BEST LOT!!! TOP PIECES!!!
Hello, up for sale is my newest classification, "Hassi Khebi 001," classified as an ultra rare C3-ungrouped. This gorgeous 5 fragment lot weighs 6.762 grams and consists of 3 endcuts and 2 individuals all with fusion crust. Dark gray/black fusion-crusted exterior, saw cut surface reveals scattered well-formed chondrules set in a black matrix that makes up over 50% of this meteorite. Some of the chondrules appear to have orange iron-staining. Rare small CAIs are visible. Electron microprobe examination reveals a fine-grained matrix that gives slightly low microprobe totals (~95%) consistent with the absence of significant hydrous phases. Most chondrules are porphyritic type I with predominantly forsteritic olivines and enstatitic pyroxenes. Apparent mean chondrule diameter is 275±227 μm (n=50). Kamacite and Fe-Ni sulfide are the dominant opaque phases. Cr-magnetite was not detected. Vesicular fusion crust is 200-300 µm thick.
Classification: Carbonaceous chondrite ungrouped (C3). Oxygen isotopic compositions are significantly displaced below the CCAM, indicating ungrouped carbonaceous chondrite. Type 3 is based on a predominantly anhydrous matrix and Cr2O3 content of olivine.
This meteorite comes with a COA card and display case. Thanks for your interest and take care.
***Calcium aluminum inclusions (CAIs) are white, millimeter-sized objects found, often together with chondrules, in the most primitive kinds of chondrite meteorites, notably some types of carbonaceous chondrite. They consist of high-temperature minerals, including silicates and oxides of calcium, aluminum, and titanium.
In 2002, an international team of scientists accurately dated CAIs at 4.57 billion years, making them the oldest known objects in the solar system. The same team found that chondrules, another of the earliest relics of the solar system, are 2 to 3 million years younger than CAIs. Both types of object formed when dusty regions of the solar nebula were heated to high temperatures. The dust melted and then crystallized, forming first CAIs and then chondrules. Larger objects, like asteroids and planets, formed about 10 to 50 million years later***
Name: Hassi Khebi 001
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Algeria
Mass: 500 g
Hassi Khebi 001
Basic informationName: Hassi Khebi 001
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Algeria
Mass:help 500 g
Classification
history:
Recommended: C3-ung [explanation]
This is 1 of 29 approved meteorites classified as C3-ung. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), and Ungrouped chondrites
Comments:Approved 29 Sep 2023
Writeuphelp
Writeup from MB 112:
Hassi Khebi 001 29°09’28.3"N, 4°55’43.3"W
Tindouf, Algeria
Purchased: 2022
Classification: Carbonaceous chondrite (C3, ungrouped)
History: Purchased by Matthew Stream from an Algerian meteorite dealer in August 2022. Found approximately 15 km southeast of Hassi Khébi in Tindouf Province, Algeria.
Physical characteristics: Dark gray/black fusion-crusted exterior, saw cut surface reveals scattered well-formed chondrules set in a black matrix that makes up over 50% of this meteorite. Some of the chondrules appear to have orange iron-staining. Rare small CAIs are visible.
Petrography: (C. Agee and M. Spilde, UNM) Electron microprobe examination reveals a fine-grained matrix that gives slightly low microprobe totals (~95%) consistent with the absence of significant hydrous phases. Most chondrules are porphyritic type I with predominantly forsteritic olivines and enstatitic pyroxenes. Apparent mean chondrule diameter is 275±227 μm (n=50). Kamacite and Fe-Ni sulfide are the dominant opaque phases. Cr-magnetite was not detected. Vesicular fusion crust is 200-300 µm thick.
Geochemistry: (M. Spilde and C. Agee, UNM) Type I chondrule olivine Fa1.3±1.4, Cr2O3=0.34±0.16 (wt%) n=24; low-Ca pyroxene Fs1.6±0.8Wo1.6±1.5, n=9; matrix (20 μm defocused microprobe beam) SiO2=31.5±5.3, TiO2=0.32±0.66, Cr2O3=0.43±0.14, Al2O3=4.4±3.6, FeO=29.6±9.7, MgO=15.7±3.7, CaO=3.0±3.4, NiO=1.6±0.3, MnO=0.21±0.07, Na2O=0.18±0.05, K2O=0.27±0.15, SO3=7.3±3.6 (all wt%), n=7., with total around 95 wt% not consistent with significant hydrous phases being present. Fusion crust, proxy from bulk composition (20 µm defocused microprobe beam) SiO2=43.5±2.5, TiO2=0.17±0.01, Cr2O3=0.58±0.04, Al2O3=4.2±0.5, FeO=19.5±4.0, MgO=28.2±2.5, CaO=3.1±0.3, NiO=0.10±0.07, MnO=0.35±0.01, Na2O=0.83±0.12, K2O=0.07±0.01 (all wt%), n=7. Oxygen isotopes (K. Ziegler, UNM): 3 acid-washed fragments analyzed by laser fluorination gave δ17O=-6.509,-7.235,-9.497; δ18O=-1.497, -2.483, -5.165 (all ‰).
Classification: Carbonaceous chondrite ungrouped (C3). Oxygen isotopic compositions are significantly displaced below the CCAM indicating ungrouped carbonaceous chondrite. Type 3 based on a predominantly anhydrous matrix and Cr2O3 content of olivine.
Specimens: 20 g on deposit at UNM, Matthew Stream holds the main mass.
Data from:
MB112
Table 0
Line 0:
State/Prov/County:Tindouf
Place of purchase:Algeria
Date:P 2022
Latitude:29°09'28.3"N
Longitude:4°55'43.3"W
Mass (g):500
Pieces:Many
Class:C3-ung
Shock stage:low
Weathering grade:low
Fayalite (mol%):1.3±1.4
Ferrosilite (mol%):1.6±0.8
Wollastonite (mol%):1.6±1.5
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Matthew Stream
Comments:Submitted by C. Agee