Meteorite**Gadamis 005, Lunar Ferroan Anorthositic**4.602 grams, Apollo 16!!!

Description

Hello up for sale is Gadamis 005 classified as a rare Lunar Ferroan Anorthositic cataclastic. This gorgeous individual weighs 4.602 grams and has a nice shape. Microprobe analysis reveals a significantly brecciated, cataclastic anorthitic plagioclase host making up 98-99% of this meteorite. Poikilitically 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. 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.
This slice will come with 2 COA cards, Streaming meteorites & Mark Lyon. Thanks for your interest and take care.
Name:
Gadamis 00
5
Name: Gadamis 005
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
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, 003, and 004 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 An96.0±0.1Ab3.8±0.1Or0.2±0.1, n=4; olivine Fa38.9±1.0, Fe/Mn=105±3, n=4; pigeonite Fs34.0±4.8Wo5.4±2.3, Fe/Mn=60±3, n=4; augite Fs5.7Wo46.1, 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. (link)
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
LPI says:
Apollo 16 Lunar Samples
The overall set of lunar samples collected during the Apollo program can be classified into three major rock types, basalts, breccias, and lunar highland rocks. The Apollo 16 sample collection is dominated by breccias, and there are also some important examples of highland crustal rocks. There are no basaltic rocks in the Apollo 16 samples except for tiny clasts within some of the breccias. The Apollo 16 crew collected 731 individual rock and soil samples, including a deep drill core with material from 2.2 meters below the lunar surface, with a total mass of 95.7 kilograms.
Rocks from the Lunar Highland Crust
Very early in the Moon's history, much of its outer region was molten, a stage in lunar history known as the magma ocean. As the magma ocean cooled and solidified, a type of rock known as anorthosite, which consists mostly of the mineral plagioclase, floated to the surface. Small fragments of anorthosite were found beginning on Apollo 11, and a larger sample was found on Apollo 15. Two anorthosite samples collected on Apollo 16 are much larger than those found on any other Apollo mission. 60025, the sample shown here, solidified 4.36 billion years ago.