On Offer: CI1 - 1.6g Oued Chebeika 002 carbonaceous chondrite meteorite fragments viel

Official Name: Oued Chebeika 002

Type: CI1 Carbonaceous Chondrite

Observed fall: No

Description: This 1.6 gram viel of the CI1 Oued Chebeika 002 carbonaceous chondrite meteorite contains ~ 200+ individual fragments (actually more, I just stopped counting at 200!), each with the potential resale value of $25 to $50 each as micro specimen examples.

Oued Chebieka 002 is an example of one of the rarest and most sought after carbonaceous chondrite sub-classes in existence. Often referred to as the "holy grail" of meteorites, the CI1 has a petrologic grade of "1", hence the 1 in the CI1 sub class name. This designation, unlike the partially altered CM2 chondrites, indicates that the CI1 carbonaceous chondrites have been almost entirely altered by indigenous water while still on its parent asteroid.

The CI1 chondrites are physical proof that at least some of the C-type asteroids within our solar system have or have had liquid water in them, and that this water has altered the silicates of the CI1 into hydrous phyllosilicates as well as the kamacite into magnetite framboids. These types of hydrous alterations are well established indicators that the material in the chondrite has been exposed to liquid water while in situ within its parent asteroid.

BSE Images taken during analysis and confirmation at the University of
Colorado Boulder's EPMA lab of the group of CI1 fragments that this
CI1 fragment comes from.

Taking a break to say hi while working on the analysis and classification of
meteorites in the microprobe (EPMA) lab at the University of Colorado Boulder.

History: The fragments were found close to the village of Abteh, Morocco, on June 6, 2024.

What you get: 1.6g Oued Chebeika 002 Carbonaceous Chondrite Meteorite fragments viel as shown, Storage/Display Box, & signed Certificate of Authenticity.

I offer a 100% no questions asked 30 day return policy.

SEE OFFICIAL METEORITICAL BULLETIN DATABASE ENTRY

Oued Chebeika 002

Basic information

Name: Oued Chebeika 002
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2024
Country: Morocco
Mass: 418 g

Classification
history:

Recommended:

CI1

This is 1 of 10 approved meteorites classified as CI1.

Comments:

Approved 22 Oct 2024
Revised 2 Dec 2024: Updated mass and text

Writeup

Writeup from MB 113:

Oued Chebeika 002 28°5’34.45"N, 11°32’10.34"W

South, Morocco

Find: 2024 Jun 20

Classification: Carbonaceous chondrite (CI1)

History: The fragments were found close to the village of Abteh, Morocco, on June 6, 2024. Six fragments, including a 33.9 g stone and crusted fragments were bought by Jean Redelsperger from Mohamed Elguirah later in 2024. Luc Labenne acquired the main mass (a 136.4 g crusted stone, and 35.76 g of fragments detached from this stone). In November 2024, Mark Lyon acquired 120 g of material, and Ziyao Wang acquired 47.7 g of material, both in the form of mm-sized fragments. Jeremy Bassemon later acquired 5 g in the form of mm-sized fragments. In December 2024, Jean Redelsperger acquired 9 additionnal fragments totalling 28.5 g.

Physical characteristics: Black, friable irregular stones. Whitish grains up to mm size are visible at the surface. Some fragments display fusion crust. Broken surfaces show a black interior with visible iron sulfide grains.

Petrography: (J. Gattacceca, B. Devouard, CEREGE) Observation of a polished section show a groundmass of fine-grained phyllosilicates with abundant magnetite and iron sulfides. Chondrules or their pseudomorphs were not observed. Magnetite is present as framboids and plaquettes. Pyrrhotite is present as euhedral grains to 30 µm. Other minerals: carbonates (ferriferous dolomite) to 50 µm, Ca-phosphates. The meteorite contains clasts to 200 µm that are distinguished from the groundmass by variable opaque mineral content. X-ray diffraction of a powdered 10 mg sample (D. Borschneck, CEREGE) confirms the mineralogy determined by optical and backscattered electron observations, with the presence of the following minerals: clay minerals, magnetite, pyrrhotite, and minor pentlandite, dolomite, and apatite. X-ray diffraction of the clay fraction indicates smectite and serpentine. Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.83, measured on a 32 g stone, is in the upper range of other CI chondrites, most similar to that of Orgueil that has log χ = 4.78±0.05 (n=9) Rochette et al., 2008, and close to the value measured for Ryugu material (Maurel et al., 2024). This magnetic susceptibility value indicates a magnetite content of about 10 wt%.

Geochemistry: Oxygen isotopic composition (D. Au Yang, J. Gattacceca, CEREGE) from analysis of a 3.40 mg bulk sample is δ¹⁷O=8.81‰, δ¹⁸O=15.34‰, Δ¹⁷O=0.83‰ (slope 0.52, analytical uncertainties 0.115‰, 0.062‰, 0.005‰ respectively). Defocused electron microprobe analyses of the matrix: analytical totals 81.8±4.9 wt%, SiO₂ 34.0±2.5 wt%, MgO 22.0±1.6 wt%, FeO 16.0±1.2 wt%, Al₂O₃ 2.35±0.33, Na₂O 1.03±0.24, NiO 1.74±0.50, S 3.81±1.55 (n=3).

Classification: Carbonaceous chondrite (CI1). The CI group is supported by the mineralogy and oxygen isotopic composition. Type 1 designation supported by the absence of anhydrous silicates.

Specimens: Type specimen at CEREGE (22.7 g). The polished sections in CEREGE were prepared following Wilson et al. (2024). 5 g at ASU, 6 g a polished thin section and a polished mount at UWB (with work names LAB24-2 and LABMET24JUL24), 4 g in UNM. Material with Jean Redelsperger, Luc Labenne, Mark Lyon, Ziyao Wang, and Jeremy Bassemon.

Bibliography:

Maurel C., Gattacceca J. and Uehara M. (2024) Hayabusa 2 returned samples reveal a weak to null magnetic field during aqueous alteration of Ryugu’s parent body. Earth and Planetary Science Letters 627, 118559. (link)
Rochette P., Gattacceca J., Bonal L., Bourot-Denise M., Chevrier V., Clerc J.-P., Consolmagno G., Folco L., Gounelle M., Kohout T., Pesonen L., Quirico E., Sagnotti L., and Skripnik A. (2008) Magnetic classification of stony meteorites: 2. Non-ordinary chondrites. Meteorit. Planet. Sci. 43, 959–980. (link)
Wilson B. J. K., Di Cecco V. E., Garvie L. A. J., Tait K. T. and Daly M. G. (2024) A sample preparation guide for clay-rich carbonaceous chondrites. Meteoritics & Planetary Science 59, 560–567. (link)

Data from:
  MB113
  Table 0
  Line 0:

State/Prov/County:	South
Place of purchase:	Morocco
Date:	2024 Jun 20
Latitude:	28°5'34.45"N
Longitude:	11°32'10.34"W
Mass (g):	418
Pieces:	many
Class:	CI1
Weathering grade:	low
Magnetic suscept.:	4.83
Classifier:	J. Gattacceca, B. Devouard, CEREGE
Type spec mass (g):	22.7
Type spec location:	CEREGE
Main mass:	Jean Redelsperger, Mark Lyon, Luc Labenne
Finder:	anonymous
Comments:	work name JR139; submitted by Jerome Gattacceca

Plots:

O isotopes: