R Group
This group was formerly known as the Carlisle Lakes group, for a
meteorite that was found in Australia in 1977. It is now named for the
type specimen Rumuruti that fell in Kenya, Africa, in 1934. Rumuruti is
the only witnessed fall of this group and just one small individual has
been preserved in the collection of the Humboldt Museum Berlin, Germany,
since 1938. It was thought to be an anomalous chondrite until it was
reclassified in 1993 and the R group was formed. There are just 25 R
chondrites known if we exclude all probable pairings.
Most R chondrites belong to petrologic type 3 or are heavily brecciated
members that show different lithologies from petrologic type 3 to 6. There
are only a few R chondrites of higher petrologic types that are not
brecciated, e.g. our find Ouzina, an R4 from Morocco. The R chondrites are
quite different from ordinary chondrites and they are the opposite of the
E chondrites when it comes to mineralogy and their state of oxidation. The
members of this group are highly oxidized, containing high amounts of
iron-rich olivine.
NWA 753
brecciated R3
Found in 2000 in Morocco
TKW :12 Kg
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NWA753 -00
large fresh end cut showing the brecciation of NWA 753
45.61gr
$ SOLD |
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NWA753 -01
fresh end cut with some crust
19.248gr
SOLD
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NWA753 -02
fresh small individual
14.54gr
SOLD |
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NWA753 -03
cut fragment with fusion crust
8.20gr
$210
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NWA753 -04
fresh fragment cut in two
17.64gr
$350 |
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NWA753 -05 Nice slice with crust on one edge
8.91gr
$225
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NWA753 -06 Very thin complete slice with crust on
the edge, Primitive Type !
4.38 gr
$130
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NWA753 -07 Very nice specimen for this complete
slice with crust !
3.04 gr
$90
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