Natural History
Natural History
Iron – ungrouped, Chihuahua, Mexico
No reserve
Auction Closed
July 26, 08:15 PM GMT
Estimate
1,500 - 2,500 USD
Lot Details
Description
Tres Castillos — Complete Slice
Iron – ungrouped
Chihuahua, Mexico (29° 28' 12"N, 105° 48' 0"W)
181 x 110 x 5 mm (3⅕ 4⅓ x ⅕ in). 498 grams (1.09 lb).
Like all iron meteorites, the current offering is more than four billion years old and originates from the asteroid belt between Jupiter and Mars. Although Tres Castillos was originally classified as being a member of the IIIAB group of iron meteorites in the 77th edition of the Meteoritical Bulletin, its gallium/germanium ratio is much higher than that of other IIIAB group members. As such, it is now one of the special 147 ungrouped iron meteorites currently listed in the Meteoritical Bulletin Database.