Sample 67947

67947

Granulitic Breccia 2.43 grams

Figure 1: Photo of 67947. S72-38977.

Introduction

Sample 67947 is a “walnut” from soil 67941. Stoffler et al. (1985) classified 67947 as a granulitic breccia, after looking at a thin section and measuring its REE content (figure 2). There is only one thin section.

References for 67947

Butler P. (1972a) Lunar Sample Information Catalog Apollo 16. Lunar Receiving Laboratory. MSC 03210 Curator’s Catalog. pp. 370.

LSPET (1973b) The Apollo 16 lunar samples: Petrographic and chemical description. Science 179, 23-34.

LSPET (1972c) Preliminary examination of lunar samples. In Apollo 16 Preliminary Science Report. NASA SP-315, 7-1—7-58.

Ryder G. and Norman M.D. (1980) Catalog of Apollo 16 rocks (3 vol.). Curator’s Office pub. #52, JSC #16904

Stöffler D., Bischoff A., Borchardt R., Burghele A., Deutsch A., Jessberger E.K., Ostertag R., Palme H., Spettel B., Reimold W.U., Wacker K. and Wanke H. (1985) Composition and evolution of the lunar crust in the Descartes highlands. Proc. 15th Lunar Planet. Sci. Conf. in J. Geophys. Res. 90, C449-C506.

Sutton R.L. (1981) Documentation of Apollo 16 samples. In Geology of the Apollo 16 area, central lunar highlands. (Ulrich et al. ) U.S.G.S. Prof. Paper 1048.

Mineralogical Mode 67947

Stoffler et al. 1985
Plagioclase	87%
Pyroxene	11
Olivine	1.3
Opaques	0.7

Table 1. Chemical composition 67947

	reference Stoffler85
weight SiO2 %	42.93	(a)
TiO2	0.41	(a)
Al2O3	31.97	(a)
FeO	2.54	(a)
MnO
MgO	1.8	(a)
CaO	17.58	(a)
Na2O	0.57	(a)
K2O	0.07	(a)
P2O5 S %	0.03	(a)
sum

Sc ppm	6.74	(b)
Co	7.15	(b)
Ni	40	(b)
Ba	65	(b)
Sm	1.81	(b)
Yb	1.41	(b)
technique (a) DBA, (b) INAA

Figure 2: Normalized REE diagrams for granulitic brecias (Stoffler et al. 1985).

Figure 3: Photomicrograph of thin section 67947,3. 2 mm across