Geology Reference
In-Depth Information
Unbrecciated lunar basalt
1226.3 g
Found December 18, 2002
10.0 × 8.5 × 5.5 cm
Weathering = 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.
LAP 02205
0.708
Ilm
0.707
0.706
0.705
Magnetic
0.704
0.703
100
Leachate
+18Ma
0.702
Cpx Fe
50
0
WR
Melt veins
0.701
-50
-18Ma
Cpx Mg
-100
0.700
0
0.05
0.1
0.15
0.2
Plag
87
Rb/
86
Sr
0.699
0.00
0.04
0.08
0.12
0.16
0.20
87
Rb/
86
Sr
(a)
(b)
16
15
14
13
12
11
10
9
8
7
6
5
Low-Ti basalts
14
Apollo 11
Apollo 12
Apollo 15
Apollo 17
VLT
LAP 02 205
Dho 287A
NWA 032
Apollo 12
Apollo 15
12
LAP 02 205
Dho 287A
NWA 032
10
High-Ti
basalts
8
6
Low-Ti
basalts
4
2
0
0
5
10
15
20
25
5
7
9
11
13
15
MgO (wt%)
CaO (wt%)
Plate 67
MiNERALogy
SigNiFiCANCE
olivine phenocrysts (~2%), pyroxene (~50%), plagioclase
(~35%), ilmenite (~4%), spinel, phosphate, troilite, and
fayalitic symplectite.
LAP 02205 has a distinctively young age of 3.0 ga (upper
right, [512]), and is similar to the basaltic series defined by
the Apollo 12 and 15 low Ti basalts (lower figure, [505]). it is
paired with five other pieces for a combined mass close to 2 kg.
References [505-516]
