Meteorite**NWA 4025, CB Carbonaceous Chondrite**4.480 gram endcut, Ultra Rare!!!

Description

Hello up for sale is NWA 4025 classified as an ultra rare CB Carbonaceous. This gorgeous endcut weighs 4.480 gram with a perfect polish and etch to one side. The meteorite is characterized by a high modal metal abundance of about 60–80 vol%. The silicate portion contains abundant, large (up to several millimeters) and clearly defined chondrules of different textural types including cryptocrystalline, BO, PO, and POP chondrules. Carbonaceous chondrite (CB); S3, moderate weathering. The meteorite is a Bencubbin-like carbonaceous chondrite (CB) based on petrography and metal/silicate ratio
while O-isotopes suggest a close relation to CH chondrites.
This meteorite comes with 2 COA cards Streaming Meteorites and Mark Lyon and display case. Thanks for your interest and take care.
THIS IS THE ONLY PIECE I HAVE OF THIS SUPER RARE METEORITE, DON'T LET THIS ONE GET BY!!! GOOD LUCK!!!
Name: Northwest Africa 4025
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4025
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 746 g
Northwest Africa 4025
Morocco
Find: August 2005
Carbonaceous chondrite (CB)
History: A total of 69 fragments were purchased in August 2005 from a dealer in Erfoud, Morocco.
Physical characteristics: The small, mostly angular fragments, totaling 745.5 g, display a rusty brown surface; fusion crust is almost absent.
Petrography: (A. Greshake, MNB) The meteorite is characterized by a high modal metal abundance of about 60–80 vol%. The silicate portion contains abundant, large (up to several millimeters) and clearly defined chondrules of different textural types including cryptocrystalline, BO, PO, and POP chondrules.
Mineral compositions and geochemistry: Olivine (Fa1.7–4.4), low-Ca pyroxene (Fs1.5–3.9), determined by EMP. Oxygen isotopes: (I. A. Franchi and R. C. Greenwood, OU) δ17O = 0.22, δ18O = 3.73, Δ17O = −1.72 (mean of 2, all ‰). Nitrogen isotopes: (I. A. Franchi and A. Verchovsky, OU) 89.8 ppm N with a bulk δ15N = 601 ‰ and a peak at 1000 °C of 1169‰.
Classification: Carbonaceous chondrite (CB); S3, moderate weathering. The meteorite is a Bencubbin-like carbonaceous chondrite (CB) based on petrography and metal/silicate ratio while O-isotopes suggest a close relation to CH chondrites.
Type specimen: A total of 20 g plus one polished thin section are at MNB. HSSH holds the main mass.
Data from:
MB91
Table 2
Line 167:
Place of purchase: Erfoud, Morocco
Date: 2005 Aug
Mass (g): 745.5
Pieces: 1
Class: CB-like
Shock stage: S3
Weathering grade: moderate
Fayalite (mol%): 1.7-4.4
Ferrosilite (mol%): 1.5-3.9
Classifier: A. Greshake, MNB
Type spec mass (g): 20
Type spec location: MNB
Main mass: HSSH