[meteorite-list] Mercury Meteorites - the short list

From: cdtucson at cox.net <cdtucson_at_meteoritecentral.com>
Date: Thu, 11 Aug 2011 15:16:46 -0400
Message-ID: <20110811151646.ZZIDV.1551604.imail_at_fed1rmwml38>

Michael.
You and the report mention Sulfides.
Are you suggesting that a meteorite might be made up primarily of sulfides?
Because there have been many nearly pure sulfide meteor-wrongs found and looked at and rejected.
These have been called such things as " manganese nodules " , " Tombstone Manganese silver ore" and many other similar stuff found like nearly pure Molybdenum and bornite wrongs as well as the famous or rather infamous NJ fall wrong and many similar objects that flood eBay today.
Perhaps the big secret NASA is keeping is that one or more of these previous wrongs may be right after all?
Maybe not all metal type meteorites are Fe/Ni after all. Maybe some are made of other metals and or sulfides?
Those sneaky little NASA devils may be at it again.
Carl
Meteoritemax

--
                                                             
"Democracy is two wolves and a lamb voting on what to have for dinner. Liberty is a well-armed lamb contesting the vote". 
  
 
---- Michael Murray <mikebevmurray at gmail.com> wrote: 
> Carl, List,
> I make no guarantees that this information is correct but, as I  
> understand it,  the public might have to wait until sometime around  
> the middle of September of 2012 for the data they are collecting now  
> from orbit.  And, I understand only a few of the pictures taken will  
> be released between now and then.   Wonder why?  I'm starting to get a  
> mushroom complex.  Kept in the dark and all that.  I ask you, can  
> mushrooms survive on sulfides?
> 
> Mike in CO
> 
> 
> On Aug 6, 2011, at 10:32 PM, <cdtucson at cox.net> <cdtucson at cox.net>  
> wrote:
> 
> > Bernd,
> >
> > The very latest info on Mercuries composition does not even mention  
> > Fe or FeO. It seems to me if it was there NASA would have already  
> > mentioned it.
> >
> > http://www.nasa.gov/mission_pages/messenger/media/NewsConference20110616.html
> >
> > Ut says;
> >
> > Mercury's Surface Composition
> >
> > The X-ray Spectrometer (XRS) ? one of two instruments on MESSENGER  
> > designed to measure the abundances of many key elements on Mercury ?  
> > has made several important discoveries since the orbital mission  
> > began. The magnesium/silicon, aluminum/silicon, and calcium/silicon  
> > ratios averaged over large areas of the planet's surface show that,  
> > unlike the surface of the Moon, Mercury's surface is not dominated  
> > by feldspar-rich rocks.
> >
> > XRS observations have also revealed substantial amounts of sulfur at  
> > Mercury's surface, lending support to prior suggestions from ground- 
> > based telescopic spectral observations that sulfide minerals are  
> > present. This discovery suggests that the original building blocks  
> > from which Mercury was assembled may have been less oxidized than  
> > those that formed the other terrestrial planets, and it has  
> > potentially important implications for understanding the nature of  
> > volcanism on Mercury.
> >
> > So, until the next report it seems all of these older theories might  
> > be out the window.
> >
> > Carl
> > --
> >
> >
> >
> >
> >
> > "Democracy is two wolves and a lamb voting on what to have for  
> > dinner. Liberty is a well-armed lamb contesting the vote".
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ---- "Bernd V. Pauli" <bernd.pauli at paulinet.de> wrote:
> >> Hi All,
> >>
> >> I would like to remind you of Russ Kempton's article in "Meteorite!"
> >>
> >> Kempton R. (1996) Abee: More Questions Than Answers
> >> (METEORITE! Magazine, Pallasite Press, November, 1996):
> >>
> >> "Curiously, the study of light reflected from Mercury's surface
> >> indicates that it is iron-rich and oxygen-poor - characteristics
> >> shared with E chondrites".*
> >>
> >> ... or with some of their achondritic counterparts: the aubrites.
> >>
> >> * In 1998, our late Richard Norton wrote in RFS:
> >>
> >> "Their low oxygen content suggests that they formed even closer
> >> to the Sun than the H-chondrites, possibly inside Mercury's orbit."
> >>
> >> NORTON O.R. (1998) Rocks From Space, p. 190, E-Chondrites:
> >>
> >> But Mercury's mean density of about 5.4 g/cm^3 is a major problem
> >> because enstatite chondrites have a density of about 3.4-3.7 g/cm^3.
> >>
> >> NWA 011 is also mentioned in the "short list" but here's another  
> >> obstacle:
> >>
> >> ...its high FeO content, a circumstance which implies a parent body  
> >> with
> >> a small metallic iron core. Mercury is believed to have a large  
> >> iron core.
> >>
> >> Niquist et al. (2003) suggest that NWA 011 is of asteroidal rather  
> >> than
> >> Mercurian origin.
> >>
> >> Love S.G. et al. (1995) think it highly likely that there are  
> >> Mercurian
> >> meteorites in our collections although they should be rare (probably
> >> less than 1% of the amount of Martian meteorites in our  
> >> collections)*.
> >>
> >> *Love S.G. et al. (1995) Recognizing mercurian
> >> meteorites  (MAPS 30-3, 1995, pp. 269-278).
> >>
> >> Best wishes from rainy
> >> Southern Germany,
> >>
> >> Bernd
> >>
> >>
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Received on Thu 11 Aug 2011 03:16:46 PM PDT