NWA 1950
SNC Lherzolithic Peridotite
The members of this subgroup are cumulate, ultramafic rocks of
plutonic origin, resembling terrestrial lherzolites and harzburgites.
They consist primarily of medium-grained olivine and chromite that
are poikilitically enclosed by large orthopyroxene crystals. Minor
interstitial areas of plagioclase glass (maskelynite) occur, and
clinopyroxenes with accessory oxides and phosphates are present. The
lherzolitic shergottites probably crystallized as cumulates from
residual melts in magma chambers, and they share many mineralogical
and chemical features with the basaltic shergottites. The
lherzolitic members are five finds from the ice fields of Antarctica
- ALH 77005, Yamato 793605, LEW 88516, Yamato 1075, and GRV 9927.
The unique Lherzolite ouside Antarctica is NWA 1950, the freshest of
all the group. NASA
page about NWA 1950 BBC
News page about NWA 1950
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NWA1950 -13
Full slice of the mass, an attractive piece !!!
30.35 gr
SOLD.
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NWA1950 -14
Thin slice !
0.117gr
SOLD
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NWA1950 -01
thick slice of the interior, perfect for science
7.918gr
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NWA1950 -15
A tiny slice !
0.111 grgr
SOLD
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NWA1950 -05
cut fragment
0.378gr
SOLD
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NWA1950 -06
broken fragment
0.227gr
SOLD |
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NWA1950 -07
cut edge of a larger slice, fully crusted on the
back
0.486gr
SOLD
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NWA 1950 - 10
Nice thin slice with fusion crust on the edge !
76 mg
$ 170 |
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NWA 1950 - 11
a group very thin and nice slice
128 mg
SOLD
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NWA 1950 - 12
Nice thin slice with fusion crust on the edge !
90 mg
SOLD
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NWA1950 -16 Thin slice and
fragments ...
0.081gr
SOLD
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