Allan Hills A81265 Meteorite Quick Facts
- Name: Allan Hills A81265
- Year Discovered: 1981
- Approximate Recovery Location: Antarctica
- Precise Recovery Location: (-76.70083, 159.40306)
- Mass: 7.5 grams
- Classification: H5
- Discovery Type: find
- Condition: Valid
More Details About the Allan Hills A81265 Meteorite
The Allan Hills A81265 meteorite was discovered in 1981. It was recovered in Antarctica (-76.70083, 159.40306). It has a mass of 7.5 grams.
Allan Hills A81265 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 A81265’s official classification is H5. The “H5” classification indicates a high-iron ordinary chondrite from the H group, characterized by its relatively small chondrules and siderophile elements, with oxygen isotope ratios nearing Earth’s values. This type 5 meteorite has undergone significant metamorphism, leading to a uniform composition of minerals like olivine and pyroxene, growth of secondary minerals, and less distinct chondrule features.
The Allan Hills A81265 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