Allan Hills A81101 Meteorite Quick Facts
- Name: Allan Hills A81101
- Year Discovered: 1981
- Approximate Recovery Location: Antarctica
- Precise Recovery Location: (-76.75139, 159.33361)
- Mass: 119.2 grams
- Classification: Ureilite
- Discovery Type: find
- Condition: Valid
More Details About the Allan Hills A81101 Meteorite
The Allan Hills A81101 meteorite was discovered in 1981. It was recovered in Antarctica (-76.75139, 159.33361). It has a mass of 119.2 grams.
Allan Hills A81101 is considered a “Valid” meteorite. “Valid” meteorites are typical meteorites with average weathering, while “relict” meteorites are those that have been extremely altered, either due to weathering over time or human intervention.
Allan Hills A81101’s official classification is Ureilite. A “Ureilite” is a type of stony meteorite that belongs to the ureilite group. These meteorites are unique because they are ultramafic and contain interstitial carbon in the form of graphite or diamond. Most ureilites consist of olivine and pigeonite, but some may have different pyroxenes, and a small portion are polymict breccias, which means they contain additional feldspathic material along with typical ureilitic components.
The Allan Hills A81101 meteorite is a “find” meteorite. Meteorites are classified as “falls” if they were observed falling and recovered, while “finds” are those discovered later, often weathered by longer exposure to Earth’s environment and without a record of being seen as they fell.
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Last Updated: 12/29/23