Osh Posted November 11, 2022 Share Posted November 11, 2022 Hello, I would love to know from you experts that can identify these different stones I have in my private land. Thank you ? Link to comment Share on other sites More sharing options...
Hardtimehermit Posted November 11, 2022 Share Posted November 11, 2022 looks like calcite to me. ? Link to comment Share on other sites More sharing options...
Osh Posted November 11, 2022 Author Share Posted November 11, 2022 Most of it indeed look like calcite with different colours of crystals but never saw the pure black volcanic 'melted like' rocks (last pic. with no crystals) Thank you All the best Link to comment Share on other sites More sharing options...
Jeff McClendon Posted November 11, 2022 Share Posted November 11, 2022 The light colored crystals appear to be mostly quartz and some calcite which can both form in a near volcanic rocks. 1 Link to comment Share on other sites More sharing options...
Osh Posted November 12, 2022 Author Share Posted November 12, 2022 Ok, thanks a lot Link to comment Share on other sites More sharing options...
Valens Legacy Posted November 12, 2022 Share Posted November 12, 2022 Looks like quartz to me. Link to comment Share on other sites More sharing options...
jasong Posted November 19, 2022 Share Posted November 19, 2022 Looks like ore. The black botyroidal/melty looking stuff could be psilomelane, a manganese ore. But it could be a number of different things too, you'd have to do some basic tests to find out. Psilomelane can actually make some really cool specimens. I've run into it a few times and grabbed some chunks for my display case but everything I have is in boxes right now in storage. Link to comment Share on other sites More sharing options...
Osh Posted November 20, 2022 Author Share Posted November 20, 2022 It does looks very similar to Psilomelane pictures. I have so many of them in different sizes and unique cool shapes. Thanks for the info. I will do some more research. In some of the other crystal stones i was surprised to find small black shiny crystals next to the others like in this pic. Is this a common thing to see? ? Link to comment Share on other sites More sharing options...
jasong Posted November 20, 2022 Share Posted November 20, 2022 Crystals like that can be a number of things - it can be one mineral coating another, it can be one mineral cast into a shape by a now missing 2nd surrounding mineral, or it can be the actual crystalline form of a specific mineral. What I would do first is determine if you have quartz or calcite by trying to scratch the clear/white bits them with a common nail on your sample. Determining if these samples are primarily evaporite in origin or something more igneous will eliminate some potential candidates. Again, various ore type minerals come to mind at first - tetrahedrite, magnetite, etc. But I don't know and you'll have to research/test unless someone here recognizes something. I would try to find some data on specific crystalline angles by mineral (or just browse through minerals with triangluar form/cross section for a rougher idea). It's beyond what I know by memory so I'd have to google it, but at that point, you might as well google it instead and learn how to ID stuff for the future too. 1 Link to comment Share on other sites More sharing options...
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