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Gadamis 003
Basic information Name: Gadamis 003
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Libya
Mass:help 1270 g
Classification
  history:
Recommended:  Lunar (anorth)    [explanation]

This is 1 of 79 approved meteorites classified as Lunar (anorth).   [show all]
Search for other: Lunar meteorites
Comments: Approved 15 Dec 2021
Writeuphelp
Writeup from MB 110:

Gadamis 003        30.284°N, 11.005°E

Ghadamis, Libya

Find: 2021

Classification: Lunar meteorite (anorth)

History: This meteorite was reportedly found in Libya at the same location as Gadamis 002 in 2021, purchased by Abdelhadi Aithiba in 2021.

Physical characteristics: Two identically appearing stones (670 and 600 g) found together at the Gadamis 002 site. The stones have a light green sand-blasted exterior, patches of smoothed dark fusion crust, as well as some light tan desert weathering. Polished sawcut surfaces reveal a brecciated, very fine-grained light gray interior with a few scattered white grains.

Petrography: (A. Ross and C. Agee, UNM) 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.

Geochemistry: (A. Ross, UNM) Plagioclase An96.1±0.4Ab3.8±0.4Or0.2±0.1, n=6; olivine Fa39.1±0.8, Fe/Mn=105±5, n=6; pigeonite Fs32.9±4.9Wo6.1±2.5, Fe/Mn=59±4, n=5.

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.

Specimens: 24.32 g on deposit at UNM, Mark Lyon and Craig Zlimen hold the main masses.

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:
  MB110
  Table 0
  Line 0:
State/Prov/County:Ghadamis
Date:2021
Latitude:30.284°N
Longitude:11.005°E
Mass (g):1270
Pieces:2
Class:Lunar (anorth)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):39.1±0.8
Ferrosilite (mol%):32.9±4.9
Wollastonite (mol%):6.1±2.5
Classifier:C. Agee, UNM
Type spec mass (g):24.32
Type spec location:UNM
Main mass:Mark Lyon and Craig Zlimen
Comments:Fieldname ABA-1044; submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann      
Domjan Svilkovic   
Robert Smart         
Geography:

Libya
Coordinates:
     Recommended::   (30° 17' 2"N, 11° 0' 18"E)

Statistics:
     This is 1 of 30 approved meteorites from Ghadamis, Libya (plus 2 unapproved names)
     This is 1 of 1534 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)
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