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Meteorite that fell in the mountains near Fukang, China is estimated to be 4.5 billion years old (Original Post) red dog 1 Sep 2025 OP
Just wow! Wonder if we'll ever know its composition since they know its age Deuxcents Sep 2025 #1
"The Fukang pallasite contains large, gem quality olivine, or peridot, in a nickel-iron matrix" sl8 Sep 2025 #3
Thanks..some amazing stuff 🤔 Deuxcents Sep 2025 #5
I'm no expert, but it looks closer to 3.9 billion years to me. Sneederbunk Sep 2025 #2
What a cool looking thing. 3catwoman3 Sep 2025 #4

sl8

(17,147 posts)
3. "The Fukang pallasite contains large, gem quality olivine, or peridot, in a nickel-iron matrix"
Tue Sep 2, 2025, 05:59 PM
Sep 2025
https://en.m.wikipedia.org/wiki/Fukang_meteorite

Classification and composition

The Fukang pallasite contains large, gem quality olivine, or peridot, in a nickel-iron matrix. The olivines vary in shape from rounded to angular, many are fractured and they range in size from less than five millimetres to several centimetres. The main mass contains several regions of massive olivine clusters up to eleven centimetres (4.3 inches) in diameter with thin metal veins. Fo86.4 with molar Fe/Mg = 0.1367, Fe/Mn = 40.37, and Ni = 0.03 wt%. The metal matrix is mostly kamacite with an average nickel content of 6.98 wt%. Vermicular sulfide (troilite) is present in some olivine.
Oxygen isotopes: δ18O 2.569 ‰, δ17O 1.179 ‰, ∆1 7O = −0.157 ‰.[2]

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