Meteoritical Bulletin, No. 105
Purchase: 2016 May, August, September
Mass: 318.6 g
meteorite (feldspathic breccia)
History: A stone
was purchased by Ben Hoefnagels in May 2016 from
a dealer in Ouarzazate, Morocco. Subsequently
additional material was found at the same find site by the same nomad, and
purchased by Ben Hoefnagels in August and
characteristics: Six larger stones (110.9, 82.1, 32.6,
30.8, 16.9, and 15.4 g) plus many smaller stones (total 29.9 g). All stones
have the same distinctive appearance, lacking fusion crust but mostly
coated by orange weathering products. The fresh interior exhibits whitish
clasts in a light-gray matrix with visible vesicles.
(A. Irving and S. Kuehner, UWS)
Breccia consisting of rounded to angular gabbroic anorthositic clasts,
related crystalline debris, rare mare basalt clasts and very fine grained
devitrified glassy clasts in a fine grained, partly vesicular matrix
composed of quenchiform crystals plus glass. Minerals
are anorthite, exsolved pigeonite, olivine (some forsteritic), augite,
subcalcic augite, magnesian orthopyroxene, unexsolved
pigeonite, ilmenite, Ti-chromite, troilite, minor primary Ba-Ca-K feldspar
and secondary barite.
Olivine (Fa6.0, FeO/MnO = 129; Fa53.7-60.6, FeO/MnO =
86-95; N = 4), pigeonite (Fs29.2Wo7.7, FeO/MnO = 47;
Fs45.3Wo5.6, FeO/MnO = 53; N = 2), augite (Fs18.1Wo39.3,
FeO/MnO = 41), orthopyroxene host (Fs59.4Wo2.1,
FeO/MnO = 62), clinopyroxene exsolution lamella (Fs25.3Wo41.0,
FeO/MnO = 45), plagioclase (An96.2-97.3Or0, N = 2).
Lunar (feldspathic regolith breccia).
Specimens: 20.66 g including one polished thin section at UWB;
remainder with Mr. B. Hoefnagels.