Aspects of the history of 66095 based on trace elements in clasts and whole rock

Jovanovic, S; Reed, Jr, G W

Title: Aspects of the history of 66095 based on trace elements in clasts and whole rock

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Abstract

Halogens, P, U and Na are reported in anorthositic and basaltic clasts and matrix from rusty rock 66095. Large fractions of Cl and Br associated with the separated phases from 66095 are soluble in H/sub 2/O. Up to two orders of magnitude variation in concentrations of these elements in the breccia components and varying H/sub 2/O-soluble Cl/Br ratios indicate different sources of volatiles. An approximately constant ratio of the H/sub 2/O- to 0.1 M HNO/sub 3/-soluble Br in the various components suggests no appreciable alteration in the original distributions of this element in the breccia forming processes. Up to 50% or more of the phosphorus and of the non-H/sub 2/O-soluble Cl was dissolved from most of the breccia components by 0.1 M HNO/sub 3/. Clast and matrix residues from the leaching steps contain, in most cases, the Cl/P/sub 2/O/sub 5/ ratio found in 66095 whole rock and in a number of other Apollo 16 samples. Evidence that phosphates are the major P-phases in the brecia is based on the 0.1 M acid solubility of Cl and P in the matrix sample and on elemental concentrations which are consistent with those of KREEP.

Authors:: Jovanovic, S; Reed, Jr, G W

Publication Date:: Thu Jan 01 00:00:00 EST 1981

Research Org.:: Argonne National Lab., IL

OSTI Identifier:: 6792806

Resource Type:: Conference

Journal Name:: Geochim. Cosmochim. Acta, Suppl.; (United States)

Additional Journal Information:: Journal Volume: 12B; Conference: 12. lunar and planetary science conference, Houston, Texas, USA, 16 March 1981

Country of Publication:: United States

Language:: English

Subject:: 58 GEOSCIENCES; ROCKS; CLASSIFICATION; GEOCHEMISTRY; LEACHING; ANORTHOSITES; APOLLO PROJECT; BASALT; CHEMICAL COMPOSITION; HALOGEN COMPOUNDS; LUNAR MATERIALS; PHOSPHORUS; SODIUM; URANIUM; ACTINIDES; ALKALI METALS; CHEMISTRY; DISSOLUTION; ELEMENTS; GABBROS; IGNEOUS ROCKS; MATERIALS; METALS; NONMETALS; PLUTONIC ROCKS; SEPARATION PROCESSES; VOLCANIC ROCKS; 580300* - Mineralogy, Petrology, & Rock Mechanics- (-1989)

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                    Jovanovic, S, and Reed, Jr, G W. Aspects of the history of 66095 based on trace elements in clasts and whole rock.  United States: N. p., 1981. 
        Web.

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                    Jovanovic, S, & Reed, Jr, G W. Aspects of the history of 66095 based on trace elements in clasts and whole rock.  United States.

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                    Jovanovic, S, and Reed, Jr, G W. 1981.  
        "Aspects of the history of 66095 based on trace elements in clasts and whole rock".  United States.

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@article{osti_6792806,

  title        = {Aspects of the history of 66095 based on trace elements in clasts and whole rock},

  author       = {Jovanovic, S and Reed, Jr, G W},

  abstractNote = {Halogens, P, U and Na are reported in anorthositic and basaltic clasts and matrix from rusty rock 66095. Large fractions of Cl and Br associated with the separated phases from 66095 are soluble in H/sub 2/O. Up to two orders of magnitude variation in concentrations of these elements in the breccia components and varying H/sub 2/O-soluble Cl/Br ratios indicate different sources of volatiles. An approximately constant ratio of the H/sub 2/O- to 0.1 M HNO/sub 3/-soluble Br in the various components suggests no appreciable alteration in the original distributions of this element in the breccia forming processes. Up to 50% or more of the phosphorus and of the non-H/sub 2/O-soluble Cl was dissolved from most of the breccia components by 0.1 M HNO/sub 3/. Clast and matrix residues from the leaching steps contain, in most cases, the Cl/P/sub 2/O/sub 5/ ratio found in 66095 whole rock and in a number of other Apollo 16 samples. Evidence that phosphates are the major P-phases in the brecia is based on the 0.1 M acid solubility of Cl and P in the matrix sample and on elemental concentrations which are consistent with those of KREEP.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6792806},
  journal      = {Geochim. Cosmochim. Acta, Suppl.; (United States)},
number       = ,

  volume       = 12B,

  place        = {United States},

  year         = {Thu Jan 01 00:00:00 EST 1981},

  month        = {Thu Jan 01 00:00:00 EST 1981}

}

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