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Mont Tessalit 001
Basic information Name: Mont Tessalit 001
     This is an OFFICIAL meteorite name.
Abbreviation: MT 001
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 7 kg
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 217 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Mont Tessalit 001 (MT 001)        20º46.0667N, 5º6.65E

Tamanghasset, Algeria

Purchased: 2021

Classification: HED achondrite (Eucrite, brecciated)

History: Adrián Contreras Gómez (CRATER meteorites) purchased the samples from Ali Hnini in Tindouf, Algeria, on August 8, 2021.

Physical characteristics: Many samples ranging in size from 1 to 789 g. The studied sample is ovoid in shape, light gray in color and appears to be brecciated. A cut sample, shows the interior has a cataclastic texture composed of mineral fragments.

Petrography: Description and classification (A. Love, App) Sample is a cataclastic breccia composed of polycrystalline lithic clasts surrounded by coarse-grained (519 μm, n=50) fragments of plagioclase and pyroxene. Polycrystalline lithic fragments have abundant sulfide inclusions. Additional minerals are: phosphates, chromite and ilmenite.

Geochemistry: (A. Love, App) low Ca pyroxene (Fs63.2±1.1Wo3.9±1.2, Mg#34.3±1.0, Fe/Mn=31.0±0.5, n=11); pigeonite (Fs60.7±2.5Wo6.7±2.2, Fe/Mn=31.2±0.6, n=8); high Ca pyroxene (Fs33.2±5.8Wo39.4±6.4, Fe/Mn=31.0±1.3, n=11); plagioclase (An91.5±2.0Or0.3±0.1, n=5).

Classification: HED achondrite (eucrite) Textures and mineral compositions suggest sample is a monomict basaltic eucrite breccia.

Specimens: Adrián Contreras Gómez (CRATER meteorites) holds the 789 g main mass. A polished thin section and an individual weighing 24.87 g are on deposit at App.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Tamanghasset
Place of purchase:Tindouf, Algeria
Date:P 2021
Latitude:20º46.0667N
Longitude:5º6.65E
Mass (g):7000
Pieces:many
Class:Eucrite-br
Shock stage:M-S2
Weathering grade:low
Ferrosilite (mol%):63.2±1.1; 33.2±5.8
Wollastonite (mol%):3.9±1.2; 39.4±6.4
Classifier:A. Love, App
Type spec mass (g):24.87
Type spec location:App
Main mass:Adrián Contreras Gómez (CRATER Meteorites)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:

Algeria
Coordinates:
     Recommended::   (20° 46' 4"N, 5° 6' 39"E)

Statistics:
     This is 1 of 419 approved meteorites from Tamanghasset, Algeria (plus 2 unapproved names) (plus 2 impact craters)
     This is 1 of 1236 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)
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