Meteorite: huge 560 gram Aba Panu slice. L3 witnessed fall.

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 huge 560 gram Aba Panu slice. L3 witnessed fall.
I will be on vacation next week so anything that isn't paid for by Sunday night (US time) might not get shipped until after the following week's auction.
Here is what the metbull says about it
Aba Panu
Basic information
Name:
Aba Panu
This is an OFFICIAL meteorite name.
Abbreviation:
There is no official abbreviation for this meteorite.
Observed fall:
Yes, confirmed fall
Year fell:
2018
Country:
Nigeria
Mass:
160 kg
Classification
history:
Meteoritical Bulletin:
MB 107
(2018)
L3
Recommended:
L3
[explanation]
This is 1 of 722 approved meteorites (plus 1 unapproved name) classified as L3.
[show all]
Search for other:
L chondrites
,
L chondrites (type 3)
,
Ordinary chondrites
, and
Ordinary chondrites (type 3)
Comments:
Approved 2 Sep 2018
Writeup
Writeup from
MB 107:
Aba Panu
8°16’55.83"N, 3°34’1.72"E
Oyo, Nigeria
Confirmed fall: 19 April 2018
Classification: Ordinary chondrite (L3)
History
: On the afternoon of 19 April 2018, a large fireball detonated over the Nigerian state of Oyo. This fireball was recorded by NASAs Center for Near Earth Object Studies (
CNEOS
) as event 2018-04-19 14:02:27. The meteoroid entered at 20.9 km/s and detonated at an altitude of 30 km at 7.5’N, 3.6’E releasing a calculated total impact energy of 0.23 kt. Many stones fell between the villages of Ipapo (8°7’50.84"N, 3°30’34.58"E) and Tede to the north (8°33’21.49"N, 3°26’46.31"E). Stone were collected at
multiple locations
. The meteorite is named for the village of Aba Panu near the center of the strewn-field: multiple kg-sized stones were found in and around this village. Current total known weight is near 160 kg.
Physical characteristics
: The stones are hard, range from 30 g to near 40 kg, rounded with broad poorly developed regmaglypts, and largely lacking fusion crust. Fusion crust is occasionally preserved within the shallow regmaglypts. Most stones are greyish green and show areas of rounded to angular light-colored clasts. Largest clast (5 × 2 cm) is angular, fine-grained, and achondritic. Observations from multiple slices show that clasts constitute roughly <10 areal%.
Petrography
: Visually the cut surfaces are dominated by a gray matrix, studded with well-developed chondrules and chondrule fragments. Some chondrules to 4 mm but the majority are 0.1 to 1 mm across. Observations on an 8 × 7 cm slab shows the following clasts: L6 (3 × 1 cm); L5 (1.5 × 1 cm); and sub-rounded 1-cm dark clast with sparse 200 micron chondrules. Shock veins are rare. Metal and sulfide occurs as: fined grained spheres in the matrix; armoring chondrules; and, occasional lumps to 5 mm. Petrographic observations show a range of chondrule types dominated by PO, POP, RP, PP, and BO. Particularly evident in thin section are BO and PO chondrules with reddish purple (in plain polarized light) glass that is isotropic under crossed polars. The silicates are extensively shocked with olivine showing mosaicism and PDFs. SEM observations show that much of the metal/sulfide in the matrix occurs as fine-droplets, veins, and melt pods. Large Fe-Ni grains are polycrystalline with each crystal showing a kamacite core, dark-etched martensitic inner rim, and outer Ni-rich rim. Troilite is dominantly single crystal, and occasionally polycrystalline. Sparse chromite grains.
Geochemistry
: (L. Garvie,
ASU
) Olivine Fa
24.3±5.7
, n=18, range Fa
7.5-32.8.
Mean Cr
2
O
3
= 0.08, sigma-Cr
2
O
3
= 0.07, range 0.02 to 0.3. FeO/MnO=55.8±12.6. Low Ca, pyroxene Fs
17.0±11.6
Wo
2.0±1.9
range Fs
2.4-49.2
Wo
0.3-6.0
, n=17. High Ca pyroxene Fs
8.7
Wo
49.2
, n=1. Reddish purple, isotropic glass within BO and PO chondrules Or
1.4±0.8
Ab
87.6±4.8
, n=6, TiO
2
to 1 wt%. Oxygen isotopes (K. Ziegler,
UNM
): analyses of three subsamples by laser fluorination gave, respectively, δ
17
O = 3.724, 3.625, 3.684; δ
18
O = 5.160, 4.980, 5.089; Δ
17
O = 1.000, 0.996, 0.997 per mil.
Classification
: Geochemistry and oxygen isotopic data consistent with L chondrite. Estimated petrologic type 3.6 based on Fa and Fs spread, and Cr
2
O
3
content in olivine. L3, S4, W0.
Specimens
: Michael Farmer and Moritz Karl - 50 kg, Eric
Twelker
7.74 kg, and
ASU
242 g. Based on photographic evidence, it is estimated that the Nigerian government collected on the order of 100 kg of stones, though this mass is uncertain. Given the size of the fall and area of the fall, the total mass is conservatively given as 160 kg.
Data from:
MB107
Table 0
Line 0:
State/Prov/County:
Oyo
Date:
19 April 2018
Latitude:
8°16'55.83"N
Longitude:
3°34'1.72"E
Mass (g):
160000
Pieces:
Many
Class:
L3
Shock stage:
S4
Weathering grade:
W0
Fayalite (mol%):
24.3±5.7
Ferrosilite (mol%):
17.0±11.6
Wollastonite (mol%):
2.0±1.9
Classifier:
L. Garvie
Type spec mass (g):
242
Type spec location:
ASU
Main mass:
Michael Farmer and Moritz Karl
Finder:
anonymous
Comments:
Submitted by L. Garvie