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Showing results for tags 'siliceous'.
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Hi Guys, My son's friend asked me to id this and I'm embarrassed to say that I'm stumped! It's siliceous, it was found in UK and its owner has suggested it could be from Whitby (or less likely from North Cornwall or the Isle of Man). It's intriguing me because if you look through the little holes you can see daylight suggesting to me that the specimen might be fossil and not just a strange depositional feature. I'm convincing myself that I can see five-fold symmetry and that it looks like some sort of echinoid but I might be way off the mark. If you think it's depositional or diagenetic can you explain to me how you think it might have formed? Thanks for your time. Top view. There are holes or pairs of holes running down both sides and you can see daylight if you look through! Side view showing horizontal holes running through the specimen. Inside of the holes appears to be crystalline silica or some grains of silica. View of the other side, showing similar holes which go straight through Bottom view