Meteorite**NWA 16129, Metamorphic Angrite**1.087 grams, NEW ULTRA RARE ANGRITE for Sale

MeteoriteNWA 16129, Metamorphic Angrite1.087 grams, NEW ULTRA RARE ANGRITE For Sale

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MeteoriteNWA 16129, Metamorphic Angrite1.087 grams, NEW ULTRA RARE ANGRITE:
$550.00

Hello, up for sale is NWA 16129 classified as a rare Angrite with low Weathering and low shock stage!! This gorgeous part-slice weighs 1.087 grams with a perfect fine polish to one side. The meteorite shows a granular texture and is predominantly composed of up to 1 mm sized calcic olivine, Al-Ti-augite (pinkish in thin section), and almost pure anorthite often adjoining at 120 degree grain boundaries. Frequently, clinopyroxene poicilitically encloses anorthite. Olivine contains blebby and lamellae shaped kirschsteinite exsolutions. Minor phases include pleonaste, troilite, and kamacite. Contains small rounded vesicles. There is no other Angrite similar to this metamorphic-like, it\'s very unique and absolutely gorgeous looking. This meteorite comes with 2 COA cards, one from Mateusz Szyszko [who I purchased this from] and a COA card from me \"Streaming Meteorites\"; it aslo comes with a display case. Thanks for your interest and take care.

***Angrites represent fragments of first-generation planetesimals (ancestors of rocky planets) enriched in high-temperature nebular materials that formed within the innermost solar system (< 1 AU).***

Name: Northwest Africa 16129

Abbreviation: NWA 16129

Observed fall: No

Year found: 2023

Country: (Northwest Africa)

Mass: 573 g

Northwest Africa 16129 (NWA 16129)

(Northwest Africa)

Purchased: 2023

Classification: Angrite

History: The meteorite was purchased from a meteorite dealer in Algeria.

Physical characteristics: Two grayish fragments partly covered with fusion crust.

Petrography: The meteorite shows a granular texture and is predominantly composed of up to 1 mm sized calcic olivine, Al-Ti-augite (pinkish in thin section), and almost pure anorthite often adjoining at 120 degree grain boundaries. Frequently, clinopyroxene poicilitically encloses anorthite. Olivine contains blebby and lamellae shaped kirschsteinite exsolutions. Minor phases include pleonaste, troilite, and kamacite. Contains small rounded vesicles.

Geochemistry: olivine: Fa55.3±0.2Ln3.5±0.4 (Fa55.0-55.6Ln3.1-4.1, FeO/MnO=68-84, CaO: 2.2±0.2, n=7); kirschsteinite: Fa36.5±0.3Ln47.7±0.2 (Fa36.1-36.9Ln47.3-48.0, FeO/MnO=70-88, CaO: 29.6±0.1, n=7); Al-Ti-augite: Fs16.4±0.2Wo53.3±0.6 (Fs16.0-16.7Wo52.6-54.1, FeO/MnO=71-112, Al2O3: 8.4±0.6 wt.%, TiO2: 1.6±0.2 wt.%, n=7); anorthite: An99.8-100.0Ab0.0-0.4, n=7, pleonaste spinel: Fe/(Mg+Fe): 0.66±0.1, Al2O3: 61.6±0.1 wt%, n=5

Data from:

MB112

Table 0

Line 0:

Place of purchase:Algeria

Date:P 2023

Mass (g):573

Pieces:2

Class:Angrite

Shock stage:low

Weathering grade:low

Fayalite (mol%):55.3; 36.5

Ferrosilite (mol%):16.4

Wollastonite (mol%):53.3

Classifier:A. Greshake, MNB

Type spec mass (g):20.1

Type spec location:MNB

Main mass:Mateusz Szyszko

Comments:Submitted by Ansgar Greshake

***Angrites are olivine-bearing, basaltic meteorites that originate from a volatile-depleted planetesimal. Previous work on angrites suggests that their parent body accreted within the first 0.5 to 1 Myr of solar system evolution and differentiated via extensive melting and crystallization of igneous rocks within ~2 Myr after the first solids formed (~4.57 billion years ago). Petrologic studies indicate that angrites experienced little physical or chemical alteration after crystallizing. Consequently, angrites are the oldest known igneous rocks, preserving records of early solar system chronology and planetary formation, melting, and differentiation.***