Oxygen and hydrogen isotope geochemistry of the Star-Morning mine, Coeur d'Alene mining district, Idaho

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Geology; (USA)

DOI:https://doi.org/10.1130/0091-7613(1991)019<0131:OAHIGO>2.3.CO;2· OSTI ID:5796453

Constantopoulos, J ^[1]; Larson, P B ^[2]

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1. Univ. of Idaho, Moscow (USA)
2. Washington State Univ., Pullman (USA)

Oxygen isotope values of vein quartz from the Star-Morning mine range from 13.2{per thousand} to 16.2{per thousand} relative to standard mean ocean water. Calculated isotopic values of water in equilibrium with the vein quartz at 325{degree}C range from 7.2{per thousand} to 10.2{per thousand}. The {delta}{sup 18}O{sub quartz} values decrease with depth in the mine. The {delta}D values of quartz inclusion fluids range from {minus}18{per thousand} to {minus}105{per thousand} and do not significantly correlate with depth. Oxygen isotope values of Belt Supergroup whole-rock samples range from 13.8{per thousand} to 16.8{per thousand}. The data indicate that the fluids were a mix of metamorphic water released from the Belt rocks during low-grade metamorphism, and {sup 18}O-shifted meteoric water.

• OSTI ID: 5796453
• Journal Information: Geology; (USA), Vol. 19:2; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
GEOLOGIC DEPOSITS
GEOCHEMISTRY
IDAHO
DEPTH
GEOLOGY
HYDROGEN ISOTOPES
ISOTOPE RATIO
LEAD ORES
METAMORPHISM
METEORIC WATER
MINES
OXYGEN 18
QUARTZ
RESERVOIR FLUIDS
SILVER ORES
ZINC ORES
CHALCOGENIDES
CHEMISTRY
DIMENSIONS
EVEN-EVEN NUCLEI
FEDERAL REGION X
FLUIDS
GROUND WATER
HYDROGEN COMPOUNDS
ISOTOPES
LIGHT NUCLEI
MINERALS
NORTH AMERICA
NUCLEI
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
SILICON COMPOUNDS
SILICON OXIDES
STABLE ISOTOPES
UNDERGROUND FACILITIES
USA
WATER
580000* - Geosciences