Dakota Slim Posted October 17, 2013 Share Posted October 17, 2013 Can a meteorite be non magnetic and not sound hot to a GP Extreme? Just askin cause I found a weird fist sized dark brown rock (sunbaker) in NV that was unlike anything I've ever seen up there. It was roundish and looked like it had a crust. I filed off part of of the crust and it was greenish inside. Quote Link to comment Share on other sites More sharing options...
The Found Dutchman Posted October 17, 2013 Share Posted October 17, 2013 Yes, it's possible. But it's most likely a terrestrial rock. Post photos or better yet -- bring to next outing. Quote Link to comment Share on other sites More sharing options...
d_day Posted October 17, 2013 Share Posted October 17, 2013 I second the posting of pictures. Quote Link to comment Share on other sites More sharing options...
fredmason Posted October 18, 2013 Share Posted October 18, 2013 it could be a terrestrial meteorite-but ain't likely!fred Quote Link to comment Share on other sites More sharing options...
Dakota Slim Posted October 18, 2013 Author Share Posted October 18, 2013 I've picked up so many rocks over the years it isn't funny. I used to collect the odd ones and then annually dump them out at my camp at Rich Hill. I'm sure some people have seen them and wondered how they got there. Then I quit collecting them. I brought this particular rock back to my camp in NV and pitched it there because I had heard that the meteorites found up there were magnetic. Obviously, not all meteorites are the same so I'll fetch it next time I get up there and post a couple photos. I was hoping for an answer like "Yes, it could be a not hot and non magnetic meteorite if _____________________________ ."(fill in the blank) Quote Link to comment Share on other sites More sharing options...
Mikestang Posted October 19, 2013 Share Posted October 19, 2013 (edited) I was hoping for an answer like "Yes, it could be a not hot and non magnetic meteorite if _____________________________ ."(fill in the blank)Yes, it could be a not hot and non magnetic meteorite if it has fusion crust. Any number of achondrites will match your criteria. You are more likely to be struck by lighting during a shark attack than find an achondrite, however.Besides the overwhelming odds, another problem is most folk don't recognize fusion crust, or mistake rock features/colors for fusion crust. It takes many years of handling multitudes of meteorites before you can really get the hang of it. Edited October 19, 2013 by Mikestang Quote Link to comment Share on other sites More sharing options...
Dakota Slim Posted October 19, 2013 Author Share Posted October 19, 2013 Thank you Mike. Quote Link to comment Share on other sites More sharing options...
frank c Posted October 19, 2013 Share Posted October 19, 2013 Only way to know fer sure Slim is to slice it and send a piece into a lab for testing. Quote Link to comment Share on other sites More sharing options...
Dakota Slim Posted April 8, 2014 Author Share Posted April 8, 2014 OK, I fetched this rock that I tossed last fall. It looks like a meteorite but isn't hot or magnetic. The reason I picked it up was because it didn't match any of the surrounding rocks. Here are some photos. Any thoughts? Quote Link to comment Share on other sites More sharing options...
homefire Posted April 8, 2014 Share Posted April 8, 2014 (edited) Yes Stone Meteorites don't have to have any Metal in them. Stone Meteorites are just Rock from some place that got blasted away from some place. That looks like Basalt and Field Spar to me. Edited April 8, 2014 by homefire Quote Link to comment Share on other sites More sharing options...
Mikestang Posted April 8, 2014 Share Posted April 8, 2014 Doesn't look like a meteorite to me.Homefire, stone meteorites can be upwards of 20% metal (Fe/Ni). Quote Link to comment Share on other sites More sharing options...
Dakota Slim Posted April 8, 2014 Author Share Posted April 8, 2014 Yes Stone Meteorites don't have to have any Metal in them. Stone Meteorites are just Rock from some place that got blasted away from some place. That looks like Basalt and Field Spar to me.We have a winner!From GEOLOGY OF THE EUGENE MOUNTAINS at http://www.nbmg.unr.edu/dox/m115text.pdf"Black, dense, vesicular to amygdaloidal olivine-bearing basalt.Columnar joints are found locally. Microphenocrysts of olivineand clinopyroxene in a hyalopilitic groundmass. Microlites ofplagioclase feldspar display pilotaxitic texture. Amygdules arecomposed of chalcedony. Basalt flows in the Eugene Mountainsare interbedded with silicic ash-flow tuffs (Tsv). The tops ofbasalt flows underlying Tsv are brick red and hematitic. Quote Link to comment Share on other sites More sharing options...
saginaw72 Posted April 8, 2014 Share Posted April 8, 2014 Not likely, but maybe it's a lunar rock. Go to this checklist and see how it measures uphttp://meteorites.wustl.edu/check-list.htmSaginaw Quote Link to comment Share on other sites More sharing options...
Mikestang Posted April 8, 2014 Share Posted April 8, 2014 Not likely, but maybe it's a lunar rock. No, it's not. I promise. Quote Link to comment Share on other sites More sharing options...
homefire Posted April 8, 2014 Share Posted April 8, 2014 Doesn't look like a meteorite to me. Homefire, stone meteorites can be upwards of 20% metal (Fe/Ni). Yes but they don't have to have any. Moon Rocks have little to non. Quote Link to comment Share on other sites More sharing options...
Regmaglitch Posted April 8, 2014 Share Posted April 8, 2014 I think everyone can use help with identifying achondrites, martians, and lunars. Ben Quote Link to comment Share on other sites More sharing options...
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