217.5g Eucrite-unb. HED

Top Meteorite

$ 4,200.00

On Offer: 217.5 gram Eucrite Unb. end cut of NWA 10962

Measurements: 73.81 mm x 51.71 mm x 35.52 mm

Type: Eucrite-unb

Origin: Vesta or Vestan-like celestial body

Official name: NWA10962

Description: 217.5 gram full unpolished slice of the stunning unbrecciated eucrite NWA 10962. Full unpolished / untreated end piece measures 44.78mm x 35.80mm x 1.75mm and offers a window into how glassy fusion crust can either be completely ablated by wind born sand particles, or preserved in nearly perfect condition on the same stone depending on its orientation and exposure to the wind and sand. This specimen has both perfect glassy rivulets of fusion crust on one side and sandblasted naturally polished surface on the other.

What you get: 217.5 NWA 10962 Eucrite Meteorite Specimen as Shown, & signed Certificate of Authenticity.

I offer a 100% no questions asked 30 day return policy.

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Northwest Africa 10962

Basic information

Name: Northwest Africa 10962
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10962
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 860 g

Classification
history:

Meteoritical Bulletin:		(2016)	Eucrite-unbr
Recommended:			Eucrite-unbr [explanation]

This is 1 of 111 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, , and HED achondrites

Comments:

Approved 17 Dec 2016

Writeup

Writeup from MB 105:

Northwest Africa 10962 (NWA 10962)

(Northwest Africa)

Find: 2015

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Fayssal Mezgouri in 2015 from a nomad in northwest Africa and sold to Dustin Dickens in 2016.

Physical characteristics: Two stones of approximately equal mass with glassy, partially oxidized fusion crust on one side of each and sand-ablated patina on the remaining surfaces.

Petrography: (Z. Guo, UWO) Medium grained igneous rock. Modal abundances and corresponding grain sizes: plagioclase 60% (400-500 μm), pyroxene 40% (300-1000 μm) and metal ~1% (100-200 μm). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.81. Undulatory extinction is present in some plagioclase. Metal has a narrow oxide rim.

Geochemistry: Mineral composition and geochemistry: Pyroxenes: low-Ca Fs_58.6±1.4Wo_3.6±1.8(N=6), High-Ca: Fs_29.3±2.1Wo_39.9±2.4(N=9), Fe/Mn ratio of 27.3±0.8 (N=15). Plagioclase: An_89.7±0.3(N=10).

Classification: Eucrite, unbrecciated.

Specimens: 21.9 g at UWO including a thin section.

Data from:
  MB105
  Table 0
  Line 0:

Date:	2015
Mass (g):	860
Pieces:	2
Class:	Eucrite-unbr
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	58.6±1.4 (N=6) 29.3±2.1 (N=9)
Wollastonite (mol%):	3.6±1.8 (N=6); 39.9±2.4 (N=9)
Magnetic suscept.:	3.81
Classifier:	Z. Guo, UWO
Type spec mass (g):	21.9
Type spec location:	UWO
Main mass:	Dustin Dickens
Comments:	W0001; submitted by Audrey Bouvier

Institutions
and collections

UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)

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