Significance of Cl/P/sub 2/O/sub 5/ ratios from lunar samples: a response

Conference · Thu Jan 01 00:00:00 EST 1981 · Geochim. Cosmochim. Acta, Suppl.; (United States)

OSTI ID:6302130

Reed, Jr, G W; Jovanovic, S

In the absence of quantitative measurements of schreibersite and akaganeite in lunar highland breccias, the fractions of the total Cl and P that are present in these phases cannot be ascertained. On the basis of lunar Fe/sup 0/ concentrations, Fe/sup 0//Ni ratios and KREEP elemental constituents in breccias, estimates of the amounts and mineral sites of P are made. Only minor P is related to metal. Relationships between Fe/sup 0/, Fe/sup + +/, Cl/sub r/ and P in four Apollo 16 breccias and melt rocks may be explained by the fraction of a single residual liquid that each rock contains. Previously reported Cl/sub r//P/sub 2/O/sub 5/ groupings can be based on basalts alone in two cases and on highland breccias in a third; soil and regolith breccia data are consistent with, but not necessary for identifying the groups. The systematics can only be reconciled to a fundamental characteristic of lunar samples, eatablished early and preserved.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 6302130
• Journal Information: Geochim. Cosmochim. Acta, Suppl.; (United States), Vol. 12B; Conference: 12. lunar and planetary science conference, Houston, TX, USA, 16 Mar 1981
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
LUNAR MATERIALS
QUANTITY RATIO
APATITES
APOLLO PROJECT
BASALT
CHEMICAL COMPOSITION
CHLORINE
IRON
NICKEL
PHOSPHORUS
PHOSPHORUS OXIDES
ROCKS
CHALCOGENIDES
ELEMENTS
HALOGENS
IGNEOUS ROCKS
MATERIALS
METALS
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHATE MINERALS
PHOSPHORUS COMPOUNDS
TRANSITION ELEMENTS
VOLCANIC ROCKS
640107* - Astrophysics & Cosmology- Planetary Phenomena