Hi Mckinney,
It's been suggested that mesosiderites are the result of a collision of a
parent body containing eucrite material and core material. The result is a
melting of the material and forming the nearly equal parts of metal to
silicate. There is a lot that is not understood yet about this class, but it
is thought it could have impacted when the core of a asteroid was still
molten with material from the eucrite parent body.
Because of this it is possible that some of the material was melted (as in
your Vaca sample) into a glassy material. I believe there is an absence of
olivine in mesosiderites.
McSween book is a good source for chemical makeup of various types of
meteorites.
--AL Mitterling
----- Original Message -----
From: "mckinney trammell" <[email protected]>
To: <[email protected]>
Sent: Saturday, October 16, 2010 9:21 AM
Subject: [meteorite-list] vaca muerta euc- what is it?
i have several pieces of vaca muerta "eucrite". it is not like any of the
other
euc (soft, granite appearance, white). this is very hard , has a
"compressed
granular" textue and is homogenous- all one type of mineral. it is glass/
olivine -like and take a very hi polish. what is this mineral? why is it
called
a "Eucrite" since it does not resemble any of the other ones out there?
are
there other "eucrites" made of this material? if so got pix? any info or
additional other pix of this or other eucrites made of this material
appreciated.
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