LOW PRICE! CUT FRAGMENTS! MAGNIFICENT GADAMIS 004 LUNAR METEORITE! .238 GMS

Description

AMAZING GADAMIS 004 LUNAR METEORITE!!!
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Specimen weight: .238
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Specimen Type: Cut Fragments!!!
Gadamis 004
Basic information
Name:
Gadamis 004
This is an OFFICIAL meteorite name.
Abbreviation:
There is no official abbreviation for this meteorite.
Observed fall:
No
Year found:
2022
Country:
Libya
Mass:
12.66 kg
Classification
history:
Recommended:
Lunar (anorth)
This is 1 of 79 approved meteorites classified as Lunar (anorth).
Comments:
Approved 19 Mar 2022
Writeup
Writeup from MB 111:
Gadamis 004
30.284°N, 11.005°E
Ghadamis, Libya
Purchased: 2022
Classification: Lunar meteorite (anorth)
History
: This meteorite was found in Libya at the same location as Gadamis 002 and 003, purchased by Mark Lyon in 2022.
Physical characteristics
: Single stone with patches of dark fusion crust and smooth, light green-colored patches. One side is more irregular with a weathered surface that was fractured at some time in the past. Polished sawcut surfaces reveal cm-size clasts of anorthosite bounded by darker, fine-grained, cataclastic zones.
Petrography
: (C. Agee,
UNM
) Microprobe analysis reveals a significantly brecciated, cataclastic anorthitic plagioclase host making up 98-99% of this meteorite. Poikiolitically enclosed in the plagioclase are sparse, very small olivine and pyroxene blebs (most in the range 5-10 μm). Larger pyroxene grains are scarce with two larger grains in size range of 300 μm observed in the microprobe mount. Together, olivine and pyroxene make up a total of ~1-2% of this meteorite.
Geochemistry
: (C. Agee,
UNM
) Plagioclase An
96.0±0.1
Ab
3.8±0.1
Or
0.2±0.1
, n=4; olivine Fa
38.9±1.0
, Fe/Mn=105±3, n=4; pigeonite Fs
34.0±4.8
Wo
5.4±2.3
, Fe/Mn=60±3, n=4; augite Fs
5.7
Wo
46.1
, Fe/Mn=32.
Classification
: Lunar ferroan anorthosite, cataclastic. Olivine, pigeonite and plagioclase compositional values plot within the FAN suite field (after Warren
1993). The very high anorthite content (98-99%) and cataclastic texture is similar to Apollo 16 cataclastic FANs. Paired with Gadamis 002 and Gadamis 003.
Specimens
: 21 g on deposit at
UNM
, Mark Lyon holds the main mass.
Bibliography:
Warren P.H. (1993) A concise compilation of petrologic information on possibly pristine nonmare Moon rocks.
American Mineralogist
78
(3-4), 360-376.
Data from:
MB111
Table 0
Line 0:
State/Prov/County:
Ghadamis
Date:
P 2022
Latitude:
30.284°N
Longitude:
11.005°E
Mass (g):
12.66 kg
Pieces:
1
Class:
Lunar (anorth)
Shock stage:
high
Weathering grade:
moderate
Fayalite (mol%):
38.9±1.0
Ferrosilite (mol%):
34.0±4.8, 5.7
Wollastonite (mol%):
5.4±2.3, 46.1
Classifier:
C. Agee, UNM
Type spec mass (g):
21
Type spec location:
UNM
Main mass:
Mark Lyon
Comments:
Fieldname ML-26; submitted by C. Agee
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