MAC 88105,125 (USNM 6537)

Metadata Usage (text):

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Expedition:

Antarctic Search for Meteorites (ANSMET)

Notes:

# NASA data for MAC 88105 Weathering: A/Be Fracturing: A/B Pairing: MAC 88104 Fa: 10-34 mol % Fs: 25 mol % ²⁶Al: 20 ± 3 dpm/kg NTL: 2.9 ± 0.3 krad

MAC88104 and MAC88105 are paired fragments of a polymict breccia. Both specimens have thin gray-green fusion crust which covers approximately 30% of the exterior surface. The other exterior surfaces are dark gray and weathered, with numerous clasts and vugs where clasts have been plucked out by weathering. A minute amount of evaporate minerals is evident in the minor cracks in the fusion crust.
The interior is blue gray and mostly fine-grained, but glassy in some areas. Veins of dark vesicular glass surround some clasts, but do not transect any clasts. The meteorite contains abundant angular feldspathic clasts and fine-grained gray, black and beige clasts. The largest clast exposed (1.5 x 1 cm) is fine-grained amd anorthositic, with scattered mafic minerals. Other clasts are medium-grained and more mafic.

Record Last Modified:

31 Jan 2024

Specimen Count:

1

USNM Number:

USNM 6537

Weight:

80.71 g

Place:

Antarctica

See more items in:

Mineral Sciences

Meteorites

Inventory Collection

NMNH - Mineral Sciences Dept.

Record ID:

nmnhmineralsciences_1023720

GUID (Link to Original Record):

http://n2t.net/ark:/65665/3e2cbb578-41d6-4863-bb85-515d70a768bc

Open Access Online Media:

Creative Commons Zero

These media are in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's Terms of Use.