-40%
Meteorite**NWA 14916, LL3**29.798 gram slice, Highest Quality Type 3!!!
$ 211.19
- Description
- Size Guide
Description
Hello up for auction is the gorgeous NWA 14916 classified as LL3. This gorgeous slice weighs 29.798 grams, it has a perfect mirror polish to one side and natural look to other with colorful Closely-packed, well-formed, unequilibrated glass-bearing chondrules (apparent diameter 770 ± 320 µm, N = 26) are set in a sparse fine-grained matrix containing stained kamacite, taenite and troilite. This is my only slice available, the rest of the mass is owned by my friend Simon deBoer. This slice comes with a COA card. Thanks for your interest and take care.THIS IS A PIECE ARTWORK, ONE OF A KIND TYPE 3
Northwest Africa 14916
Basic informationName: Northwest Africa 14916
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14916
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 520 g
Classification
history:
Recommended: LL3
This is 1 of 418 approved meteorites classified as LL3.
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments:Approved 9 May 2022
Writeuphelp
Writeup from MB 111:
Northwest Africa 14916 (NWA 14916)
(Northwest Africa)
Purchased: 2021 May
Classification: Ordinary chondrite (LL3)
History: Purchased by Matthew Stream in May 2021 from an Algerian dealer.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Closely-packed, well-formed, unequilibrated glass-bearing chondrules (apparent diameter 770 ± 320 µm, N = 26) are set in a sparse fine-grained matrix containing stained kamacite, taenite and troilite.
Geochemistry: Olivine (Fa19.7±17.3, range Fa0.4-47.5, N = 6; Cr2O3 in ferroan olivine 0.07-0.19 wt.%, mean 0.11 wt.%, sd 0.04 wt.%, N = 7), low-Ca pyroxene (Fs10.7±5.2Wo2.0±1.9, range Fs4.0-16.1Wo0.2-4.8, N = 5), pigeonite (Fs12.9Wo14.9), augite (Fs4.1Wo35.8; Fs0.6Wo48.0; N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.24.
Classification: Ordinary chondrite (LL3).
Specimens: 22.52 g including one polished thin section at UWB; remainder with Mr. M. Stream.
Data from:
MB111
Table 0
Line 0:
Place of purchase:Algeria
Date:P 2021 May
Mass (g):520
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):19.7±17.3
Ferrosilite (mol%):10.7±5.2
Wollastonite (mol%):2.0±1.9
Magnetic suscept.:4.24
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.52
Type spec location:UWB
Main mass:M. Stream
Comments:Work name MS21-5; submitted by A. Irving
Met Bull says:
type 3: Designates chondrites that are characterized by abundant chondrules, low degrees of aqueous alteration, and unequilibrated mineral assemblages. Many of the low-Ca pyroxene grains are monoclinic and exhibit polysynthetic twinning. The type 3 chondrites may be divided into subtypes ranging from 3.00 (least metamorphosed) to 3.9 (nearly metamorphosed to type 4 levels). If primary igneous glass occurs in the chondrules, it belongs to type 3.
Britannica says:
Chondrite, in general, any stony meteorite characterized by the presence of chondrules. The only meteorites classified as chondrites that do not contain chondrules are the CI group. These meteorites are so heavily altered by water that it is unclear whether they once contained chondrules. All other aspects of these objects, however, indicate that they belong with the chondrites. Chondrules are roughly spherical inclusions, typically hundreds of micrometres to a few millimetres in size. They are made up of silicates, metal, and sulfide, and they appear to have formed as molten droplets at high temperatures in the early solar nebula. The chondrules are set in a fine-grained matrix that binds them together. Chondrites are divided into three main classes based on their bulk chemical compositions, oxygen isotopic compositions, and petrology. These are carbonaceous chondrites, ordinary chondrites, and enstatite chondrites.