National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

PB88210885

Publication Date	1988
Personal Author	Zelenka, B. R.
Page Count	30
Abstract	The Bureau of Mines (Bureau) reviewed all available information regarding geologic and depositional processes contributing to potential coastal and offshore platinum group metal (PGM) placer deposits around the Goodnews Bay Mining District. The Bureau found that favorable environments for PGM along with gold and chromite enrichment include: (1) buried paleofluvial channels; (2) recent paleofluvial channels with little marine sediment overburden; (3) beach deposits, particularly in the upper swash zone and near back beach environments; (4) plaeostrand lines; (5) shoal lag deposits inside the mouths of Goodnews and Chagvan Bays; and (6) bases of far offshore tidal ridges which may represent reworked glacial deposits.
Keywords	Platinum Mineral deposits Precious metals Coasts Alaska Offshore mining Placer mining Beaches Sites Glacial deposits Stratigraphy Ocean ridges Geomorphology Sediment transport Gold Chromites Maps Goodnews Bay Mining District(Alaska) Strategic metals
Source Agency	Bureau of Mines
NTIS Subject Category	48F - Geology & Geophysics 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Anchorage, AK. Alaska Field Operations Center.
Document Type	Technical Report
Title Note	Open file rept. (Proposed),
NTIS Issue Number	198817

Review of Favorable Offshore and Coastal Depositional Sites for Platinum-Group Metals in the Goodnews Bay Mining District, Alaska.

Review of Favorable Offshore and Coastal Depositional Sites for Platinum-Group Metals in the Goodnews Bay Mining District, Alaska.
PB88210885

Publication Date	1988
Personal Author	Zelenka, B. R.
Page Count	30
Abstract	The Bureau of Mines (Bureau) reviewed all available information regarding geologic and depositional processes contributing to potential coastal and offshore platinum group metal (PGM) placer deposits around the Goodnews Bay Mining District. The Bureau found that favorable environments for PGM along with gold and chromite enrichment include: (1) buried paleofluvial channels; (2) recent paleofluvial channels with little marine sediment overburden; (3) beach deposits, particularly in the upper swash zone and near back beach environments; (4) plaeostrand lines; (5) shoal lag deposits inside the mouths of Goodnews and Chagvan Bays; and (6) bases of far offshore tidal ridges which may represent reworked glacial deposits.
Keywords	Platinum Mineral deposits Precious metals Coasts Alaska Offshore mining Placer mining Beaches Sites Glacial deposits Stratigraphy Ocean ridges Geomorphology Sediment transport Gold Chromites Maps Goodnews Bay Mining District(Alaska) Strategic metals
Source Agency	Bureau of Mines
NTIS Subject Category	48F - Geology & Geophysics 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Anchorage, AK. Alaska Field Operations Center.
Document Type	Technical Report
Title Note	Open file rept. (Proposed),
NTIS Issue Number	198817