Re: [meteorite-list] Gold and Iridium content of meteorites (especially irons)
Shawn wrote: "What its suppose to say is 1.49 μg/g Au and ug/g is a unit of mass equal to one millionth (1/100) of a gram (1 × 10−6), or 1/1000 of a milligram. So if I did my math right, the new answer would be .48g per 32kg?" Hi Mike and List, I gave the answer of 0.03 g that might be left after refining with an efficiency a bit over 50%. So, no, 0.48 g per 32 kg is wrong also, you went an extra 1000 the other way now. The correct answer, extrapolated from the limited measurement zone is 0.048 g in the 32 Kg mass, which at least is measureable on some scales we use regularly! Good that was cleaned up, and I no longer feel like the black sheep here (except for Rob who had the confidence to agree) It turns out this wasn't in the Bulletin anyway, just the pending stage for editing since MB 100 hasn't come out yet, these are the dangers of a taking data still requiring proofing. When something is put in writing sometimnes others won't question it, a human trait acquired during the ancient Roman times from repeated floggings, and then passed to Galileo... Kindest wishes Doug -Original Message- From: Shawn Alan To: meteorite-list Sent: Thu, Oct 6, 2011 1:18 am Subject: [meteorite-list] Gold and Iridium content of meteorites (especially irons) Mike G and Listers, I would say we struck gold in those meteorites :). My understanding is I thought Melrose (a) had the highest gold content, but again there are always discoveries being made everyday. I am not sure who asked this but I was looking at a Melrose (a) slice and on the edge of the slice looking through a 60x loupe I saw a spec that looked gold to me. I rechecked it and kept looking and I have to say with other lights I used it looked like a gold spec to me, real gold. Now back to the NWA 6932 I think a few people said that there is about 48g in the total know weight of NWA 6932 because Mike said the gold content was listed at 1.49mg/g? Now Mike that would be true if it was 1.49mg/g but thats not the case. What its suppose to say is 1.49 μg/g Au and ug/g is a unit of mass equal to one millionth (1/100) of a gram (1 × 10−6), or 1/1000 of a milligram. So if I did my math right, the new answer would be .48g per 32kg? On the other hand, Melrose (a) is .30oz per ton not sure who is higher, but here is an article on Melrose (a) about the gold content and its weight in gold. http://www.minsocam.org/ammin/AM19/AM19_370.pdf Lastly, not sure if someone already caught the weight typo but I checked it on the Meteoritical Bulletin Database for NWA 6932 and the gold weight is 1.49 μg/g Au not 1.49mg/g. Why I say this is I havent read all the comments about this post so I bet someone cought it already and I am just repeating what has been said or not. Any whos, take a look at the Melrose (a) write up and keep on rokkin. Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html [meteorite-list] Gold and Iridium content of meteorites (especially irons)Michael Gilmer meteoritemike at gmail.com Mon Oct 3 20:33:34 EDT 2011 Previous message: [meteorite-list] Testplease ignore Next message: [meteorite-list] Gold and Iridium content of meteorites (especiallyirons) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hi List, In perusing through the latest additions to the Met Bulletin today, I was reading the compositional data for NWA 6932 (iron, ungrouped). I noticed that the gold (Au) content was listed at 1.49mg/g. Is this sort of data as straight-forward as it appears, or is there more to it that this layman is missing? In other words, how much gold is in this meteorite? The TKW of this meteorite is 32kg. So, with 1000g in a kilo, and 1000mg in a gram, how much gold is in this celestial hunk of iron? (my math is horrible) Second question, what is highest known gold content in a meteorite and what meteorite is it? Third question, some meteorites also have high iridium content. What is the highest known iridium content in a meteorite? I am not suggesting in any way that meteorites should be refined or melted down to extract their precious metals content, but given the high value of metals such as gold and iridium, has any profiteer tried such an endeavour? Or would the process be too complex and expensive? Best regards, MikeG - Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - Previous message: [meteorite-list] Testplease ignore Next message: [meteori
[meteorite-list] Gold and Iridium content of meteorites (especially irons)
Mike G and Listers, I would say we struck gold in those meteorites :). My understanding is I thought Melrose (a) had the highest gold content, but again there are always discoveries being made everyday. I am not sure who asked this but I was looking at a Melrose (a) slice and on the edge of the slice looking through a 60x loupe I saw a spec that looked gold to me. I rechecked it and kept looking and I have to say with other lights I used it looked like a gold spec to me, real gold. Now back to the NWA 6932 I think a few people said that there is about 48g in the total know weight of NWA 6932 because Mike said the gold content was listed at 1.49mg/g? Now Mike that would be true if it was 1.49mg/g but thats not the case. What its suppose to say is 1.49 μg/g Au and ug/g is a unit of mass equal to one millionth (1/100) of a gram (1 × 10−6), or 1/1000 of a milligram. So if I did my math right, the new answer would be .48g per 32kg? On the other hand, Melrose (a) is .30oz per ton not sure who is higher, but here is an article on Melrose (a) about the gold content and its weight in gold. http://www.minsocam.org/ammin/AM19/AM19_370.pdf Lastly, not sure if someone already caught the weight typo but I checked it on the Meteoritical Bulletin Database for NWA 6932 and the gold weight is 1.49 μg/g Au not 1.49mg/g. Why I say this is I havent read all the comments about this post so I bet someone cought it already and I am just repeating what has been said or not. Any whos, take a look at the Melrose (a) write up and keep on rokkin. Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html [meteorite-list] Gold and Iridium content of meteorites (especially irons)Michael Gilmer meteoritemike at gmail.com Mon Oct 3 20:33:34 EDT 2011 Previous message: [meteorite-list] Testplease ignore Next message: [meteorite-list] Gold and Iridium content of meteorites (especiallyirons) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hi List, In perusing through the latest additions to the Met Bulletin today, I was reading the compositional data for NWA 6932 (iron, ungrouped). I noticed that the gold (Au) content was listed at 1.49mg/g. Is this sort of data as straight-forward as it appears, or is there more to it that this layman is missing? In other words, how much gold is in this meteorite? The TKW of this meteorite is 32kg. So, with 1000g in a kilo, and 1000mg in a gram, how much gold is in this celestial hunk of iron? (my math is horrible) Second question, what is highest known gold content in a meteorite and what meteorite is it? Third question, some meteorites also have high iridium content. What is the highest known iridium content in a meteorite? I am not suggesting in any way that meteorites should be refined or melted down to extract their precious metals content, but given the high value of metals such as gold and iridium, has any profiteer tried such an endeavour? Or would the process be too complex and expensive? Best regards, MikeG - Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - Previous message: [meteorite-list] Testplease ignore Next message: [meteorite-list] Gold and Iridium content of meteorites (especiallyirons) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Meteorite-list mailing list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Gold and Iridium content of meteorites (especially irons)
...so when we get tough going people will start melting down their meteorites for precious metals. Gold is currently US $50-$60/g. The example you quoted of 0.15% gold, if true (sounds high, but why not, are you sure they weren't micro grams being a factor of 1000 even smaller than you say?) would mean you need to buy about 650 g of this meteorite to extract a gram of gold. So if the meteorite is $5/g you have to pay 60 times the value of the gold just to get the raw material. Then you have to extract it. It would be a bitch to extract it. The sulfides would tangle the gold all up in conventional extration processes. It would be easier to make micros out of a nice meteorite rather than re-invent the Butcher iron! Hope that gives a bit of insight! Kindest wishes Doug -Original Message- From: Michael Gilmer To: meteorite-list Sent: Mon, Oct 3, 2011 8:40 pm Subject: [meteorite-list] Gold and Iridium content of meteorites (especially irons) Hi List, In perusing through the latest additions to the Met Bulletin today, I was reading the compositional data for NWA 6932 (iron, ungrouped). I noticed that the gold (Au) content was listed at 1.49mg/g. Is this sort of data as straight-forward as it appears, or is there more to it that this layman is missing? In other words, how much gold is in this meteorite? The TKW of this meteorite is 32kg. So, with 1000g in a kilo, and 1000mg in a gram, how much gold is in this celestial hunk of iron? (my math is horrible) Second question, what is highest known gold content in a meteorite and what meteorite is it? Third question, some meteorites also have high iridium content. What is the highest known iridium content in a meteorite? I am not suggesting in any way that meteorites should be refined or melted down to extract their precious metals content, but given the high value of metals such as gold and iridium, has any profiteer tried such an endeavour? Or would the process be too complex and expensive? Best regards, MikeG - Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Gold and Iridium content of meteorites (especially irons)
Hi List, In perusing through the latest additions to the Met Bulletin today, I was reading the compositional data for NWA 6932 (iron, ungrouped). I noticed that the gold (Au) content was listed at 1.49mg/g. Is this sort of data as straight-forward as it appears, or is there more to it that this layman is missing? In other words, how much gold is in this meteorite? The TKW of this meteorite is 32kg. So, with 1000g in a kilo, and 1000mg in a gram, how much gold is in this celestial hunk of iron? (my math is horrible) Second question, what is highest known gold content in a meteorite and what meteorite is it? Third question, some meteorites also have high iridium content. What is the highest known iridium content in a meteorite? I am not suggesting in any way that meteorites should be refined or melted down to extract their precious metals content, but given the high value of metals such as gold and iridium, has any profiteer tried such an endeavour? Or would the process be too complex and expensive? Best regards, MikeG - Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
