Geology Reference
In-Depth Information
Miller Range (MIL) 05035
Unbrecciated lunar gabbro
142.2 g
Found December 11, 2005
4.5 × 4.0 × 3.5 cm
Weathering = A/B
may not have been sampled by
Apollo
or
Luna
missions and therefore can
provide additional constraints on basaltic magmatism and volcanism on
the Moon in general.
MIL 05035,0
Pyroxenes
Symplectite
assemblages
Fayalite
and
mesostasis
Ilmenite
Silica
T=3.80
±
0.05 Ga
P×1(r)
0.516
ε
Nd
=+ 7. 2
±
0.4
Phosphates
0.515
P×2(r)
Ilm(r)
Tr oilite
WR(r)
WR(asuka)
147
Sm/
144
Nd
0.514
WR
0.2
0.3
0.4
0.8
0.513
+51Ma
Plag(r)
0.4
0.0
0.512
WR(l)
-0.4
-51Ma
Leach
-0.8
0.511
1 mm
0.15
0.20
0.25
147
Sm/
144
Nd
0.30
0.35
Plagioclase
Plate 66
MiNERALogy
SigNiFiCANCE
This coarse-grained gabbroic textured rock contains
~55%-60% calcic to subcalcic pyroxene, maskelynitized
plagioclase (~30%), and minor amounts of silica, troilite,
phosphates, ilmenite, and symplectites (right, [501]).
MiL 05035 contains maskelynitized plagioclase that is
very clear and glassy looking, giving the rock a shiny or
glossy appearance. This, combined with the older age of
3.8 ga (left, [503]), give this sample unique characteristics
that complement the
Apollo
/
Luna
collections.
References [500-504]
