Zobrazeno 1 - 10
of 11
pro vyhledávání: '"C. E. Roberson"'
Publikováno v:
Geochimica et Cosmochimica Acta. 53:2811-2822
Open-system, continuous-titration experiments have been done in which a slow flux of ∼0.02 molar solution of Mn2+ chloride, nitrate, or perchlorate with Cu2+ or Ni2+ in lesser concentrations was introduced into an aerated reactor solution held at c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd58a6c41e646343f2320cc042235f93
https://doi.org/10.1016/0016-7037(89)90159-2
https://doi.org/10.1016/0016-7037(89)90159-2
Publikováno v:
Geochimica et Cosmochimica Acta. 48:213-218
Carbonate fluorapatite has been synthesized in seawater in an experiment of nearly 10-years duration. The addition of phosphate to seawater whose fluoride concentration had been increased to 7.6 mg/l brought about an initial amorphous phosphate preci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d41f20881a5f2b978cd8ae634ac5250f
https://doi.org/10.1016/0016-7037(84)90365-x
https://doi.org/10.1016/0016-7037(84)90365-x
Publikováno v:
Geochimica et Cosmochimica Acta. 51:1539-1547
A precipitate of nearly pure hetaerolite, ZnMn 2 O 4 , a spinel-structured analog of hausmannite, Mn 3 O 4 , was prepared by an irreversible wprecipitation of zinc with manganese at 25°C. The synthesis technique entailed constant slow addition of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7282869500eb9c6d1957dd92129a12d9
https://doi.org/10.1016/0016-7037(87)90335-8
https://doi.org/10.1016/0016-7037(87)90335-8
Publikováno v:
Geochimica et Cosmochimica Acta. 49:801-810
A precipitate of cobalt oxyhydroxides formed by bubbling oxygen through a dilute solution of Co(NO3)2 held at pH 9.0 and 25°C was aged for 23 months in contact with the original solution, with access to atmospheric oxygen. Co3O4 and CoOOH were ident
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02e8035eec8d5e62ceded1cbefce2b06
https://doi.org/10.1016/0016-7037(85)90173-5
https://doi.org/10.1016/0016-7037(85)90173-5
Publikováno v:
Water Resources Research. 18:563-570
Beta MnOOH is precipitated preferentially (with respect to Mn3O4) at temperatures near O°C when Mn2+ is oxidized in aerated aqueous solutions. Upon aging in solutions open to the atmosphere a slurry of βMnOOH tends to disproportionate to form MnO2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b46313b911c928bacb6745ec99bc0530
https://doi.org/10.1029/wr018i003p00563
https://doi.org/10.1029/wr018i003p00563
Autor:
C. E. Roberson
Publikováno v:
American Journal of Science. 262:56-65
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f52cbe692fb5b0b4f5160691b1dc1114
https://doi.org/10.2475/ajs.262.1.56
https://doi.org/10.2475/ajs.262.1.56
Autor:
John D. Hem, C. E. Roberson
Publikováno v:
Geochimica et Cosmochimica Acta. 32:1343-1351
The activity product constant of cryolite (Na 3 AlF 6 ) at 25°C and 1 atm total pressure was calculated from data for solutions from which synthetic cryolite or mixtures of cryolite and a solid apparently related to ralstonite had precipitated. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07837f74844f99a6d9e3fa5c1b96f6e9
https://doi.org/10.1016/0016-7037(68)90033-1
https://doi.org/10.1016/0016-7037(68)90033-1