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Northwest Africa 7495 65.8g

$197.00

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  • Meteorite Type: Ordinary chondrite L5
  • Weight: 65.8 grams
  • Approximate Measurements:  76 mm x 68 mm x 4 mm

Out of stock

SKU: BB-65-8 Category:

Description

Northwest Africa 7495

Morocco

Classification: Ordinary chondrite (L5)

Physical characteristics: Two stones, 1454.49 g and 690.18 g, of identical appearance, purchased as a pair, with dark exterior, saw cuts reveal scattered chondrules, some up to 3 mm, and finely disseminated metal/sulfide, some vein-like, set in a dark gray matrix, also some small cavities lined with euhedral crystals.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a numerous PO and POP chondrules in a fine-grained matrix, some chondrules with recrystallized mesostasis and some with plagioclase. Ubiquitous troilite and kamacite, minimal oxidation.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa24.2±0.4, Fe/Mn=50±3, n=21; low-Ca pyroxene Fs20.0±0.3Wo2.0±0.7 Fe/Mn=28±1, n=20.

Classification: Ordinary chondrite (L5), weathering grade W1.

Additional information

Weight 65.8 g

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