Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska
A belt of small but numerous mercury deposits extends for about 500 km in the Kuskokwim River region of southwestern Alaska. The southwestern Alaska mercury belt is part of widespread mercury deposits of the circum Pacific region that are similar to other mercury deposits throughout the world becaus...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.759510 2023-05-15T17:05:41+02:00 Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska Gray, John E Gent, Carol A Snee, Lawrence W MEDIAN LATITUDE: 61.881954 * MEDIAN LONGITUDE: -159.115000 * SOUTH-BOUND LATITUDE: 61.025100 * WEST-BOUND LONGITUDE: -160.446000 * NORTH-BOUND LATITUDE: 62.656700 * EAST-BOUND LONGITUDE: -158.116000 2000-04-14 text/tab-separated-values, 173 data points https://doi.pangaea.de/10.1594/PANGAEA.759510 https://doi.org/10.1594/PANGAEA.759510 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.759510 https://doi.org/10.1594/PANGAEA.759510 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Gray, John E; Gent, Carol A; Snee, Lawrence W (2000): The southwestern Alaska Mercury Belt and its relationship to the circum-Pacific metallogenic mercury province. Polarforschung, 68, 187-196, hdl:10013/epic.29806.d001 Antimony Arsenic Atomic absorption spectrometry (AAS) Barometer_mine Cinnabar_Creek_mine Code Copper Decourcy_Mountain_mine Event label Fairview_prospect Geological sample GEOS Gold ICP Inductively coupled plasma Kolmakof_mine Lead Mercury Red_Devil_mine Rhyolite_prospect Sample code/label Silver SW Alaska USA White_Mountain_mine Zinc Dataset 2000 ftpangaea https://doi.org/10.1594/PANGAEA.759510 2023-01-20T08:52:08Z A belt of small but numerous mercury deposits extends for about 500 km in the Kuskokwim River region of southwestern Alaska. The southwestern Alaska mercury belt is part of widespread mercury deposits of the circum Pacific region that are similar to other mercury deposits throughout the world because they are epithermal with formation temperatures of about 200 °C, the ore is dominantly cinnabar with Hg-Sb-As±Au geochemistry, and mineralized forms include vein, vein breccias, stockworks, replacements, and disseminations. The southwestern Alaska mercury belt has produced about 1400 t of mercury, which is small on an international scale. However, additional mercury deposits are likely to be discovered because the terrain is topographically low with significant vegetation cover. Anomalous concentrations of gold in cinnabar ore suggest that gold deposits are possible in higher temperature environments below some of the Alaska mercury deposits. We correlate mineralization of the southwestern Alaska mercury deposits with Late Cretaceous and early Tertiary igneous activity. Our 40Ar/39Ar ages of 70 ±3 Ma from hydrothermal sericites in the mercury deposits indicate a temporal association of igneous activity and mineralization. Furthermore, we suggest that our geological ancl geochemical data from the mercury deposits indicate that ore fluids were generated primarily in surrounding sedimentary wall rocks when they were cut by Late Cretaceous and early Tertiary intrusions. In our ore genesis model, igneous activity provided the heat to initiate dehydration reactions and expel fluids from hydrous minerals and formational waters in the surrounding sedimentary wall rocks, causing thermal convection and hydrothermal fluid flow through permeable rocks and along fractures and faults. Our isotopic data from sulfide and alteration minerals of the mercury deposits indicate that ore fluids were derived from multiple sources, with most ore fluids originating from the sedimentary wall rocks. Dataset Kuskokwim Polarforschung Alaska PANGAEA - Data Publisher for Earth & Environmental Science Pacific Wall Rocks ENVELOPE(-129.312,-129.312,52.728,52.728) ENVELOPE(-160.446000,-158.116000,62.656700,61.025100) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antimony Arsenic Atomic absorption spectrometry (AAS) Barometer_mine Cinnabar_Creek_mine Code Copper Decourcy_Mountain_mine Event label Fairview_prospect Geological sample GEOS Gold ICP Inductively coupled plasma Kolmakof_mine Lead Mercury Red_Devil_mine Rhyolite_prospect Sample code/label Silver SW Alaska USA White_Mountain_mine Zinc |
spellingShingle |
Antimony Arsenic Atomic absorption spectrometry (AAS) Barometer_mine Cinnabar_Creek_mine Code Copper Decourcy_Mountain_mine Event label Fairview_prospect Geological sample GEOS Gold ICP Inductively coupled plasma Kolmakof_mine Lead Mercury Red_Devil_mine Rhyolite_prospect Sample code/label Silver SW Alaska USA White_Mountain_mine Zinc Gray, John E Gent, Carol A Snee, Lawrence W Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
topic_facet |
Antimony Arsenic Atomic absorption spectrometry (AAS) Barometer_mine Cinnabar_Creek_mine Code Copper Decourcy_Mountain_mine Event label Fairview_prospect Geological sample GEOS Gold ICP Inductively coupled plasma Kolmakof_mine Lead Mercury Red_Devil_mine Rhyolite_prospect Sample code/label Silver SW Alaska USA White_Mountain_mine Zinc |
description |
A belt of small but numerous mercury deposits extends for about 500 km in the Kuskokwim River region of southwestern Alaska. The southwestern Alaska mercury belt is part of widespread mercury deposits of the circum Pacific region that are similar to other mercury deposits throughout the world because they are epithermal with formation temperatures of about 200 °C, the ore is dominantly cinnabar with Hg-Sb-As±Au geochemistry, and mineralized forms include vein, vein breccias, stockworks, replacements, and disseminations. The southwestern Alaska mercury belt has produced about 1400 t of mercury, which is small on an international scale. However, additional mercury deposits are likely to be discovered because the terrain is topographically low with significant vegetation cover. Anomalous concentrations of gold in cinnabar ore suggest that gold deposits are possible in higher temperature environments below some of the Alaska mercury deposits. We correlate mineralization of the southwestern Alaska mercury deposits with Late Cretaceous and early Tertiary igneous activity. Our 40Ar/39Ar ages of 70 ±3 Ma from hydrothermal sericites in the mercury deposits indicate a temporal association of igneous activity and mineralization. Furthermore, we suggest that our geological ancl geochemical data from the mercury deposits indicate that ore fluids were generated primarily in surrounding sedimentary wall rocks when they were cut by Late Cretaceous and early Tertiary intrusions. In our ore genesis model, igneous activity provided the heat to initiate dehydration reactions and expel fluids from hydrous minerals and formational waters in the surrounding sedimentary wall rocks, causing thermal convection and hydrothermal fluid flow through permeable rocks and along fractures and faults. Our isotopic data from sulfide and alteration minerals of the mercury deposits indicate that ore fluids were derived from multiple sources, with most ore fluids originating from the sedimentary wall rocks. |
format |
Dataset |
author |
Gray, John E Gent, Carol A Snee, Lawrence W |
author_facet |
Gray, John E Gent, Carol A Snee, Lawrence W |
author_sort |
Gray, John E |
title |
Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
title_short |
Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
title_full |
Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
title_fullStr |
Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
title_full_unstemmed |
Tab. 1: Trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern Alaska |
title_sort |
tab. 1: trace-element concentrations in ore samples collected from mercury mines and deposits in southwestern alaska |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.759510 https://doi.org/10.1594/PANGAEA.759510 |
op_coverage |
MEDIAN LATITUDE: 61.881954 * MEDIAN LONGITUDE: -159.115000 * SOUTH-BOUND LATITUDE: 61.025100 * WEST-BOUND LONGITUDE: -160.446000 * NORTH-BOUND LATITUDE: 62.656700 * EAST-BOUND LONGITUDE: -158.116000 |
long_lat |
ENVELOPE(-129.312,-129.312,52.728,52.728) ENVELOPE(-160.446000,-158.116000,62.656700,61.025100) |
geographic |
Pacific Wall Rocks |
geographic_facet |
Pacific Wall Rocks |
genre |
Kuskokwim Polarforschung Alaska |
genre_facet |
Kuskokwim Polarforschung Alaska |
op_source |
Supplement to: Gray, John E; Gent, Carol A; Snee, Lawrence W (2000): The southwestern Alaska Mercury Belt and its relationship to the circum-Pacific metallogenic mercury province. Polarforschung, 68, 187-196, hdl:10013/epic.29806.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.759510 https://doi.org/10.1594/PANGAEA.759510 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.759510 |
_version_ |
1766060373139521536 |