Yamato 791821 Meteorite Quick Facts
- Name: Yamato 791821
- Year Discovered: 1979
- Approximate Recovery Location: Antarctica
- Precise Recovery Location: (-71.5, 35.66667)
- Mass: 662 grams
- Classification: H5
- Discovery Type: Found
- Condition: Valid
More Details About the Yamato 791821 Meteorite
The Yamato 791821 meteorite was discovered in 1979. It was recovered in Antarctica (-71.5, 35.66667). It has a mass of 662 grams.
Yamato 791821 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.
Yamato 791821’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 Yamato 791821 meteorite is a “Found” 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: 1/17/24