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Crazy Diamond
Fairly sure this is a Coprolite found while walking on the Island of Arran Scotland, It seems to have bone inclusions, photographed wet to show as found, 9cm long by 6cm  at the widest point and tapered. Any feedback gratefully received._DSC0441.jpg  _DSC0440.jpg 
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Brittle Star
Hi

Not sure what it is. Please put a scale or ruler on your photos. Also give a specific location.

To me it looks like a rock with Calcite veins.
JW

 Never ask a star fish for directions
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prep01
I don't think there are any sedimentary rocks on Arran! This looks like a quarz pebble withmineral viening. Test: Can you scatch either part with a steel pbject - if no, then both Quarz.
Colin Huller
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MicroFossilMan
prep01 wrote:
I don't think there are any sedimentary rocks on Arran!

Sure there are! Devonian through to the Triassic as far as I remember. Much of the southern part of the island is "classic" UK Permo-Trias desert deposits. Not sure if there's any younger sediments though.

But, yes, I'd go with a quartz pebble with some sort of mineral veining ... doesn't look quite right for calcite, but then mineral identification sometimes ain't easy!
MFM
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Crazy Diamond
I found this on the beach on the East side "Corrie" opposite the mainland, I know there have been Dinosaur foot prints over by Blackwaterfoot from someone from Glasgow University the white deposits also have a light brown outer colour,as you can tell I am not an expert like some of you guys,thanks for all the feedback.
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prep01
Hi MFM, I stand (or rather sit) corrected about the sed. exposures.
We will know about the mineral(s) when the results of the hardness test are given.
Colin Huller
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Dirty Pete
I reckon the critical factor here are the 'inclusions' of which I see none in the pics. I see a turd coloured fractured/veined mineralised pebble.

Pete
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