Tissint Martian Meteorite 0. 085g / 85mg Fragment Of The Planet Mars
Item History & Price
| Reference Number: Avaluer:31677746 |
TISSINT
MARTIAN METEORITE OLIVINE-PHYRIC SHERGOTTITE
0.085 GRAM FRAGMENT
THIS WONDERFUL TISSINT FRAGMENT WAS BROUGHT BACK FROM ME IN PERSON DURING JANUARY 2012 WHEN I LEAD A TEAM OF METEORITE HUNTERS TO RECOVER FRESH SPECIMENS. UPON ARRIVAL AT THE STREWN FIELD I CONSULTED WITH THE NOMADS AND RECORDED NEARLY COMPLETE GPS COORDINATES FOR THE TISSINT METEORITE FALL, HELPING TO PRESERVE THE IMPORTANT HISTORY ASSOCIATED WITH THIS RARE ...MARTIAN METEORITE. THIS FRAGMENT ORIGINATED FROM ONE OF THE IMPACT LOCATIONS I RECORDED AND PHOTOGRAPHED WITH THE HELP OF MY TEAM. THIS TISSINT FRAGMENT IS A HISTORICAL AND RARE DOCUMENTED MARTIAN METEORITE FALL OFFERING IMPECCABLE PROVENANCE FOR YOUR COLLECTION.
TISSINTTissint 29°28.917?N, 7°36.674?WHistory: (H. Chennaoui Aoudjehane, FSAC, and A. Aaronson) At about 2 am local time on July 18, 2011, a bright fireball was observed by several people in the region of the Oued Drâa 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 Drâa intermittent watershed, centered about 50 km ESE of Tata and 48 km SSW of Tissint village, in the vicinity of the Oued El Gsaïb drainage and also near El Ga?ïdat plateau known as Hmadat Boû Rba? ine. The largest stones were recovered in the El Ga?ïdat plateau, whereas the smallest one (a few grams) closer to the El Aglâb Mountains. One 47 g crusted stone was documented as being found at 29°28.917? N, 7°36.674? 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 ?17O = 2.849, 2.892; ?18O = 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.Classification: Achondrite (Martian, olivine-phyric shergottite).Specimens: A total of 30.3 g of type material and one polished thin section are on deposit at UWS. Other known institutional specimens include 370 g (ASU), 58 g (UAb), and 108 g (UNM). The remaining material is held by anonymous dealers and collectors.
GUARANTEED AUTHENTICITY
Member of the Meteoritical Society & International Meteorite Collectors Association #9822 The authenticity of this meteorite comes with a 100% guarantee. Signed Certificate of Authenticity included. First class delivery and provenance provided. 1cm scale cube for reference purposes.SHIPPING: Please request the total for multiple items to receive a combined invoice.
00178
MARTIAN METEORITE OLIVINE-PHYRIC SHERGOTTITE
0.085 GRAM FRAGMENT
THIS WONDERFUL TISSINT FRAGMENT WAS BROUGHT BACK FROM ME IN PERSON DURING JANUARY 2012 WHEN I LEAD A TEAM OF METEORITE HUNTERS TO RECOVER FRESH SPECIMENS. UPON ARRIVAL AT THE STREWN FIELD I CONSULTED WITH THE NOMADS AND RECORDED NEARLY COMPLETE GPS COORDINATES FOR THE TISSINT METEORITE FALL, HELPING TO PRESERVE THE IMPORTANT HISTORY ASSOCIATED WITH THIS RARE ...MARTIAN METEORITE. THIS FRAGMENT ORIGINATED FROM ONE OF THE IMPACT LOCATIONS I RECORDED AND PHOTOGRAPHED WITH THE HELP OF MY TEAM. THIS TISSINT FRAGMENT IS A HISTORICAL AND RARE DOCUMENTED MARTIAN METEORITE FALL OFFERING IMPECCABLE PROVENANCE FOR YOUR COLLECTION.
TISSINTTissint 29°28.917?N, 7°36.674?WHistory: (H. Chennaoui Aoudjehane, FSAC, and A. Aaronson) At about 2 am local time on July 18, 2011, a bright fireball was observed by several people in the region of the Oued Drâa 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 Drâa intermittent watershed, centered about 50 km ESE of Tata and 48 km SSW of Tissint village, in the vicinity of the Oued El Gsaïb drainage and also near El Ga?ïdat plateau known as Hmadat Boû Rba? ine. The largest stones were recovered in the El Ga?ïdat plateau, whereas the smallest one (a few grams) closer to the El Aglâb Mountains. One 47 g crusted stone was documented as being found at 29°28.917? N, 7°36.674? 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 ?17O = 2.849, 2.892; ?18O = 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.Classification: Achondrite (Martian, olivine-phyric shergottite).Specimens: A total of 30.3 g of type material and one polished thin section are on deposit at UWS. Other known institutional specimens include 370 g (ASU), 58 g (UAb), and 108 g (UNM). The remaining material is held by anonymous dealers and collectors.
GUARANTEED AUTHENTICITY
Member of the Meteoritical Society & International Meteorite Collectors Association #9822 The authenticity of this meteorite comes with a 100% guarantee. Signed Certificate of Authenticity included. First class delivery and provenance provided. 1cm scale cube for reference purposes.SHIPPING: Please request the total for multiple items to receive a combined invoice.
00178
