TISSINT

Classification: Achondrite (Martian, olivine-phyric shergottite)

History: At about 2 am local time on July 18, 2011, a bright fireball was observed by several people in the region of the Oued Dra valley, east of Tata, Morocco. One eyewitness, Mr Aznid Lhou, reported that it was at first yellow in color, and then turned green illuminating all the area before it appeared to split into two parts. Two sonic booms were heard over the valley. In October 2011, nomads began to find very fresh, fusion-crusted stones in a remote area of the Oued Dra intermittent watershed, centered about 50 km ESE of Tata and 48 km SSW of Tissint village, in the vicinity of the Oued El Gsab drainage and also near El Gadat plateau known as Hmadat Bo Rba ine. The largest stones were recovered in the El Gadat plateau, whereas the smallest one (a few grams) closer to the El Aglb Mountains. One 47 g crusted stone was documented as being found at 2928.917 N, 736.674 W.
Physical characteristics: Several fusion-crusted stones have been collected ranging from 1 to 987 g, with a total weight of around 7 kg. The stones are almost completely coated by glistening black fusion crust, characterized by thicker layers on exterior ridges as well as much glossier regions (above interior olivine macrocrysts). Some stones have thinner secondary fusion crust on some surfaces. The crust on some stones has been broken in places to reveal the interior, which appears overall pale gray in color with larger, very pale yellow olivine macrocrysts, and sporadic small pockets and some very thin veinlets of black glass. No terrestrial weathering is evident.
Petrography: (A. Irving and S. Kuehner, UWS): Olivine macrocrysts (to 1.5 mm) and microphenocrysts (to 0.4 mm) are set in a finer groundmass of patchily zoned pyroxene, plagioclase (maskelynite), Ti-poor chromite, ilmenite, pyrrhotite and minor merrillite. Both the larger olivine macrocrysts and smaller olivine microphenocrysts exhibit thin ferroan rims against the groundmass, and contain tiny chromite inclusions. Narrow ferroan zones also occur within the interior of some olivine macrocrysts.
Geochemistry: Olivine (cores of large macrocrysts Fa19.4-20.2, Fe/Mn=42-44; rims Fa43.2-60.4, Fe/Mn=50-55), cores of microphenocrysts Fa29.1-30.2, Fe/Mn=45-46; rims up to Fa53.3, Fe/Mn=53), orthopyroxene cores (Fs24.0-24.4Wo4.1-4.6, Fe/Mn=30-32), pigeonite (Fs26.1-51.6Wo11.9-16.9, Fe/Mn=31-35), subcalcic augite (Fs21.7-23.3Wo25.0-24.2, Fe/Mn=26-28), plagioclase (An61.1-64.3Or0.5-0.4). Oxygen isotopes (R. Tanaka, OkaU): analyses of acid-washed subsamples by laser fluorination gave, respectively d17O = 2.849, 2.892; d18O = 4.844, 4.943; ?17O = 0.299, 0.290 per mil. Bulk composition (G. Chen and C. Herd, UAb) ICPMS analysis of powdered interior material gave Sm/Nd=0.646, indicating that this specimen has affinities with the depleted compositional group of shergottites.

New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C03
Weight : 16.1g
Price on request
ID:Tissint-C06
Weight : 8.120g
Price on request
ID:Tissint-C07
Weight : 13,67g
Price on request
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C08
Weight : 5.134g
Price : 3337.10 EUR
ID:Tissint-C09
Weight : 3.710g
Price : 2411.50 EUR
ID:Tissint-C11
Weight : 3.226g
Price : 2097 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C13
Weight : 2.678g
Price : 1740.70 EUR
ID:Tissint-C15
Weight : 2.408g
Price : 1565.20 EUR
ID:Tissint-C17
Weight : 1.804g
Price : 1172.60 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C18
Weight : 1.568g
Price : 1019.20 EUR
ID:Tissint-C19
Weight : 1.446g
Price : 940 EUR
ID:Tissint-C20
Weight : 1.004g
Price : 652.60 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C21
Weight : 0.990g
Price : 643.50 EUR
ID:Tissint-C22
Weight : 0.910g
Price : 591.50 EUR
ID:Tissint-C23
Weight : 0.866g
Price : 563 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C24
Weight : 0.804g
Price : 522.60 EUR
ID:Tissint-C25
Weight : 0.796g
Price : 517.40 EUR
ID:Tissint-C29
Weight : 0.612g
Price : 398 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C31
Weight : 0.532g
Price : 345.80 EUR
ID:Tissint-C32
Weight : 0.530g
Price : 344.50 EUR
ID:Tissint-C33
Weight : 0.494g
Price : 321.10 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C34
Weight : 0.426g
Price : 277 EUR
ID:Tissint-C35
Weight : 0.422g
Price : 274.30 EUR
ID:Tissint-C36
Weight : 0.416g
Price : 270.40 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C38
Weight : 0.302g
Price : 196.30 EUR
ID:Tissint-C39
Weight : 2.674g
Price : 1738 EUR
ID:Tissint-C40
Weight : 1.816g
Price : 1180.40 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C41
Weight : 1.788g
Price : 1162.20 EUR
ID:Tissint-C42
Weight : 1.566g
Price : 1018 EUR
ID:Tissint-C43
Weight : 1.514g
Price : 984 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C44
Weight : 1.186g
Price : 771 EUR
ID:Tissint-C45
Weight : 1.138g
Price : 740 EUR
ID:Tissint-C46
Weight : 0.678g
Price : 441 EUR
New Fall Shergottite Meteorites New Fall Shergottite Meteorites New Fall Shergottite Meteorites
ID:Tissint-C47
Weight : 0.602g
Price : 391.30 EUR
ID:Tissint-C48
Weight : 0.466g
Price : 303 EUR
ID:Tissint-C50
Weight : 0.430g
Price : 279.50 EUR
New Fall Shergottite Meteorites
ID:Tissint-C51
Weight : 0.362g
Price : 235.30 EUR