-40%
Meteorite - rare Ureilite-Polymict - NWA 15112 - w/ C1/2 clasts - polished 4.38g
Meteorite - rare Ureilite-Polymict - NWA 15112 - w/ C1/2 clasts - polished 4.38g

Meteorite - rare Ureilite-Polymict - NWA 15112 - w/ C1/2 clasts - polished 4.38g

$ 0.52

Availability: 66 in stock
  • Condition: New

    Description

    On offer is a rare sample classified as a
    Ureilite-Polymict
    bearing
    carbonaceous clasts of type C1/2
    due t
    o the parent body collisding with another body of type C1/2.
    The slice offered herein is prepared to the highest quality cut very thin and exhibits nice golden inclusions. The meteorite is officially classified as
    NWA 15112.
    Weight: 4.38g grams
    This
    specimen comes with a signed
    COA
    and a
    protection box
    We offer combined shipping
    We are a
    Global Meteorites Association
    trusted
    member
    #
    G0064
    Official entry in the Meteorites database bulletin:
    Northwest Africa 15112
    Basic information
    Name:
    Northwest Africa 15112
    This is an OFFICIAL meteorite name.
    Abbreviation:
    NWA 15112
    Observed fall:
    No
    Year found:
    2022
    Country:
    (Northwest Africa)
    Mass:
    210 g
    Classification
    history:
    Recommended:
    Ureilite-pmict
    [explanation]
    This is 1 of 31 approved meteorites classified as Ureilite-pmict.
    [show all]
    Search for other:
    Achondrites
    ,
    Ureilites
    Comments:
    Approved 1 Oct 2022
    Writeup
    Writeup from MB 111:
    Northwest Africa 15112
    (NWA 15112)
    (Northwest Africa)
    Purchased: 2022
    Classification: Ureilite (polymict)
    History
    : The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in May, 2022.
    Physical characteristics
    : Thirty-four brownish fragments without fusion crust.
    Petrography
    : The meteorite is a polymict breccia composed of up to 4 mm sized impact melt and carbonaceous C1/2 clasts plus up to 1.5 mm sized mineral fragments set in a fine-grained clastic matrix. Dominant minerals are olivine with reduced rims, compositionally homogeneous olivine, pigeonite, low-Ca pyroxene, Ca-pyroxene, and feldspar. Minor phases are FeS and rare metal. The meteorite contains flaky graphite.
    Geochemistry
    : olivine cores: Fa
    23.6±0.2
    (Fa
    23.3-23.9
    , n=7), contains 0.59±0.03 wt% Cr
    2
    O
    3
    and 0.32±0.02 wt% CaO; reduced rims in olivine: Fa
    9.0-10.8
    ; homogeneous olivine: Fa
    20.5±0.3
    , n=7; pigeonite: Fs
    17.7±0.1
    Wo
    9.0±0.1
    (Fs
    17.6-17.9
    Wo
    8.9-9.1
    , n=7), contains 1.03±0.04 wt% Cr
    2
    O
    3
    and 0.64±0.03 wt% Al
    2
    O
    3
    ; low-Ca pyroxene: Fs
    12.2±0.1
    Wo
    4.2±0.1
    (Fs
    12.1-12.4
    Wo
    4.2-4.3
    , n=7); Ca-pyroxene: Fs
    27.0±0.2
    Wo
    35.6±0.1
    (Fs
    26.7-27.4
    Wo
    35.6-35.7
    , n=7); feldspar: An
    6.4-6.8
    Ab
    90.8-91.3
    Or
    2.3-2.5
    , n=7