#21 MOON - METEORITE - 7.97 grams - Lunar Feldspathic Breccia - NWA 11828

Description

#21 MOON - METEORITE - 7.97 grams - Lunar Feldspathic Breccia - NWA 11828
Signed "Certificate of Authenticity" included.
A irregular block with several interesting faces:
Possible relict crust with broken faces showing a variety of clasts.
Uniform, textured and veined clasts of white, tan, and light gray up to 7mm long, some possibly troctolitic, are readily apparent.
Under a binocular microscope there are a variety of structures, and spots of black glass are apparent.
Rust, as well as shiny blebs of Fe metal might be found.
NWA 5000, at a much higher price, is not unique in containing metal...
priority flat rate shipping in the USA.
Seller:  NICK GESSLER, Ph.D.
Member:  METEORITICAL SOCIETY
Member:  INTERNATIONAL METEORITE COLLECTORS ASSOC (#4090).
Host:  METEORITES CHINA (Conference and Exhibition), Kunshan, China, 2017.
METEORITICAL BULLETIN entries:  13 finds in California and Nevada, 90 other entries.
Curator:  Meteorites, impactites, cryptographic & computational artifacts at GESSLERcollection.com.
Courses:  Meteorites & Solar System History - Espionage, Cryptology and Psychological Operations - Complex Systems, Artificial Life, Culture and Evolutionary Computation.
Meteoritical Bulletin: Entry for Northwest Africa 11828
Northwest Africa 11828
Basic information
Name:
Northwest Africa 11828
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 11828
Observed fall:
No
Year found:
2017
Country:
(Northwest Africa)
Mass
5.34 kg
Classification
history:
Meteoritical Bulletin:
(2018)
Lunar (feldsp. breccia)
Recommended:
Lunar (feldsp. breccia)
This is 1 of 199 approved meteorites classified as Lunar (feldsp. breccia).
Comments:
Approved 22 Jun 2018
Writeup MB 107
Northwest Africa 11828
(NWA 11828)
(Northwest Africa)
Find: 2017
Classification: Lunar meteorite (feldspathic breccia)
History
: Stones were acquired from a Moroccan dealer in 2017.
Physical characteristics
: A group of dark- and light-gray stones with no fusion crust.
Petrography
: (S. Demidova and D. Badyukov,
Vernad
): The meteorites are polymict breccias containing numerous mineral fragments and large rounded lithic clasts occuring within a brownish cryptocrystalline to glassy impact-melt matrix; the lithic clast population comprises impact-melt breccias, as well as cataclastic granulitic rocks of anorthositic, noritic, gabbro-noritic and troctolitic compositions; clasts of impact-melt breccias typically show breccia-in-breccia textures; glass fragments and rare spherules are present.
Geochemistry
: feldspar, An
92-98
; orthopyroxene, Wo
2-5
En
60-81
; clinopyroxene; Wo
5-43
En
33-69
, olivine, Fo
22-93
(FeO/MnO = 85); accessory minerals include: ilmenite (2.6-6.2 wt % MgO), Cr-rich ulvöspinel, Ti,Al-rich chromite, silica, Ca-phosphate, armalcolite, baddeleyite, troilite, and abundant FeNi metal; the stones are moderately weathered; carbonate veins and Fe hydroxides are present.
Classification
: Lunar, feldspathic regolith breccia
Specimens
: 23 type specimens of 662.5 g, and a thin section,
Vernad
, the main mass with an anonymous keeper
Data from:
MB 107
Table 0
Line 0:
Place of purchase:
Morroco
Date:
2017
Mass (g):
5340
Pieces:
several
Class:
Lunar (feldsp. breccia)
Classifier:
F. Badyukov, Vernad
Type spec mass (g):
663
Type spec location:
Vernad
Main mass:
anonymous
Comments:
Submitted by Dmitry Badyukov
Institutions
and collections
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)