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Oxygen and hydrogen isotope geochemistry of the Star-Morning Mine, Coeur d'Alene mining district, Idaho
James Constantopoulos and Peter B. Larson
Oxygen and hydrogen isotope geochemistry of the Star-Morning Mine, Coeur d'Alene mining district, Idaho
Geology (Boulder) (February 1991) 19 (2): 131-134
Oxygen and hydrogen isotope geochemistry of the Star-Morning Mine, Coeur d'Alene mining district, Idaho
Geology (Boulder) (February 1991) 19 (2): 131-134
Index Terms/Descriptors
- Coeur d'Alene mining district
- connate waters
- D/H
- deuterium
- economic geology
- fluid inclusions
- framework silicates
- geochemical indicators
- geochemistry
- hydrogen
- hydrothermal alteration
- hydrothermal processes
- Idaho
- inclusions
- interpretation
- isotopes
- lead-zinc deposits
- metal ores
- metamorphism
- metasomatism
- meteoric water
- mineral deposits, genesis
- minerals
- O-18/O-16
- ore-forming fluids
- oxygen
- quartz
- quartz veins
- Shoshone County Idaho
- silica minerals
- silicates
- silver ores
- stable isotopes
- United States
- veins
- northern Idaho
- Star-Morning Mine
Latitude & Longitude
Abstract
Oxygen isotope values of vein quartz from the Star-Morning mine range from 13.2ppm to16.2ppm relative to standard mean ocean water. Calculated isotopic values of water in equilibrium with the vein quartz at 325 degrees C range from 7.2ppm to 10.2ppm. The delta (super 18) O (sub quartz) values decrease with depth in the mine. The delta D values of quartz inclusion fluids range from -18ppm to -105ppm and do not significantly correlate with depth. Oxygen isotope values of Belt Supergroup wholerock samples range from 13.8ppm to 16.8ppm. The data indicate that the fluids were a mix of metamorphic water released from the Belt rocks during low-grade metamorphism, and (super 18) O-shifted meteoric water.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 19
Serial Issue: 2
Title: Oxygen and hydrogen isotope geochemistry of the Star-Morning Mine, Coeur d'Alene mining district, Idaho
Affiliation: Univ. Idaho, Dep. Geol. and Geol. Eng.,
Moscow, ID,
United States
Pages: 131-134
Published: 199102
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 31
Accession Number: 1991-011334
Categories: Economic geology, geology of ore depositsIsotope geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N46°55'00" - N48°04'60", W116°19'60" - W114°55'00"
Secondary Affiliation: Wash. State Univ.,
USA,
United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1991
