Sample 15211
15201 and 15211
Section titled “15201 and 15211”Soils 26.7 and 390.9 grams
Figure 1: Photo of boulder with location of 15211. AS15-86-11558.
Introduction
Section titled “Introduction”These soil were collected adjacent to the small boulder at station 2, Apollo 15. 15205 and 15206 were chipped off of the boulder and when 15205 was picked up, some soil (19201) was placed in same bag. !5211 was collected as a “fillet” sample of the boulder (figure 1) (see section on 15220).
Petrography
Section titled “Petrography”The maturity ( $I_s$ /FeO) of 15201 is 68 and that of 15211 is 60 (Morris et al. 1978). The average grain size is 52 microns (figure 4).
Chemistry
Section titled “Chemistry”The chemical composition of 15201 and 15211 is identical to that of the other soils at station 2, 15091, 15101, 15221 and 15231 (figures 2 and 3).
Figure 2: Chemical composition of 15211 compared with other Apollo soils.
Figure 3: Normalized rare-earth-element diagram for 15211.
Cosmogenic isotopes and exposure ages
Section titled “Cosmogenic isotopes and exposure ages”Rancitelli et al. (1972) determined the cosmic-rayinduced activity of 15211 as $^{22}$ Na = 64 dpm/kg, $^{26}$ Al = 152 dpm/kg, and $^{54}$ Mn = 12 dpm/kg. Keith et al. (1972) determined $^{22}$ Na = 59 dpm/kg, $^{26}$ Al = 139 dpm/kg, $^{54}$ Mn = 19 dpm/kg, $^{56}$ Co = 16 dpm/kg and $^{46}$ Sc = 3.4 dpm/kg.
Processing
Section titled “Processing”15200 and 15210 were returned in a sealed ALSRC (#1).
Table 1. Chemical composition of 15201
| reference weight | Korotev87 | ||||||
|---|---|---|---|---|---|---|---|
| SiO2 % TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 S % sum | 1.3 17.1 11.5 0.16 10.7 10.7 0.42 | (a) (a) (a) (a) (a) (a) (a) | |||||
| Sc ppm V | 22.1 | (a) | |||||
| Cr Co Ni Cu Zn Ga Ge ppb As Se Rb | 2410 37.7 225 | (a) (a) (a) | |||||
| Sr Y | 140 | ||||||
| Zr Nb Mo Ru Rh Pd ppb Ag ppb Cd ppb In ppb Sn ppb Sb ppb Te ppb | 320 | (a) | |||||
| Cs ppm Ba La Ce | 0.24 218 20.4 53 | (a) (a) (a) (a) | |||||
| Pr Nd Sm Eu Gd | 30 0.48 1.27 | (a) (a) (a) | |||||
| Tb Dy Ho Er | 1.78 | (a) | |||||
| Tm Yb Lu Hf Ta W ppb Re ppb | 6.6 0.99 7.6 0.9 | (a) (a) (a) (a) | |||||
| Os ppb Ir ppb | 7.6 | (a) | |||||
| Pt ppb Au ppb Th ppm U ppm technique: (a) INAA | 2.2 4.3 0.86 | (a) (a) (a) |
Figure 4: Grain size distribution of 15201 and 15211 (Graf 1993).
Table 2. Chemical composition of 15211.
| reference Cuttitta73 weight | Fruchter73 Baedecker72 | Wanke73 | Baedecker73 Keith72 | Rancitelli72 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiO2 % TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 S % sum | 46.35 1.34 17.73 11.66 0.16 10.48 11.68 0.44 0.19 0.19 | (a) (a) (a) (a) (a) (a) | (a) 1.42 (a) 17 (a) 11.96 (a) 0.425 | (b) (b) (b) | 46.6 1.17 17.24 11.55 0.15 10.76 11.2 0.43 0.17 | (b) (b) (b) (b) (b) (b) (b) (b) (b) | 0.18 | (d) 0.17 | (d) | ||||
| Sc ppm | 22 | (a) 23 | (b) | 21.1 | (b) | ||||||||
| V Cr Co Ni | 80 1574 50 325 | (a) (a) | (a) 2170 (a) 37 | (b) (b) | 240 | 2070 37 (c ) 290 | (b) (b) | (b) 262 | (c ) | ||||
| 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 Te ppb | 7.5 16 3 | (a) (a) (a) | 16 4.4 420 | (c ) (c ) (c ) | 15.1 4.4 420 | (c ) (c ) (c ) | |||||||
| 5 150 83 270 14 | (a) (a) (a) (a) | (a) 240 | (b) | ||||||||||
| 46 3.2 | (c ) (c ) | 46 3.1 | (c ) (c ) | ||||||||||
| Cs ppm Ba La Ce | 315 32 | (a) | (a) 25 55 | (b) (b) | 22 52 | (b) (b) | |||||||
| Pr Nd Sm Eu | 10.4 1.43 | (b) (b) | 36 10.1 1.33 | (b) (b) (b) | |||||||||
| Gd Tb Dy Ho | 1.9 | (b) | 2 14.6 3.2 | (b) (b) (b) | |||||||||
| Er Tm Yb Lu Hf Ta W ppb Re ppb | 7.7 | (a) 7.1 1.12 7.2 1.3 | (b) (b) (b) (b) | 7.2 0.93 7.2 0.97 | (b) (b) (b) (b) | ||||||||
| Os ppb Ir ppb | 8.2 | (c ) | 8.2 | (c ) | |||||||||
| Pt ppb Au ppb Th ppm U ppm | 3.3 | (c ) | 3.75 0.98 | (d) 3.95 | (d) (d) | ||||||||
| (d) 1.02 technique: (a) “microchemical” and OES, (b) INAA, (c ) RNAA, (d) radiation count. |
References for 15201 and 15211
Section titled “References for 15201 and 15211”Baedecker P.A., Chou C.-L. and Wasson J.T. (1972) The extralunar component in lunar soils and breccias. Proc. 3rd Lunar Sci. Conf. 1343-1361.
Baedecker P.A., Chou C.-L., Grunewicz E.B. and Wasson J.T. (1973) Volatile and siderophile trace elements in Apollo 15 samples – geochemical implications. Proc. 4th Lunar Sci. Conf. 1177-1196.
Butler P. (1971) Lunar Sample Catalog, Apollo 15. Curators’ Office, MSC 03209
Cuttitta F., Rose H.J., Annell C.S., Carron M.K., Christian R.P., Ligon D.T., Dwornik E.J., Wright T.L. and Greenland L.P. (1973) Chemistry of twenty-one igneous rocks and soils returned by the Apollo 15 mission. Proc. 4th Lunar Sci. Conf. 1081-1096.
Fruchter J.S., Stoeser J.W., Lindstrom M.M. and Goles G.G. (1973) Apollo 15 clastic materials and their relationship to local geologic features. Proc. 4th Lunar Sci. Conf. 1227-1237.
Graf J.C. (1993) Lunar Soils Grain Size Catalog. NASA Reference Pub. 1265, March 1993
Heiken G.H. (1974) A catalog of lunar soils. JSC Curator
Heiken G.H. (1975) Petrology of lunar soils. Rev. Geophys. Space Phys. 13, 567-587.
Jovanovic S. and Reed G.W. (1975a) Cl and $P_2O_5$ systematics: Clues to early lunar magmas. Proc. 6th Lunar Sci. Conf. 1737-1751.
Keith J.E., Clark R.S. and Richardson K.A. (1972) Gammaray measurements Apollo 12, 14 and 15 lunar samples. Proc. 3rd Lunar Sci. Conf. 1671-1681.
King E.A., Butler J.C. and Carman Max (1972) Chondrules in Apollo 14 samples and size analyses of Apollo 14 and 15 fines. Proc. 3rd Lunar Sci. Conf. 673-686.
Korotev R.L. (1987) Mixing levels, the Apennine Front soil component, and compositional trends in the Apollo 15 soils. Proc. 17th Lunar Planet. Sci. Conf. E411-431.
LSPET (1972a) The Apollo 15 lunar samples: A preliminary description. Science 175, 363-375.
LSPET (1972b) Preliminary examination of lunar samples. Apollo 15 Preliminary Science Report. NASA SP-289, 6-1—6-28.
Morris R.V. (1978) The surface exposure (maturity) of lunar soils: Some concepts and Is/FeO compilation. Proc. 9th Lunar Planet . Sci. Conf. 2287-2298.
Morris R.V., Score R., Dardano C. and Heiken G. (1983) Handbook of Lunar Soils. JSC 19069
Powell B.N. (1972) Apollo 15 Coarse Fines (4-10mm): Sample classification, description and inventory. MSC 03228 Curator’s Office JSC
Powell B.N., Aitken F.K. and Weiblen P.W. (1973) Classification, distribution and origin of lithic fragments from the Hadley-Apennine region. Proc. 4th Lunar Sci. Conf. 445-460.
Rancitelli L.A., Perkins R.W., Felix W.D. and Wogman N.A. (1972) Lunar surface processes and cosmic ray characterization from Apollo 12-15 lunar samples analyses. Proc. 3rd Lunar Sci. Conf. 1681-1691.
Ryder G. and Sherman S.B. (1989) The Apollo 15 Coarse Fines. Curators Office #81, JSC#24035
Swann G.A., Hait M.H., Schaber G.C., Freeman V.L., Ulrich G.E., Wolfe E.W., Reed V.S. and Sutton R.L. (1971b) Preliminary description of Apollo 15 sample environments. U.S.G.S. Interagency report: 36. pp219 with maps
Swann G.A., Bailey N.G., Batson R.M., Freeman V.L., Hait M.H., Head J.W., Holt H.E., Howard K.A., Irwin J.B., Larson K.B., Muehlberger W.R., Reed V.S., Rennilson J.J., Schaber G.G., Scott D.R., Silver L.T., Sutton R.L., Ulrich G.E., Wilshire H.G. and Wolfe E.W. (1972) 5. Preliminary Geologic Investigation of the Apollo 15 landing site. In Apollo 15 Preliminary Science Rpt. NASA SP-289. pages 5-1-112.
Walker R.J. and Papike J.J. (1981) The Apollo 15 regolith: Chemical modeling and mare/highland mixing. Proc. 12th Lunar Planet. Sci. Conf. 509-517.
Wanke H., Baddenhausen H., Dreibus G., Jagoutz E., Kruse H., Palme H., Spettle B. and Teschke F. (1972) Multielement analyses of Apollo 15, 16 and 17 samples and the bulk composition of the moon. Proc. 4th Lunar Sci. Conf. 1461-1481.