tag:blogger.com,1999:blog-3927143376177050152.post2409026121187948143..comments2024-03-28T10:59:20.121-04:00Comments on Louisville Fossils and Beyond: More Devonian Coral FindsMichael Popphttp://www.blogger.com/profile/16741723962997816729noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3927143376177050152.post-30194182369291352922009-07-04T15:08:29.211-04:002009-07-04T15:08:29.211-04:00Yeah I think there is some chalcopyrite in there. ...Yeah I think there is some chalcopyrite in there. The pieces looking a big like brass or bronze might be it. It's really not so easy on a foto.Mathiashttps://www.blogger.com/profile/02950872285924945887noreply@blogger.comtag:blogger.com,1999:blog-3927143376177050152.post-25382895937204736962009-07-04T12:40:37.082-04:002009-07-04T12:40:37.082-04:00Thank you for the feedback.
Could it be Chalcopyr...Thank you for the feedback.<br /><br />Could it be Chalcopyrite (CuFeS2) with the copper content causing the greenish color?<br /><br />The limestone contains a Silurian period colonial coral that is more apparent when the specimen is wet.Michael Popphttps://www.blogger.com/profile/16741723962997816729noreply@blogger.comtag:blogger.com,1999:blog-3927143376177050152.post-33454885910927224462009-07-02T11:44:10.757-04:002009-07-02T11:44:10.757-04:00The limestone around it looks recrystalised. The m...The limestone around it looks recrystalised. The mineral might be marcasite - though in limestones I am always thinking about some kind of hydrothermal mineralisation of Galenite and Sphalerite as it exist in MVT deposits.Mathiashttps://www.blogger.com/profile/02950872285924945887noreply@blogger.com