Pleuromya Posted May 4, 2020 Share Posted May 4, 2020 Hello, I've been intrigued by this for days, and I am wondering if it is a fossil or not? Found in Northamptonshire, UK, which is mostly Jurassic in age. I've found Bivalves, belemnites and some gastropods in the same area. Sorry there's no scale, its about 5mm. Thanks. Link to comment Share on other sites More sharing options...
Pleuromya Posted May 4, 2020 Author Share Posted May 4, 2020 Link to comment Share on other sites More sharing options...
Pleuromya Posted May 4, 2020 Author Share Posted May 4, 2020 Link to comment Share on other sites More sharing options...
digit Posted May 4, 2020 Share Posted May 4, 2020 Looks like a silica-rich mineral inclusion to me but we'll see what our members think who are from that area and are more familiar with the geology. Cheers. -Ken 2 Link to comment Share on other sites More sharing options...
grandpa Posted May 4, 2020 Share Posted May 4, 2020 8 minutes ago, digit said: a silica-rich mineral inclusion I'm thinking along the same lines. I'd add calcite, gypsum and barite as possible sedimentary mineral possibilities, depending on the geology of the area. 1 Link to comment Share on other sites More sharing options...
Pleuromya Posted May 4, 2020 Author Share Posted May 4, 2020 25 minutes ago, digit said: Looks like a silica-rich mineral inclusion to me but we'll see what our members think who are from that area and are more familiar with the geology. Cheers. -Ken 15 minutes ago, grandpa said: I'm thinking along the same lines. I'd add calcite, gypsum and barite as possible sedimentary mineral possibilities, depending on the geology of the area. Thanks. Link to comment Share on other sites More sharing options...
Planko Posted May 4, 2020 Share Posted May 4, 2020 I'll add calcite 1 Link to comment Share on other sites More sharing options...
Plax Posted May 5, 2020 Share Posted May 5, 2020 I think I see the radiating lines of a belemnite cross section. 1 Link to comment Share on other sites More sharing options...
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