this phenomenon - star shaped pyrite fossils in shale above coal seam

0 votes

alt textGood day -

We found star shaped pyrite fossils in a shale layer directly above a coal seam (South Africa). These fossils are in a distincly star shaped form and differ in size. Some have 4 and some 6 "tentacles". These fossils were clustered in groups. Have never seen this shape before. Can anybody inform me what possible could have been fossilied in this case? Regards

asked Jan 8, 2015 by lelanie (160 points)

Hi Hershel -

I am struggling to upload the picture. Please provide an e-mail address if you comfortable enough to do so. I will forward it via e-mail. Regards Lelanie

5 Answers

0 votes

Can you please post some pictures?

answered Jan 9, 2015 by hershel (51,840 points)
0 votes

Would be very interesting to see...

answered Jan 9, 2015 by Weasel (56,340 points)
0 votes

In the space just above ^^^^^^^^^^^^the box your typed text appears there is a square icon which when pressed lets you insert an url for your image from most devices.^^^^^^^you can post it in this thread or edit your first post. Press the sqare icon which looks like a TV or a polaroid. It will give you a prompt.alt text

Mine says choose file or type in url. Good luck. Purple quartz is amethyst. Thin white layer is agate. Haven't figured out, the red and black. I think the host rock is basalt but...

answered Jan 9, 2015 by Weasel (56,340 points)
0 votes

Guys -

No ideas around the "star shaped" pyrite phenomena?

Regards Lelanie

answered Jan 22, 2015 by lelanie (160 points)
0 votes

Looks like they may have formed with some organic process. Are you sure its pyrite? I have never quite seen a pyrite in such a formation...

answered Jan 23, 2015 by hershel (51,840 points)

Yip - it definitely is pyrite to my knowledge! Had a look at "sand dollars", "pyrite suns", but this is something different. Was thinking it might be some seed pod?!? Regards L

I am interested, Did you find out the name of the star shaped? Mineral?