Shergottites
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
1998
Mass
2.02 kg
[Museum Collection]
(1) 21.8g
This is 1 of 295 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Search for this meteorite in the Natural History Museum collection (U.K.): Published in Meteoritical Bulletin, no. 83, MAPS 34, A169-A186 (1999)
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
1999
Mass
4.01kg
[Museum Collection]
(1) 0.29g
This is 1 of 333 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
1999
Mass
1344 g
[Museum Collection]
(1) 15.1g (2) 5.892g
This is 1 of 295 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Search for this meteorite in the Natural History Museum collection (U.K.): Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
2022
Mass
6.9 kg
[Museum Collection]
(1) 103.1g
History: Mark Lyon and Robert Ward purchased this meteorite from Aziz Habibi in 2022. This meteorite was found approximately 90 km east of the Wafa Oil Field and 100 km south of the geyser hot springs at Wadi Harakat. Physical characteristics: Single stone, exterior with patches of dark fusion crust and patches of brown-green from weathering and exposed interior minerology. Saw-cut surfaces reveal light colored domains of pyroxene poikilitically enclosing smaller darker olivines, and are bounded by groundmass darker olivine dominated zones. Petrography: (C. Agee and A. Ross, UNM) Reflected light microscopy and electron microprobe analysis show this meteorite to be a plagioclase (maskelynite) lherzolite with a poikilitic texture. Major phases are pigeonite, augite, olivine, and maskelynite. Minor phases include chromite, Cr-Ti spinel, ilmenite, and troilite. Geochemistry: (A. Ross, UNM) Olivine Fa30.9±0.9, Fe/Mn=54±3, n=5; pigeonite Fs23.0±2.7Wo5.3±2.9, Fe/Mn=30±3, n=7; augite Fs14.8±0.2Wo34.9±0.6, Fe/Mn=24±2, n=3; maskelynite An48.7±5.3Ab49.4±4.9Or1.8±0.4, n=4. Classification: Martian lherzolitic shergottite (aka poikilitic shergottite). The poikilitic texture of this meteorite strongly resembles NWA 1950. Specimens: 21.6 g on deposit at UNM, Mark Lyon and Robert Ward hold the main mass.
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
1962
Mass
18 kg
[Museum Collection]
(1) 3.3g
This is 1 of 294 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Search for specimens in the Smithsonian Institution collection (U.S.): Search for this meteorite in the Natural History Museum collection (U.K.): References: Never published in the Meteoritical Bulletin
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
2001
Mass
577 g
[Museum Collection]
(1) 0.370g
This is 1 of 333 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
2001
Mass
812 g
[Museum Collection]
(1) 0.230g
This is 1 of 295 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
2005
Mass
70.1 g
[Museum Collection]
(1) 7.418g (2) 4.678g (3) 4.178g
(4) 3.080g (5) 3.004g (6) 2.975g
(7) 2.508g (8) 2.286g (9) 1.904g
History: A minimally weathered fully encrusted whole stone of 70.1 g was purchased in Erfoud, Morocco, by M. Farmer in November 2005. Petrography: (T. Bunch and J. Wittke, NAU; A. Irving, UWS) A medium-grained (<3.1 mm greatest dimension) basaltic shergottite that consists of ~57.3 vol% augite and pigeonite pyroxenes, and 38.3 vol% plagioclase (present as shock-formed maskelynite and glasses) with minor opaques (2.7 vol%) and phosphates (1.7 vol%) arranged in a weakly foliated subophitic to granular texture. Accessory phases include ulvöspinel, ilmenite, chlorapatite, merrillite, pyrrhotite, Si-Al-Na-K-rich glasses, and baddeleyite. Vesicular black glass veins (
Name
*click on the Name for more information
Structure Class
achondrites
Chemical Class
Martian (shergottite)
Country
Year found
2006
Mass
201 g
[Museum Collection]
(1) 1.668g
History: Three partially crusted stones with a weight of 201 g were purchased in Erfoud, Morocco, in 2006. Petrography: (T. Bunch and J. Wittke, NAU): A basaltic shergottite that contains 54 vol% Ca-pyroxene (pigeonite and augite), 41 vol% plagioclase (maskelynite) and minor ulvöspinel, ilmenite, merrillite, chlorapatite, pyrrhotite, and K-Si-rich, late stage glasses. Pyroxene shows mottled compositional zoning. Dark, shock pocket glasses and veins are also present. A few melt inclusions of K-Si-rich glass, phosphates, ferroan pigeonite, and ilmenite were found in ulvöspinel. Geochemistry: Pigeonite Fs37.4-53.8Wo10.8-15.8 (FeO/MnO = 34); augite Fs27.8-40.6Wo33.4-36.0; maskelynite An54.7Or1.6. Oxygen isotopes (D. Rumble, CIW): Replicate analyses of acid-washed whole rock samples by laser fluorination gave, respectively δ18O = 4.65, 4.59, 4.45, 4.78, δ17O = 2.73, 2.67, 2.58, 2.80, Δ17O = 0.280, 0.260, 0.240, 0.284 (all permil). Bulk composition (ICPMS, C. Herd, UAb): (mean of 2 replicate analyses, in ppm) La 0.97, Ce 2.32, Nd 1.70, Sm 0.71, Eu 0.43, Gd 1.71, Dy 1.12, Yb 0.85, Lu 0.12, Hf 1.07, Ba 21, Cr 646, V 236, Ni 47, Co 29. Classification: Martian (shergottite) with an "enriched" chondrite-normalized rare earth element pattern, and probably paired with NWA 2975 and related stones. Low weathering grade and a moderate shock level. Specimens: 21.3 g is on deposit at NAU*. MFarmer and Strope are the main mass holders.