Tissint  29°28.917’N, 7°36.674’W 

Martian - Mars- Meteorite

Country: Nord-West-Afrika, Tata, Morocco

Fell: 18 July 2011

Type: Stone Martian olivine-phyric shergottite

Total known weight: 7.00 Kg

Tissint Martian " Witness Fall "

Reported: Meteoritical Bulletin Database No. 100, 2011.

History: (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 Fa_19.4-20.2, Fe/Mn=42-44; rims Fa_43.2-60.4, Fe/Mn=50-55), cores of microphenocrysts Fa_29.1-30.2, Fe/Mn=45-46; rims up to Fa_53.3, Fe/Mn=53), orthopyroxene cores (Fs_24.0-24.4Wo_4.1-4.6, Fe/Mn=30-32), pigeonite (Fs_26.1-51.6Wo_11.9-16.9, Fe/Mn=31-35), subcalcic augite (Fs_21.7-23.3Wo_25.0-24.2, Fe/Mn=26-28), plagioclase (An_61.1-64.3Or_0.5-0.4). Oxygen isotopes (R. Tanaka, OkaU): analyses of acid-washed subsamples by laser fluorination gave, respectively δ¹⁷O = 2.849, 2.892; δ¹⁸O = 4.844, 4.943; Δ¹⁷O = 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.

 Tissint

A 147g Tissint meteorite with spectacular

 fusion crust and slightly oriented shape.

Martian, olivine-phyric shergottite

Photo: Tissint Martian

Fell 18 July 2011, Tata/Morocco
Copyright © 2012 by Chladni´s Heirs.

All Rights Reserved

Info:

Martian meteorite compendium NASA

List of known Martian meteorites from NASA

I refer my meteorites directly from the Meteoritehunter. Therefore: “Authenticity guarantees” always “ 1a goods and Top quality"

Description:

Here I offer a New Martian Meteorite a "Witness Fall 2011" a interesting and beautifully designed collector's item of the

"Tissint Martian".

An enrichment for each collection, and certainly a nice piece for entry into the martian business.

The TISSINT MARTIAN has a size of: 2.00 x 2.00 mm and a weight of: 0.012gr.

"MARTIAN COLLECTION TISSINT"

The delivery of the martian is made at a specially designed box Special from the "MARTIAN COLLECTION TISSINT", which consist of a variety of designs of the Mars missions. Supplied with authenticity certificate and guarantee that it is indeed classified mars rocks.
The Special box has the dimensions: 5.50 x 3.50 cm

Each display case is an enrichment and an increase in value for each collection.

 Tissint

  Mars Rock

For everyone the opportunity,

to acquire a new
" Mars Witness Fall "
a part from the red planet

 Tissint 

Martian - Mars- Meteorite

Tissint  29°28.917’N, 7°36.674’W 

Country: Nord-West-Afrika, Tata, Morocco

Fell: 18 July 2011

Type: Stone Martian olivine-phyric shergottite

Total known weight: 7.00 Kg

A rare piece of Mars for each collection!

Mars

"The red planet"

Credit NASA

Mars Phoenix Lander and Rocks.

 The Phoenix lander prepares to grate some Martian rocks.

Credit NASA

The phenomenon is known in psychological circles as pareidolia -

essentially seeing human features, particularly faces, where there are none.

This is why we can see faces (or the Starship Enterprise) in clouds and ink blots.

The same applies to faces in Martian hills and this newly discovered sculpture

 sitting near the Spirit rover while it weathered the Martian winter atop a plateau.

Credit NASA

Rocks at the Mars Pathfinder landing site Although covered by red iron oxide dust,

the rocks themselves are gray.

Credit NASA JPL