Meteorite: 131.23 gram NWA 13758 R3 chondrite (rare class)

Description

HI all!
My name is Mark Lyon, and I’m a member of the International Meteorite Collectors Association, member number 6752. My business model is to buy in bulk and turn over inventory quickly (often through no-reserve auctions) giving you the best possible prices.
When you finish looking at this, please look at my other no reserve sales and auctions, and feel free to contact me if you don't see exactly what you are looking for.
Up for sale here is a
131.23 gram NWA 13758 R3 chondrite (rare class)
Here is that the metbul
l says about it.
Northwest Africa 13758
Basic information
Name:
Northwest Africa 13758
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 13758
Observed fall:
No
Year found:
2017
Country:
Algeria
Mass:
100 kg
Classification
history:
Recommended:
R3
[explanation]
This is 1 of 43 approved meteorites classified as R3.
[show all]
Search for other:
Rumuruti chondrites
,
Rumuruti chondrites (type 3)
Comments:
Approved 8 Apr 2021
Writeup
Writeup from MB 110:
Northwest Africa 13758
(NWA 13758)
Adrar, Algeria
Purchased: 2017
Classification: Rumuruti chondrite (R3)
History
: A large group of identically appearing stones, found together, was purchased by a Saharan dealer from a nomad in Algeria and was subsequently acquired by
Mark
Lyon
and Dustin Dickens. The original find was reportedly in the Tanezrouft Plateau, with the nearest town being Reggane, Algeria.
Physical characteristics
: Approximately 500 pieces ranging in mass from <1 kg to >5 kg, with a total known weight of approximately 100 kg. Dark brown sandblasted exterior. Saw cut reveals a breccia with fragments up to ~2 cm set in a fine-grained matrix. Abundant distinct chondrules are visible throughout. Two main lithologic domains exist within this meteorite, one has a gray, unstained matrix, and the second has a brownish-orange-stained matrix.
Petrography
: (C. Agee,
UNM
) Chondrite with mean apparent chondrule size 350±240 µm (n=21) set in abundant matrix (~35 vol%). Electron microprobe analyses were performed separately on the two main lithologic domains. Domain "A" has compositionally unequilibrated olivine and pyroxene both in chondrules as well as single mineral fragments in the matrix. Very small grains of albitic plagioclase are present. Chromite, pentlandite, and troilite are ubiquitous. No metal or oxidized iron was detected. Domain "B" has compositionally unequilibrated olivine and pyroxene both in chondrules as well as single mineral fragments in the matrix. Domain "B" appears to have slightly more chondrules than domain "A". Very small grains of albitic plagioclase were present. Ti-rich chromite, pentlandite, and Ni-bearing troilite are ubiquitous. No metal or oxidized iron was detected.
Geochemistry
: (C. Agee,
UNM
) Domain "A": olivine Fa
36.6±8.4
, CV=23%, Fe/Mn=83±15, n=12; low-Ca pyroxene Fs
21.4±6.8
Wo
0.9±0.5
, Fe/Mn=39±19, n=4; augite Fs
8.8±0.7
Wo
46.0±0.2
, Fe/Mn=43±4, n=2; plagioclase An
8.8±0.6
Ab
86.5±0.2
Or
4.7±0.7
, n=3. Domain "B": olivine Fa
38.7±5.8
, CV=15%, Fe/Mn=87±10, n=12; low-Ca pyroxene Fs
10.0±7.7
Wo
2.0±1.8
, Fe/Mn=15±7, n=4; augite Fs
11.4±0.9
Wo
44.8±1.3
, Fe/Mn=51±11, n=2; plagioclase An
9.2±0.9
Ab
85.9±1.6
Or
4.9±0.8
, n=3.
Classification
: Rumuruti chondrite (R3). Domain "A" is approximately R3.7 and domain "B" is approximately R3.9, based on olivine coefficient of variation (CV) after
Bischoff (2000)
.
Specimens
: 1127.72 g complete stone, and a 57.69 g full slice from a different complete stone, are on deposit at
UNM
.
Mark
Lyon
holds the main mass including a total of 14 pieces weighing 19.84 kg, Dustin Dickens holds ~60 kg of medium to small stones.
Bibliography:
Bischoff, A. (2000) Mineralogical characterization of primitive, type-3 lithologies in Rumuruti chondrites.
Meteorit. Planet. Sci.
35
699-706 (
link
)
Data from:
MB110
Table 0
Line 0:
State/Prov/County:
Adrar
Origin or pseudonym:
Tanezrouft
Place of purchase:
Algeria
Date:
P 2017
Mass (g):
100000
Pieces:
500
Class:
R3
Shock stage:
S2
Weathering grade:
W1
Fayalite (mol%):
36.6±8.4, 38.7±5.8
Ferrosilite (mol%):
21.4±6.8, 10.0±7.7
Wollastonite (mol%):
0.9±0.5, 2.0±1.8
Classifier:
C. Agee, UNM
Type spec mass (g):
1185.41
Type spec location:
UNM
Main mass:
Mark Lyon
Comments:
Submitted by C. Agee