Chemical and isotopic compositions of hydrothermal manifestations and minerals from the Broken Spur hydrothermal field

A representative collection of hydrothermal manifestations was sampled practically from all hydrothermal mounds of the Broken Spur hydrothermal vent field with use of the Mir manned submersibles during three cruises of R/V Akademik Mstislav Keldysh. Mineral associations characteristic for different morphological types of sulfide ores from hydrothermal pipes, plates, and diffusers are assessed. Particular attention is paid to distribution of minor elements and their distribution patterns determined by mineralogical zonation. Measured isotopic composition of sulfur in sulfide minerals varies from 0.4 to 5.2 per mil that indicates their similarity with ores from the Snake Pit vent field and is related to dilution of hot ore-bearing solutions by seawater and reduction of water sulfate ions to H2S with heavy isotopic composition.

Emerging technologies : Bio-Recovery Systems removal and recovery of metal ions from groundwater.

"August 1990."

Tungsten and molybdenum /

Pt. 3 by L. Lawry Waterhouse.

Metallurgy of molybdenum, niobium, and molybdenum-niobium alloys : a literature search /

"TID-3572."

The effects of ions in colloidal systems,

Mode of access: Internet.

The effects of ions in collodial systems,

Mode of access: Internet.

Exchange reactions of uranium ions in solution /

Work performed at the Argonne National Laboratory.

Molybdenum; its ores and their concentration, with a discussion of markets, prices, and uses,

"Tabulation of molybdenite and of wulfenite occurrences in the United States": p. 86-90.

Use of ion exchange for the separation of uranium from ions interfering in its colorimetric determination /

"Date Declassified: September 23, 1955."

Tables of interplanar spacings computed for the characteristic radiations of copper, molybdenum, iron, chromium and cobalt

"ASTIA document no. AD142344."

Investigation of the fatigue properties of molybdenum under various conditions of temperature, coatings, and stress concentration

"Materials Central, Contract No. AF 33(616)-5915, Project No. 7350."

The ion-exchange reactions of radioactive ions with soils and effects of organic compounds.

Vita.

An investigation of the relationship of hot-hardness to the elevated temperature extrusion behavior of selected arc-cast molybdenum base alloys.

"Project no. 7351."