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Dar al Gani 1055
Basic information Name: Dar al Gani 1055
     This is an OFFICIAL meteorite name.
Abbreviation: DaG 1055
Observed fall: No
Year found: 2007
Country: Libya
Mass:help 305 g
Meteoritical Bulletin:  MB 99  (2011)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 May 2011
Revised 20 May 2011: Change shock level in writeup
Writeup from MB 99:

Dar al Gani 1055 (DaG 1055)        27°22.80’N, 16°28.14’E

Al Jufrah, Libya

Found: 2007

Classification: HED achondrite (Eucrite, polymict)

History: A single 305 g stone was found in 2007 by Romano Serra.

Physical characteristics: The main mass has a small portion of a black fusion crust.

Petrography: (V.Moggi Cecchi, G.Pratesi, S.Caporali, MSP) Polymict breccia of fine- and coarse-grained regions. The coarse-grained areas consist of plagioclase and clinopyroxene crystals to 1.6 mm. Fine-grained regions show clino- and orthopyroxene clasts set in fine-grained matrix of unexsolved Fe-rich pigeonite, exsolved pigeonite (orthopyroxene with augite lamellae) and maskelynitized calcic plagioclase. Minor phases include ilmenite and Al-Ti-chromite. Exsolved pyroxene grains show alternating fine low-Ca pyroxene and augite lamellae (2 to 9 μm).

Geochemistry: Maskelynite An78.7-88.5Or0.47-1.46; Low-Ca pyroxene Fs32.3-37.7En53.2-59.5Wo2.8-14.5 (Fe/Mn=26.8-33); Augite lamellae Fs35.7-44-7En28.4-30-9Wo24.5-35.9 (Fe/Mn=30.4-35.7); unexsolved pigeonite, Fs55.3-59.8En32.1-34.6Wo5.6-12.6 (Fe/Mn=32.2-35.9).

Classification: Achondrite (eucrite, polymict) with high degree of shock and low degree of weathering.

Specimens: A total of 60 g specimen and one thin section are on deposit at MSP (MSP 5104). OAM holds the main mass.

Data from:
  Table 0
  Line 0:
State/Prov/County:Al Jufrah
Mass (g):305
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):32.3-37.7, mean 37.7
Wollastonite (mol%):2.8-14.5, mean 6.9
Classifier:Vanni Moggi Cecchi, Stefano Caporali, Giovanni Pratesi, MSP
Type spec mass (g):60
Type spec location:MSP
Main mass:OAM
Finder:Romano Serra
Comments:Submitted by Vanni Moggi Cecchi
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022)
OAM: Museo del Cielo e della Terra Vicolo Baciadonne 1 40017 San Giovanni in Persiceto ( BO) Italy Osservatorio Astronomico e Museo "Giorgio Abetti", San Giovanni Persiceto, Bologna, Italy; Website (institutional address; updated 31 Oct 2012)
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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     Recommended::   (27° 22' 48"N, 16° 28' 8"E)

     This is 1 of 1046 approved meteorites from Al Jufrah, Libya
     This is 1 of 1537 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)
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