Allan Hills A78169 Meteorite Quick Facts
- Name: Allan Hills A78169
- Year Discovered: 1978
- Approximate Recovery Location: Antarctica
- Precise Recovery Location: (-76.71667, 159.66667)
- Mass: 22.2 grams
- Classification: H6
- Discovery Type: find
- Condition: Valid
More Details About the Allan Hills A78169 Meteorite
The Allan Hills A78169 meteorite was discovered in 1978. It was recovered in Antarctica (-76.71667, 159.66667). It has a mass of 22.2 grams.
Allan Hills A78169 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 A78169’s official classification is H6. The “H6” classification refers to a high-iron, ordinary chondrite meteorite with distinct features like smaller chondrules and specific oxygen isotope ratios close to those found on Earth. This type 6 meteorite has undergone extensive metamorphism, leading to uniform mineral composition, larger secondary mineral sizes, and the fading of many chondrule outlines, yet without any melting.
The Allan Hills A78169 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