The Resource Distribution of trace elements in olivines and proxenes - an experimental study, by Melvin Leroy Bird

Distribution of trace elements in olivines and proxenes - an experimental study, by Melvin Leroy Bird

Label
Distribution of trace elements in olivines and proxenes - an experimental study
Title
Distribution of trace elements in olivines and proxenes - an experimental study
Statement of responsibility
by Melvin Leroy Bird
Creator
Author
Subject
Language
eng
Summary
"Olivine, pyroxene, and spinel were crystallized in the ternary system anorthite-forsterite-silica to which trace amounts of the transition metal ions Cr3, Fe2+, Mn2+, Co2+, Ni2+, and Cu2+ had been added. The resulting concentrations of the transition metal ions in the liquid and crystalline phases were determined using the electron microprobe. The results, given as free energies and partition functions, indicate the order of substitution of the dipositive ions in all crystals to be Ni2+, Co2+, Mn2+, Cu2+, and Fe2+ according to the predictions of crystal field theory. The ion Cr3+ substituted in greater or lesser quantities depending on the crystalline phase. The data at different temperatures permitted the calculation of the entropy function for each element. The results demonstrate that the higher concentrations of trace elements in crystals at lower temperatures are largely due to the entropy function, i.e. [delta]S is negative. The modification of the crystallization paths of this system by the small amounts of trace elements indicates the need for further study in this area"--Abstract, leaf ii
Member of
Cataloging source
UMR
http://library.link/vocab/creatorDate
1931-
http://library.link/vocab/creatorName
Bird, Melvin Leroy
Degree
Ph. D.
Dissertation year
1971.
Granting institution
University of Missouri--Rolla
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Olivine
  • Transition metal ions
  • Spinel
  • Electron probe microanalysis
Label
Distribution of trace elements in olivines and proxenes - an experimental study, by Melvin Leroy Bird
Instantiates
Production
Note
  • Vita
  • Typescript
Bibliography note
Includes bibliographical references (leaves 246-247)
Carrier category
volume
Carrier category code
  • nc
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
6038830
Dimensions
29 cm
Extent
x, 249 leaves
Media category
unmediated
Media MARC source
rdamedia.
Media type code
  • n
Other physical details
illustrations
System control number
(OCoLC)6038830
Label
Distribution of trace elements in olivines and proxenes - an experimental study, by Melvin Leroy Bird
Production
Note
  • Vita
  • Typescript
Bibliography note
Includes bibliographical references (leaves 246-247)
Carrier category
volume
Carrier category code
  • nc
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
6038830
Dimensions
29 cm
Extent
x, 249 leaves
Media category
unmediated
Media MARC source
rdamedia.
Media type code
  • n
Other physical details
illustrations
System control number
(OCoLC)6038830

Library Locations

    • Curtis Laws Wilson LibraryBorrow it
      400 West 14th Street, Rolla, MO, 65409, US
      37.955220 -91.772210
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