Lot 33
Lot Has Ended


Mesosiderite — B4
Timbuktu, Mali (16°47’23”N, 3°0’15” W)
Price Realised: USD 3250.00
Estimate : USD 3,000 - 5,000

The meteorite’s external surface delimits this softly triangular complete slice. The cut and polished face reveals a mixture of segregated russet-bronze silicates, iron-nickel flakes & nodules and centimeter-sized yellow-green pyroxene aggregates along with two notable nodules for iron-nickel. There is minimal brecciation. Modern cutting.
107 x 154 x 4mm. (4¼ x 6 x ⅛in.)

145.9g. (⅓lbs)

Please note this lot is the property of a private individual.

The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in a perfect condition. Lots are sold in the condition they are in at the time of sale.

Overall in excellent condition. Please note that weights and dimensions are approximate only and that the appearance and surfaces of meteorites might change if not appropriately cared for. Proper handling and correct humidity control are easy to accommodate and will ensure condition is maintained, please contact the department if you would like further advice on how to live with meteorites in your collection.

Lot Essay

Meteorites are named after the places to which they have been “delivered”. Originating in the asteroid belt between Jupiter and Mars, the meteorite from which this complete slice is derived landed in Timbuktu and was discovered in 2015 when an unusual rock was found by a local resident. A Moroccan meteorite dealer happened to be visiting Timbuktu, recognized the rock as a meteorite and bought it from the finder. Mesosiderites are a class of stony-iron meteorites that consist of roughly equal parts of metallic nickel-iron and silicate. There are only four mesosiderites with the B4 designation, which indicates the abundances of different minerals and the degree of recrystallization. Unlike pallasites, which formed at the boundary of the stony mantle and molten core of an asteroid that was later disrupted by a collision, the formation of mesosiderites is less well understood. One leading model is that this material formed when the semi-molten core of one asteroid collided with the basaltic surface of a larger asteroid.

Christie's would like to thank Dr. Alan E. Rubin at the Institute of Geophysics and Planetary Physics, University of California, Los Angeles for his assistance in preparing this catalog note.

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