Hydrothermal alteration of felsic volcanic rocks at the Helen Siderite Deposit, Wawa, Ontario
Journal Article
·
· Econ. Geol.; (United States)
Felsic lavas and pyroclastic rocks, underlying the Archean Helen iron-formation, have been variably altered by hydrothermal solutions which, when discharged onto the sea floor, formed the Helen siderite deposit. Within the footwall volcanic sequence five chemically and mineralogically distinct alteration types have been defined: least altered, sericite, chlorite chloritoid, and ankerite. Based on mineralogy and chemistry of the altered rocks and on the geometry of the alteration zones, an alteration model is proposed.
- Research Organization:
- Department of Geology, University of Minnesota-Duluth, Duluth, Minnesota
- OSTI ID:
- 5240491
- Journal Information:
- Econ. Geol.; (United States), Journal Name: Econ. Geol.; (United States) Vol. 79:6; ISSN ECGLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Are the alteration halos of massive sulfide deposits syngenetic Evidence from U-Pb dating of hydrothermal rutile at the Kidd volcanic center, Abitibi subprovince, Canada
Hydrothermal alteration and fluid inclusion geothermometry of Los Humeros geothermal field, Mexico
Metamorphism, alteration, and timing of mineralization at Hemlo, Ontario
Journal Article
·
Fri Jun 01 00:00:00 EDT 1990
· Geology; (USA)
·
OSTI ID:6419177
Hydrothermal alteration and fluid inclusion geothermometry of Los Humeros geothermal field, Mexico
Journal Article
·
Sat Dec 31 23:00:00 EST 1988
· Geothermics (International Journal of Geothermal Research and its Applications); (UK)
·
OSTI ID:5791549
Metamorphism, alteration, and timing of mineralization at Hemlo, Ontario
Conference
·
Mon Dec 31 23:00:00 EST 1984
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:6874833
Related Subjects
58 GEOSCIENCES
580400* -- Geochemistry-- (-1989)
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METALS
BASALT
CALCIUM
CANADA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATE MINERALS
CARBONATES
CHALCOGENIDES
CHEMISTRY
ELEMENTS
GEOCHEMISTRY
GEOLOGIC MODELS
HYDROGEN COMPOUNDS
HYDROTHERMAL ALTERATION
IGNEOUS ROCKS
IRON
IRON CARBONATES
IRON COMPOUNDS
IRON ORES
MAGNESIUM
MANGANESE
METALS
METAMORPHISM
MINERALOGY
MINERALS
NORTH AMERICA
ONTARIO
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
QUARTZ
ROCK-FLUID INTERACTIONS
ROCKS
SEA BED
SEAWATER
SIDERITE
SILICON COMPOUNDS
SILICON OXIDES
SODIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VOLCANIC ROCKS
WATER
580400* -- Geochemistry-- (-1989)
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METALS
BASALT
CALCIUM
CANADA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATE MINERALS
CARBONATES
CHALCOGENIDES
CHEMISTRY
ELEMENTS
GEOCHEMISTRY
GEOLOGIC MODELS
HYDROGEN COMPOUNDS
HYDROTHERMAL ALTERATION
IGNEOUS ROCKS
IRON
IRON CARBONATES
IRON COMPOUNDS
IRON ORES
MAGNESIUM
MANGANESE
METALS
METAMORPHISM
MINERALOGY
MINERALS
NORTH AMERICA
ONTARIO
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
QUARTZ
ROCK-FLUID INTERACTIONS
ROCKS
SEA BED
SEAWATER
SIDERITE
SILICON COMPOUNDS
SILICON OXIDES
SODIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VOLCANIC ROCKS
WATER