Sketch Posted July 10, 2021 Share Posted July 10, 2021 Can someone help me to identify this possibily meteorite or meteowrong? 20210710_110318.mp4 20210710_110318.mp4 20210710_110318.mp4 Quote Link to comment Share on other sites More sharing options...
Morlock Posted July 10, 2021 Share Posted July 10, 2021 It's not a meteorite but hard to tell exactly what it is Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 10, 2021 Author Share Posted July 10, 2021 Exactly I also thought that there are very less chances but then too it looked stranger than other rocks. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 10, 2021 Author Share Posted July 10, 2021 Actually there were some sparkling objects visible on the surface of this rock. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 10, 2021 Author Share Posted July 10, 2021 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 20210710_104537.mp4 Actually there were some sparkling objects visible on the surface of this rock. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 10, 2021 Author Share Posted July 10, 2021 Quote Link to comment Share on other sites More sharing options...
Nugget Shooter Posted July 10, 2021 Share Posted July 10, 2021 Do a streak test on unglazed porcelain... Let us know the color Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 11, 2021 Author Share Posted July 11, 2021 The streak was a very weak and of a grayish colour although I think this rock is an eclogite. Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted July 11, 2021 Share Posted July 11, 2021 Is it magnetic? Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 11, 2021 Author Share Posted July 11, 2021 This rock shows magnetism but very weak. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 11, 2021 Author Share Posted July 11, 2021 (edited) there were some red and green minerals in this rock so I thought it would be an eclogite. And I live near to beach. Edited July 11, 2021 by Sketch Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted July 11, 2021 Share Posted July 11, 2021 24 minutes ago, Sketch said: This rock shows magnetism but very weak. If the stone shows magnetism,has a grey streak and does not have visible metal flakes it is an terrestrial iron mineral. The iron in meteorites is not mineral. It is free metallic iron. You have an iron rich terrestrial stone containing the mineral magnetite. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 11, 2021 Author Share Posted July 11, 2021 Or I think it is a type of metamorphic rock. Quote Link to comment Share on other sites More sharing options...
Morlock Posted July 11, 2021 Share Posted July 11, 2021 8 hours ago, Sketch said: Or I think it is a type of metamorphic rock. Sometimes it's hard to indentify rock and minerals by photos alone. It's always best to have the specimen in hand but even then...I still get stumped at times. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 11, 2021 Author Share Posted July 11, 2021 Dosen't it looks like eclogite? Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted July 11, 2021 Share Posted July 11, 2021 35 minutes ago, Sketch said: Dosen't it looks like eclogite? It looks like an iron rich sedimentary metamorphic to me. You may be able to classify it further with microscopic analysis. But there is one question we can answer without a doubt. It is not a meteorite 2 Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 12, 2021 Author Share Posted July 12, 2021 That's sure Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 12, 2021 Author Share Posted July 12, 2021 it somewhat looks like this right? Quote Link to comment Share on other sites More sharing options...
Nugget Shooter Posted July 12, 2021 Share Posted July 12, 2021 No my friend in my opinion more like this, as Bob said, this is tumbled Magnetite and it also has some of the host rock still Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 14, 2021 Author Share Posted July 14, 2021 But still magnetite leaves black streak . Can a magnetite leave this streak too?I want to know🤔 Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted July 14, 2021 Share Posted July 14, 2021 5 hours ago, Sketch said: But still magnetite leaves black streak . Can a magnetite leave this streak too?I want to know🤔 If it is magnetic it contains iron. If that iron is not free metallic iron it is mineral iron. If the iron is mineral iron it is not a meteorite. Streak is subjective to the other minerals present. A pure chunk of magnetite will streak dark grey. But a rock containing magnetite will leave a streak that is a combination of all the minerals that contact the streak plate So yes, a stone containing magnetite can definitely leave a streak like that. Magnetite does not leave a black streak. It can streak any shade of grey from black to very light grey. Hematite streaks any shade of red from bright red to light pink. Again this depends on how much iron mineral is in the rock and how much is coming into contact with the streak plate. Your rock is a granular combination of many minerals. When you grind it across the tile it is leaving the streak of many minerals. Not only the iron. Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 14, 2021 Author Share Posted July 14, 2021 (edited) I am not saying that it is a meteorite but I was saying rather than a magnetite it seems other but I didn't know what it was . However the conclusion goes in your favour. 2 hours ago, Bedrock Bob said: If it is magnetic it contains iron. If that iron is not free metallic iron it is mineral iron. If the iron is mineral iron it is not a meteorite. Streak is subjective to the other minerals present. A pure chunk of magnetite will streak dark grey. But a rock containing magnetite will leave a streak that is a combination of all the minerals that contact the streak plate So yes, a stone containing magnetite can definitely leave a streak like that. Magnetite does not leave a black streak. It can streak any shade of grey from black to very light grey. Hematite streaks any shade of red from bright red to light pink. Again this depends on how much iron mineral is in the rock and how much is coming into contact with the streak plate. Your rock is a granular combination of many minerals. When you grind it across the tile it is leaving the streak of many minerals. Not only the iron. Edited July 14, 2021 by Sketch Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 14, 2021 Author Share Posted July 14, 2021 2 hours ago, Bedrock Bob said: If it is magnetic it contains iron. If that iron is not free metallic iron it is mineral iron. If the iron is mineral iron it is not a meteorite. Streak is subjective to the other minerals present. A pure chunk of magnetite will streak dark grey. But a rock containing magnetite will leave a streak that is a combination of all the minerals that contact the streak plate So yes, a stone containing magnetite can definitely leave a streak like that. Magnetite does not leave a black streak. It can streak any shade of grey from black to very light grey. Hematite streaks any shade of red from bright red to light pink. Again this depends on how much iron mineral is in the rock and how much is coming into contact with the streak plate. Your rock is a granular combination of many minerals. When you grind it across the tile it is leaving the streak of many minerals. Not only the iron. Yes I saw that it was having combination of many red and green minerals Quote Link to comment Share on other sites More sharing options...
Sketch Posted July 14, 2021 Author Share Posted July 14, 2021 Please can you explain me why all magnetites have a black shiny crust on its surface ? Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted July 14, 2021 Share Posted July 14, 2021 43 minutes ago, Sketch said: Please can you explain me why all magnetites have a black shiny crust on its surface ? No I can't. Because all rocks that contain magnetite don't have a black shiny crust. Most rocks that contain iron, manganese and other similar minerals have a dark rind on them because they are soluabe minerals and leach out with water and chemical weathering. The mineral magnetite is a dark, hard, shiny mineral and will generally have a dark shiny surface. But many rocks that contain magnetite do not. So im not sure how to answer your question. Your particular stone got its dark, shiny surface by a combination of chemical and mechanical weathering. The iron is either permeating the stone or leaching out of it. Since you say the stone is slightly magnetic it is safe to assume that iron in the form of magnetite is leaching to the surface and creating a dark weathered rind. 1 Quote Link to comment Share on other sites More sharing options...
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