- Meteorite Type: Howardite
- Meteorite Weight: 45.6 grams
- Approximate Measurements: 69 mm x 50 mm x 9 mm
- Additional Information: End cut in glass front display box, includes original RA Langheinrich Meteorite Collection and Aerolite Meteorites identification cards. Beautifully exhibits a fine-grained mosaic of recrystallized pyroxenes and plagioclase formed by high temperatures and pressures, with localized melt pockets and veins in clasts.
1 in stock
1 in stock
Howardite, found in Northwest Africa, 2003
WRITEUP FROM THE METEORITICAL BULLETIN:
Northwest Africa 1929 (NWA 1929)
Year found: 2003
Petrography: (T. Bunch and J. Wittke, NAU ) A breccia of 72 vol% cumulate eucrite clasts, 8% subophitic clasts, 14% diogenites, and 6% melt clasts. Pervasive solid-state recrystallization of plagioclase and pyroxenes with localized melt pockets and veins in clasts.
Geochemistry: Coarse-grained gabbroic eucrite: Pyroxene (Fs45–40Wo7–20); plagioclase (An91.2–95.3); metal (Ni = 0.97; Cr = 0.87 [both wt%]). Diogenite: Pyroxene (Fs43–54Wo2.5–3.6; Fe/Mn = 36, 37).
Classification: Achondrite (howardite); high shock.