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NASA Briefs Preliminary Plume Findings from Moon Mission
briv1016
post Nov 10 2009, 09:26 PM
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http://www.nasa.gov/home/hqnews/2009/nov/H...S_briefing.html
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ngunn
post Nov 14 2009, 08:33 PM
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Well we've now got three estimates in the same ballpark. Converting to ppm: nprev 12ppm, myself 25ppm and P Hayne 1-10ppm.

I started wondering - if that were gold would we mine it? So with this thought here's a comparison from Wikipedia:

"Gold extraction is most economical in large, easily mined deposits. Ore grades as little as 0.5 g/1000 kg (0.5 parts per million, ppm) can be economical. Typical ore grades in open-pit mines are 1–5 g/1000 kg (1–5 ppm); ore grades in underground or hard rock mines are usually at least 3 g/1000 kg (3 ppm). Because ore grades of 30 g/1000 kg (30 ppm) are usually needed before gold is visible to the naked eye, in most gold mines the gold is invisible."
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- briv1016   NASA Briefs Preliminary Plume Findings from Moon Mission   Nov 10 2009, 09:26 PM
- - stewjack   NASA TV Schedule November 13, Friday 10 a.m. - Co...   Nov 12 2009, 05:43 PM
- - Holder of the Two Leashes   News conference is ready to start right now. Edit...   Nov 13 2009, 04:59 PM
- - Phil Stooke   NIR pic of the crater - nice! Phil   Nov 13 2009, 05:08 PM
- - Holder of the Two Leashes   Infrared detection of water vapor and ice, ultravi...   Nov 13 2009, 05:21 PM
|- - Juramike   QUOTE (Holder of the Two Leashes @ Nov 13 200...   Nov 13 2009, 08:40 PM
||- - Holder of the Two Leashes   QUOTE (Juramike @ Nov 13 2009, 02:40 PM) ...   Nov 13 2009, 10:01 PM
|- - stevesliva   QUOTE (Holder of the Two Leashes @ Nov 13 200...   Nov 13 2009, 11:23 PM
- - glennwsmith   Cool!!!!!!!!!...   Nov 13 2009, 05:45 PM
- - bugs_   Congratulations LCROSS team. Incredible. You guy...   Nov 13 2009, 07:10 PM
- - Webscientist   Great News from this not so boring moon! Is t...   Nov 13 2009, 07:45 PM
- - remcook   Cool! Did they say why the hydroxyl signal le...   Nov 13 2009, 07:52 PM
|- - ustrax   From the press release: "there are hints of o...   Nov 13 2009, 08:45 PM
- - nprev   Apparently, there's evidence of at least simpl...   Nov 13 2009, 08:47 PM
- - P Hayne   QUOTE (remcook @ Nov 13 2009, 11:52 AM) D...   Nov 13 2009, 09:06 PM
- - ngunn   Before the specific mention of methane as a 'p...   Nov 13 2009, 10:23 PM
|- - Beauford   QUOTE (ngunn @ Nov 13 2009, 04:23 PM) Bef...   Nov 13 2009, 10:38 PM
|- - SFJCody   QUOTE (ngunn @ Nov 13 2009, 10:23 PM) Bef...   Nov 13 2009, 10:55 PM
- - Fran Ontanaya   They said the plume was magnitude 8 and had a narr...   Nov 13 2009, 11:38 PM
- - elakdawalla   Re: what else other than water was in the plume: C...   Nov 13 2009, 11:46 PM
- - Gsnorgathon   Any idea what mass fraction that 100kg represents?...   Nov 14 2009, 12:46 AM
|- - ngunn   QUOTE (Gsnorgathon @ Nov 14 2009, 12:46 A...   Nov 14 2009, 09:03 AM
- - nprev   Rats. Swear I saw an estimate for the dimensions o...   Nov 14 2009, 01:11 AM
- - tanjent   Colaprete mentioned that at the time the target wa...   Nov 14 2009, 03:07 AM
- - elakdawalla   The Centaur crater is 20 or 30 meters in diameter.   Nov 14 2009, 03:54 AM
- - nprev   Thanks, Emily. Well, here's my (probably wron...   Nov 14 2009, 04:43 AM
- - nprev   Actually, thinking about this some more, I don...   Nov 14 2009, 09:41 AM
- - Fran Ontanaya   It could be from the strength of the spectral sign...   Nov 14 2009, 01:02 PM
|- - centsworth_II   QUOTE (Fran Ontanaya @ Nov 14 2009, 08:02...   Nov 14 2009, 05:41 PM
|- - Zvezdichko   QUOTE (centsworth_II @ Nov 14 2009, 06:41...   Nov 14 2009, 06:08 PM
|- - P Hayne   QUOTE (Zvezdichko @ Nov 14 2009, 10:08 AM...   Nov 14 2009, 07:44 PM
- - remcook   My guess for the additional fitted gases in their ...   Nov 14 2009, 05:43 PM
- - nprev   Z, the crater diameter is actually 20-30 meters, n...   Nov 14 2009, 07:44 PM
- - ngunn   Well we've now got three estimates in the same...   Nov 14 2009, 08:33 PM
|- - Holder of the Two Leashes   I really appreciated Colaprete being willing to op...   Nov 14 2009, 10:27 PM
|- - PFK   Just out of interest - what would the total organi...   Nov 15 2009, 12:00 AM
|- - P Hayne   QUOTE (PFK @ Nov 14 2009, 04:00 PM) Just ...   Nov 15 2009, 04:44 AM
- - Phil Stooke   I've put together a little finder guide to the...   Nov 14 2009, 09:01 PM
- - Fran Ontanaya   But you are using estimates for pure, solid ice an...   Nov 14 2009, 09:52 PM
|- - P Hayne   QUOTE (Fran Ontanaya @ Nov 14 2009, 01:52...   Nov 15 2009, 04:39 AM
- - nprev   That's an excellent point.   Nov 15 2009, 12:08 AM
- - Phil Stooke   I don't know offhand but it's obviously ve...   Nov 15 2009, 01:13 AM
- - tanjent   Regarding the comparison of water to gold, remembe...   Nov 15 2009, 04:41 AM
|- - Holder of the Two Leashes   As I recall from the blog site (someone correct me...   Nov 15 2009, 05:56 AM
- - nprev   Did the Centaur actually have hydrazine? The main ...   Nov 15 2009, 04:47 AM
|- - P Hayne   QUOTE (nprev @ Nov 14 2009, 08:47 PM) Did...   Nov 15 2009, 04:55 AM
- - Geert   Last night we had quite a bit of rain here in the ...   Nov 16 2009, 06:26 AM
- - nprev   Um...we're sorry?   Nov 16 2009, 06:36 AM
- - Stu   Better get under cover Geert; there should be a na...   Nov 16 2009, 06:41 AM
- - JohnVV   QUOTE No kidding, this is the official news bullet...   Nov 16 2009, 07:20 AM
- - marsophile   One interesting question is: to what degree does t...   Nov 16 2009, 06:12 PM
- - Holder of the Two Leashes   I don't have the LRO results. This paper, whi...   Nov 16 2009, 06:49 PM
|- - PFK   Just to be clear, when I mentioned the organic con...   Nov 16 2009, 10:50 PM
- - nprev   Most of the organics on the booster would presumab...   Nov 17 2009, 12:35 AM
- - Phil Stooke   There is also a lot of doubt about how a manufactu...   Nov 17 2009, 01:29 AM
- - Greg Hullender   Note that the impact was at only 2.5 kps. http://...   Nov 17 2009, 05:25 AM
- - marsbug   New scientist has confused me. I know I shouldn...   Nov 20 2009, 03:52 PM
|- - mcaplinger   QUOTE (marsbug @ Nov 20 2009, 07:52 AM) N...   Nov 20 2009, 04:01 PM
|- - marsophile   QUOTE (mcaplinger @ Nov 20 2009, 09:01 AM...   Nov 20 2009, 06:20 PM
|- - mcaplinger   QUOTE (marsophile @ Nov 20 2009, 10:20 AM...   Nov 20 2009, 06:52 PM
- - marsbug   I think you're right!   Nov 20 2009, 04:11 PM
- - Ron Hobbs   I think you all may find the comments of William M...   Nov 20 2009, 06:53 PM


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