[meteorite-list] Interesting meteorites- Portales and Sahara 98362

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From: John Divelbiss <j.divelbiss_at_meteoritecentral.com>
Date: Thu Apr 22 10:01:32 2004
Message-ID: <000b01c20ef2$0a2274e0$310a5a0c_at_0m824>

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To answer one of my own questions...I can offer this...impact melts are =
just what the name suggests, two materials that have collided, melted =
and cooled together. Probably on or near the surface???

Portales being from a "deep" region, is a combination of two materials =
that were joined by shock and pressure injection(of metal into stone). =
Temperature must not been a major factor for the depth. Could a Portales =
and a Sahara 98362 have formed in the same type of collision?

I would like more input on the particulars of 98362, if possible.

John Divelbiss
=20
  ----- Original Message -----=20
  From: John Divelbiss=20
  To: meteorite-list_at_meteoritecentral.com=20
  Sent: Friday, June 07, 2002 11:35 PM
  Subject: [meteorite-list] Interesting meteorites- Portales and Sahara =
98362

  Hello all,

  The list has recently discussed the Portales Valley meteorite with =
more to be said I'm sure. I have a wonderful piece that has a nice mix =
of metal vein and stone...including a few large chondrules right next to =
a metal vein. Very strange...you would think such an impact would alter =
the stone greatly...but it doesn't look like it at first glance. Also =
the crust over the metal portion is black and not thick. The crust over =
the stone portion is similar but has the look of having more minerals in =
it. With my small 5g piece, I cannot make too many observations.

  That brings me to a different meteorite. It is Sahara 98362, which is =
supposedly a H6, impact melt breccia (IMB). My first question is "Has it =
been thoroughly studied, and where can I find results?"
  =20
  The second issue...what is difference between an impact melt and what =
happended to the Portales stone material? One hit by stone and the other =
hit by an iron? It must be more than that, because the 98362 material is =
glass-like when viewing a fractured surface. It is loaded with metal. I =
seen no other meteorite like it. It looks almost like the sulphur slag =
that has been discussed lately.

  Help...will someone please provide more insight into this very strange =
meteorite?

  Thanx in advance,

  John Divelbiss

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<META content=3D"text/html; charset=3Diso-8859-1" =
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<BODY bgColor=3D#ffffff>
<DIV><FONT size=3D2>To answer one of my own questions...I can offer =
this...impact=20
melts are just what the name suggests, two materials that have collided, =
melted=20
and cooled together. Probably on or near the surface???</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>Portales being from a "deep" region, is a =
combination of two=20
materials that were joined by shock and pressure injection(of metal into =
stone).=20
Temperature must not been a major factor for the depth. Could a Portales =
and a=20
Sahara 98362 have formed in the same type of collision?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>I would like more input on the particulars of 98362, =
if=20
possible.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>John Divelbiss</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A href=3D"mailto:j.divelbiss_at_worldnet.att.net"=20
  title=3Dj.divelbiss_at_worldnet.att.net>John Divelbiss</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
  href=3D"mailto:meteorite-list_at_meteoritecentral.com"=20
  =
title=3Dmeteorite-list_at_meteoritecentral.com>meteorite-list@meteoritecentr=
al.com</A>=20
  </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, June 07, 2002 =
11:35=20
PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [meteorite-list] =
Interesting=20
  meteorites- Portales and Sahara 98362</DIV>
  <DIV><BR></DIV>
  <DIV><FONT size=3D2>Hello all,</FONT></DIV>
  <DIV> </DIV>
  <DIV><FONT size=3D2>The list has recently discussed the Portales =
Valley=20
  meteorite with more to be said I'm sure. I have a wonderful piece =
that=20
  has a nice mix of metal vein and stone...including a few large=20
  chondrules right next to a metal vein. Very strange...you would =
think=20
  such an impact would alter the stone greatly...but it doesn't look =
like it at=20
  first glance. Also the crust over the metal portion is black and not =
thick.=20
  The crust over the stone portion is similar but has the look of having =
more=20
  minerals in it. With my small 5g piece, I cannot make too many=20
  observations.</FONT></DIV>
  <DIV> </DIV>
  <DIV><FONT size=3D2>That brings me to a different meteorite. It is =
Sahara 98362,=20
  which is supposedly a H6, impact melt breccia (IMB). My first question =

  is "Has it been thoroughly studied, and where can I find=20
  results?"</FONT></DIV>
  <DIV><FONT size=3D2></FONT> </DIV>
  <DIV><FONT size=3D2>The second issue...what is difference between =
an impact=20
  melt and what happended to the Portales stone =
material?</FONT> <FONT=20
  size=3D2>One hit by stone and the other hit by an iron? It must be =
more than=20
  that, because the 98362 material is glass-like when viewing a =
fractured=20
  surface. It is loaded with metal. I seen no other meteorite like =
it.  It=20
  looks almost like the sulphur slag that has been discussed=20
lately.</FONT></DIV>
  <DIV> </DIV>
  <DIV><FONT size=3D2>Help...will someone please provide more insight =
into this=20
  very strange meteorite?</FONT></DIV>
  <DIV> </DIV>
  <DIV><FONT size=3D2>Thanx in advance,</FONT></DIV>
  <DIV> </DIV>
  <DIV><FONT size=3D2>John Divelbiss</FONT></DIV>
  <DIV> </DIV>
  <DIV> </DIV></BLOCKQUOTE></BODY></HTML>

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Received on Sat 08 Jun 2002 09:40:21 AM PDT

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