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Halite - Sylvite
- To: meteorite-list@meteoritecentral.com
- Subject: Halite - Sylvite
- From: Bernd Pauli <bernd.pauli@lehrer1.rz.uni-karlsruhe.de>
- Date: Sat, 16 May 1998 18:54:45 +0200
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- Resent-Date: Sat, 16 May 1998 12:57:18 -0400 (EDT)
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Hello Listees,
The B a s z k o w k a (L5) and Mt. T a z e r z a i t (L5) chondrites
have pores which are found to contain euhedral, usually stubby crystals
of the main constituents of the meteorite: olivine, pyroxene, troilite,
and FeNi but no halite or sylvite. These crystals seen in the pores are
the main meteoritic minerals that grew during equilibration into the
free space available.
The B i n n i n g u p (H5) chondrite contains large crystals of
chromite, up to a maximum of 300 müm (the Greek letter mü) across - they
occur in the matrix of the chondrite and frequently display fine twin
lamellae. Again no halite , no sylvite.
N o v a 0 0 1 and N u l l a r b o r 0 1 0 (ureilites) contain euhedral
graphite crystals within and between olivine and pyroxene grains;
mineralogy, textures and silicate compositions are essentially
identical, so that these meteorites are probably paired. No halite, no
sylvite.
Best wishes from extremely sunny Germany
Bernd