Sample 67566
67566 Impact Melt Breccia 4.3 grams
Section titled “67566 Impact Melt Breccia 4.3 grams”
Figure 1: Photo of 67566. Scale is cm/mm. S72-51249
Introduction
Section titled “Introduction”67566 was collected from the south rim of North Ray Crater – see section on 67481.
Petrography
Section titled “Petrography”Ryder and Norman (1980) reported that 67566 had a “granoblastic” texture (figures 2 and 4). The protolith was clearly a breccia.
Chemistry
Section titled “Chemistry”Stoffler et al. (1985) reported that the composition of 67566 was similar to other granulitic breccia samples from NRC (table and figure 5).
Radiogenic age dating
Section titled “Radiogenic age dating”67566 has been outgassed to yield ages (figure 3).
Processing
Section titled “Processing”There a two thin section.
Table 1. Chemical composition of 67566
Section titled “Table 1. Chemical composition of 67566”| reference Stoffler85 | |
|---|---|
| 43.7 | (a) |
| 0.11 | (a) |
| 32.32 | (a) |
| 1.3 | (a) |
| 1.99 | (a) |
| 18.22 | (a) |
| 0.51 | (a) |
| 0.15 | (a) |
| 0.01 | (a) |
| 6.32 | (b) |
| 22.7 | (b) |
| 240 | (b) |
| 47 | (b) |
| 1.61 | (b) |
| 1.3 | (b) |
| technique: (a) DBA, (b) INAA | |
Figure 2a: Photomicrograph of thin section Figure 2b: Photomicrograph of thin section mm. From Ryder and Norman 1980. mm. From Ryder and Norman 1980.
Figure 3: Summary diagram of a lot of hard work showing age of 67566 (from Stoffler et al. 1985).
67566,2 with crossed polarizers. Field of view is 2 67566,1 with crossed polarizers. Field of view is 2
Lunar Sample Compendium C Meyer 2012
Figure 5: Normalized rare-earth-element diagram for 67566 compared with several granulitic breccias from rake samples taken at North Ray Crater (Stoffler et al. 1985).
References for 67566
Section titled “References for 67566”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.
Ryder G. and Norman M.D. (1980) Catalog of Apollo 16 rocks (3 vol.). Curator’s Office pub. #52, JSC #16904
Stöffler D., Ostertag R., Reimold W.U., Borchardt R., Malley J. and Rehfeldt A. (1981) Distribution and provenance of lunar highland rock types at North Ray Crater, Apollo 16. Proc. 12th Lunar Planet. Sci. Conf. 185-207.
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.
Smith J.V. and Steele I.M. (1972c) Apollo 16 rake samples 67515 to 68537: Sample classification, description and inventory. Curator Catalog, JSC
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.