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Unequilibrated Eucrite 43.69g I NWA 11897

Brought to you by: Top Meteorite

  • $ 5,000.00


On Offer: 43.69 gram HED Unbrecciated Achondrite Eucrite
Type: Achondrite Eucrite.
Official name: NWA 11897
Description: This is a rare "unequilibrated" eucrite who's parent magma, unlike most other HEDs, was not significantly altered after crystallization / before ejection. This 43.69 gram specimen of NWA 11897 is the main mass and represents the majority of the meteorite revovered. There was only one other piece removed from the stone, see cut area shown in photos, and it was divided in two with the larger part being used for analysis and the smaller placed in our private collection. 
What you get: 43.69g NWA 11897 Eucrite Meteorite Specimen as Shown, Membrane Storage/Display Box, & signed Certificate of Authenticity.
I offer a 100% no questions asked 30 day return policy.
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Northwest Africa 11897
Basic information Name: Northwest Africa 11897
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11897 
Observed fall: No
Year found: 2018
Country: (Northwest Africa) 
Mass:help 43.9 g
Classification
  history:
Recommended:   Eucrite-unbr    [explanation]

This is 1 of 81 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 2 Sep 2018
Writeuphelp
Writeup from MB 107: 

Northwest Africa 11897 (NWA 11897)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased in March 2018 by Craig Zlimen and Dustin Dickens from a Moroccan meteorite dealer.

Physical characteristics: Fusion crusted exterior; sawcut reveals a fine-grained, gray interior.

Petrography: (C. Agee, UNM) This meteorite is a porphyritic basalt with pigeonite phenocrysts set in a groundmass of fine-grained quench crystals of pyroxene, plagioclase, silica, chromite, and Fe-sulfide. Pigeonite phenocrysts show igneous zoning.

Geochemistry: (C. Agee, UNM) pigeonite Fs45.5±8.4Wo5.2±2.0, Fe/Mn=36±2, n=16.

Classification: Unequilibrated, porphyritic eucrite; unbrecciated

Specimens: 8.9 g including a probe mount on deposit at UNM, Craig Zlimen and Dustin Dickens hold the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase: Morocco
Date: P 2018
Mass (g): 43.9
Pieces: 1
Class: Eucrite-unbr
Shock stage: moderate
Weathering grade: low
Ferrosilite (mol%): 45.5±8.4
Wollastonite (mol%): 5.2±2.0
Classifier: C. Agee, UNM
Type spec mass (g): 8.9
Type spec location: UNM
Main mass: Craig Zlimen and Dustin Dickens
Comments: Field name DD-24; submitted by C. Agee, UNM
 
ID: NWA118971801

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