Sample 68535
68535 – 8 grams 68536 – 1.8 grams Impact Melt Breccia with glass
Section titled “68535 – 8 grams 68536 – 1.8 grams Impact Melt Breccia with glass”
Figure 1: Photo of 68535 with mm scale. S72-49572
Figure 2: Photo of 68536 with mm scale. S72-51253
station 8 soil in an area thought of have disturbance from South Ray Crater – see section on 68501. They are a collection of impact melt fragments cemented by a black glass. The impact melt is aphanitic with abundant feldspar laths. The glass is more aluminous
Introduction then the lithic fragments. There are two thin sections 68535 and 68536 are rake samples collected from of 68536, but none for 68535.
Figure 3: Photomicrograph of thin section of 68536. 2 mm across
| reference weight | i-melt See86 | glass Morris86 | i-melt Ryder82 | |||
|---|---|---|---|---|---|---|
| SiO2 % TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 S % sum | 45.38 0.24 26.62 4.39 0.06 7.89 14.95 1.26 0.06 | (a) | (a) 44.73 (a) 0.14 (a) 31.61 (a) ~3 | (b) (b) (b) | (b) 11.2 | (b) |
| (a) 2.29 (a) 17.7 (a) 0.4 (a) 0.08 | (b) (b) (b) | (b) 0.51 | (b) | |||
| Sc ppm V | 6.74 | (b) 9.3 | (b) | |||
| Cr Co Ni Cu Zn Ga Ge ppb As Se Rb Sr Y Zr Nb Mo Ru Rh Pd ppb Ag ppb Cd ppb In ppb Sn ppb Sb ppb | 501 19 291 | (b) (b) | (b) 210 | (b) | ||
| Te ppb Cs ppm Ba La Ce Pr | 123 11.05 33 | (b) (b) | (b) 23.6 | (b) | ||
| Nd Sm Eu | 5.2 1.04 | (b) 10.9 (b) 1.4 | (b) (b) | |||
| Gd Tb Dy | 0.9 | (b) | ||||
| Ho Er Tm Yb Lu Hf Ta W ppb Re ppb Os ppb | 3.35 0.46 2.96 0.4 | (b) (b) (b) | (b) 1.1 | (b) | ||
| Ir ppb Pt ppb Au ppb Th ppm U ppm technique: (a) DBA, (b) INAA | 1.45 0.39 | (b) (b) |
References for 68535 and 536
Section titled “References for 68535 and 536”Butler P. (1972a) Lunar Sample Information Catalog Apollo 16. Lunar Receiving Laboratory. MSC 03210 Curator’s Catalog. pp. 370.
Hunter R.H. and Taylor L.A. (1981) Rust and schreibersite in Apollo 16 highland rocks: Manifestations of volatileelement mobility. Proc. 12th Lunar Planet. Sci. Conf. 253- 259.
Korotev R.L. (1994) Compositional variation in Apollo 16 impact melt breccias and inferences for the geology and bombardment history of the central highlands of the Moon. Geochim. Cosmochim. Acta 58, 3931-3969.
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.
Morris R.V., See T.H. and Horz F. (1986) Composition of the Cayley Formation at Apollo 16 as inferred from impact melt splashes. Proc. 17th Lunar Planet. Sci. Conf. in J. Geophys. Res. 90, E21-E42.
Ryder G. and Norman M.D. (1980) Catalog of Apollo 16 rocks (3 vol.). Curator’s Office pub. #52, JSC #16904
Ryder G. and Seymour R. (1982) Chemistry of Apollo 16 impact melts: Numerous melt sheets, lunar cratering history and the Cayley-Descartes distinction (abs). Lunar Planet. Sci. XIII, 673-674. Luny Institute in Houston.
See T.H., Horz F. and Morris R.V. (1986) Apollo 16 impactmelt splashes: Petrography and major-element composition. Proc. 17th Lunar Planet. Sci. Conf. in J. Geophys. Res. 91, E3-E20.
Smith J.V. and Steele I.M. (1972c) Apollo 16 rake samples 67515 to 68537: Sample classification, description and inventory. Curator Catalog, JSC
Steele I.M. and Smith J.V. (1973) Mineralogy and petrology of some Apollo 16 rocks and fines: General petrologic model of the moon. Proc. 4th Lunar Sci. Conf. 519-536.
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.