» » » NWA 16987 (17.89 gram)

NWA 16987 (17.89 gram)

252 $

In stock

Category:
[ Meteoritical Bulletin Database ]

 

Classification: Chondrite H7   W1/S1
Time/Place: 2024 in Libya
Mass: 2000g

History: The meteorite was purchased from a dealer in Libya.
Physical characteristics: Brownish rock partly covered with fusion crust.
Petrography: The meteorite shows a strongly recrystallized texture with abundant triple junctions between adjoining mineral grains. Felspar and low-Ca pyroxene often poikilitically enclose olivine crystals. Albitic feldspar grains are typically 100 µm in size and frequently contain thin exsolution lamellae of potassium-rich alkali feldspar. No chondrule structures observed. Accessory phases include kamacite, taenite, troilite, and merrillite.
Geochemistry: olivine: Fa17.2±0.1 (Fa17.0-17.3, FeO/MnO=36±1, n=7); low-Ca pyroxene: Fs15.2±0.1Wo3.3±0.3 (Fs15.1-15.4Wo3.0-4.0, FeO/MnO=21±1, n=7); plagioclase: An9.7-14.0Ab80.4-84.0Or5.5-8.2, n=7; K-feldspar exsolutions: An8.9-9.0Ab18.8-24.0Or67.2-72.3, n=3

Fresh, beautiful and perfectly prepared H7. Only 32nd of its kind and 5th largest.