Aletai meteorite, Aletai Prefecture (Altay Prefecture), Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture), Xinjiang Autonomous Region, China
|Latitude & Longitude (WGS84):||45° 52' 15'' North , 90° 30' 16'' East|
|Latitude & Longitude (decimal):||45.87111,90.50472|
|Locality type:||Meteorite Fall Location|
|Meteorite Class:||Anomalous IIIE iron meteorite|
|Meteoritical Society Class:||Iron, IIIE-an|
|Metbull:||View entry in Meteoritical Bulletin Database|
|Köppen climate type:||BWk : Cold desert climate|
|Other/historical names associated with this locality:||Akebulake; Ulasitai; Wuxilike; Xinjiang (b); Xingjiang 008|
Iron meteorite (fragment), octahedrite (IIIE; Om)
Discovered in 2004; mass of 430 kg
The Ulasitai meteoritical mass consists mainly of kamacite (76 vol%) accompanied by taenite (10 vol%) and plessite (~10 vol%). Schreibersite is the most abundant of the minor phases which also include troilite, cohenite, and daubréelite. Ulasitai is a fragment of the enormous 20 ton Xinjiang (Armanty) iron which had been previously discovered about 130 km away. Both the larger mass and the Ulasitai mass are marked by very distinctive siderophile abundances making Xinjiang (Armanty) members of the very small group of IIIE irons with only 15 members
At the official website for the Meteoritical Society, the name "Ulasitai meteorite" was discredited as a proper (unique) name once Ulasitai was shown to be paired with the Xinjiang (Armanty) iron meteorite. Cf. Meteoritical Bulletin, No. 95 (2009). There appears to be a preference for the name 'Xinjiang' in the Chinese literature, but the name 'Armanty' was adapted in Western scientific literature so that both synonyms appear in the literature today.
6 valid minerals.
Meteorite/Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Devonian - Cambrian|
358.9 - 541 Ma
|Paleozoic sedimentary rocks|
Age: Paleozoic (358.9 - 541 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.