Philip L Verplanck
Philip Verplanck is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020) Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020)
The U.S. Geological Survey (USGS), Colorado Division of Reclamation, Mining and Safety (DRMS), and Coal Creek Watershed Coalition (CCWC) working independently, have intermittently collected samples of surface- and groundwater and springs around Mount Emmons, near Crested Butte, Colorado. This data release is a compilation of the comprehensive inorganic chemical analyses conducted as a...
Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013 Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013
This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE) deposit. Geochemistry data include major and trace element analytical results for 105 samples including alkaline igneous rocks, carbonatites, and weathered and oxidized samples. Samples were...
Filter Total Items: 85
The truth is in the stream: Use of tracer techniques and synoptic sampling to evaluate metal loading and remedial options in a hydrologically complex setting The truth is in the stream: Use of tracer techniques and synoptic sampling to evaluate metal loading and remedial options in a hydrologically complex setting
Two synoptic sampling campaigns were conducted to quantify metal loading to Illinois Gulch, a small stream affected by historical mining activities. The first campaign was designed to determine the degree to which Illinois Gulch loses water to the underlying mine workings, and to determine the effect of these losses on observed metal loads. The second campaign was designed to evaluate...
Authors
Robert L. Runkel, Philip L. Verplanck, Katherine Walton-Day, R. Blaine McCleskey, Patrick Byrne
Cathodoluminescence response of barite at room and liquid nitrogen temperatures Cathodoluminescence response of barite at room and liquid nitrogen temperatures
Rare earth element (REE) enrichment in the Elk Creek carbonatite, Nebraska USA, is comparable to ore grade enrichment in carbonatite-hosted REE deposits[1]. Petrographic examination of textures documents a complex history of crystallization, brecciation, recrystallization, oxidation, and near surface alteration. Barite (BaSO4) is present in most units, including REE-enriched zones, such...
Authors
Heather A. Lowers, Colin MacRae, Nick Wilson, Philip L. Verplanck
Petrogenesis and rare earth element mineralization of the Elk Creek carbonatite, Nebraska, USA Petrogenesis and rare earth element mineralization of the Elk Creek carbonatite, Nebraska, USA
Although carbonatites are the primary source of the world’s rare earth elements (REEs), the processes responsible for ore-grade REE enrichment in carbonatites are still poorly understood. In this study, we present a petrologic, geochemical, and isotopic evaluation of the Elk Creek carbonatite in southeast Nebraska to constrain the origin of REE mineralization. The Elk Creek carbonatite...
Authors
Philip Verplanck, G. Lang Farmer, Richard M. Kettler, Heather A. Lowers, Craig A. Johnson, Alan E. Koenig, Michael J. Blessington
Book review: Rare earth element resources: Indian context Book review: Rare earth element resources: Indian context
Rare Earth Element Resources: Indian Context. Yamuna Singh. 2020. ISBN 978-3-030-41353-8. Society of Earth Scientists Series, Springer, Cham, Switzerland, 269 Pp. Hardcover and eBook. €93.08 Rare Earth Element Resources: Indian Context by Yamuna Singh provides an excellent review of rare earth element (REE) deposits and occurrences in India with an emphasis on placer deposits, India’s...
Authors
Philip Verplanck
Rare earth element deposits in China: A review and new understandings Rare earth element deposits in China: A review and new understandings
No abstract available.
Authors
Yuling Xie, Philip L. Verplanck, Zengqian Hou, Richen Zhong
A 20-year record of water chemistry in an alpine setting, Mount Emmons, Colorado, USA A 20-year record of water chemistry in an alpine setting, Mount Emmons, Colorado, USA
From 1997 to the present, the U.S. Geological Survey and other agencies have been collecting water samples for chemical analyses on Mount Emmons in central Colorado, USA. The geology of Mount Emmons is dominated by Upper Cretaceous to Paleogene sediments of marine to continental origin, with felsic intrusive rocks interrupting the sedimentary block. Extensive sulphide-rich alteration...
Authors
Richard B. Wanty, Andrew H. Manning, Michaela Johnson, Philip Verplanck
Science and Products
Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020) Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020)
The U.S. Geological Survey (USGS), Colorado Division of Reclamation, Mining and Safety (DRMS), and Coal Creek Watershed Coalition (CCWC) working independently, have intermittently collected samples of surface- and groundwater and springs around Mount Emmons, near Crested Butte, Colorado. This data release is a compilation of the comprehensive inorganic chemical analyses conducted as a...
Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013 Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013
This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE) deposit. Geochemistry data include major and trace element analytical results for 105 samples including alkaline igneous rocks, carbonatites, and weathered and oxidized samples. Samples were...
Filter Total Items: 85
The truth is in the stream: Use of tracer techniques and synoptic sampling to evaluate metal loading and remedial options in a hydrologically complex setting The truth is in the stream: Use of tracer techniques and synoptic sampling to evaluate metal loading and remedial options in a hydrologically complex setting
Two synoptic sampling campaigns were conducted to quantify metal loading to Illinois Gulch, a small stream affected by historical mining activities. The first campaign was designed to determine the degree to which Illinois Gulch loses water to the underlying mine workings, and to determine the effect of these losses on observed metal loads. The second campaign was designed to evaluate...
Authors
Robert L. Runkel, Philip L. Verplanck, Katherine Walton-Day, R. Blaine McCleskey, Patrick Byrne
Cathodoluminescence response of barite at room and liquid nitrogen temperatures Cathodoluminescence response of barite at room and liquid nitrogen temperatures
Rare earth element (REE) enrichment in the Elk Creek carbonatite, Nebraska USA, is comparable to ore grade enrichment in carbonatite-hosted REE deposits[1]. Petrographic examination of textures documents a complex history of crystallization, brecciation, recrystallization, oxidation, and near surface alteration. Barite (BaSO4) is present in most units, including REE-enriched zones, such...
Authors
Heather A. Lowers, Colin MacRae, Nick Wilson, Philip L. Verplanck
Petrogenesis and rare earth element mineralization of the Elk Creek carbonatite, Nebraska, USA Petrogenesis and rare earth element mineralization of the Elk Creek carbonatite, Nebraska, USA
Although carbonatites are the primary source of the world’s rare earth elements (REEs), the processes responsible for ore-grade REE enrichment in carbonatites are still poorly understood. In this study, we present a petrologic, geochemical, and isotopic evaluation of the Elk Creek carbonatite in southeast Nebraska to constrain the origin of REE mineralization. The Elk Creek carbonatite...
Authors
Philip Verplanck, G. Lang Farmer, Richard M. Kettler, Heather A. Lowers, Craig A. Johnson, Alan E. Koenig, Michael J. Blessington
Book review: Rare earth element resources: Indian context Book review: Rare earth element resources: Indian context
Rare Earth Element Resources: Indian Context. Yamuna Singh. 2020. ISBN 978-3-030-41353-8. Society of Earth Scientists Series, Springer, Cham, Switzerland, 269 Pp. Hardcover and eBook. €93.08 Rare Earth Element Resources: Indian Context by Yamuna Singh provides an excellent review of rare earth element (REE) deposits and occurrences in India with an emphasis on placer deposits, India’s...
Authors
Philip Verplanck
Rare earth element deposits in China: A review and new understandings Rare earth element deposits in China: A review and new understandings
No abstract available.
Authors
Yuling Xie, Philip L. Verplanck, Zengqian Hou, Richen Zhong
A 20-year record of water chemistry in an alpine setting, Mount Emmons, Colorado, USA A 20-year record of water chemistry in an alpine setting, Mount Emmons, Colorado, USA
From 1997 to the present, the U.S. Geological Survey and other agencies have been collecting water samples for chemical analyses on Mount Emmons in central Colorado, USA. The geology of Mount Emmons is dominated by Upper Cretaceous to Paleogene sediments of marine to continental origin, with felsic intrusive rocks interrupting the sedimentary block. Extensive sulphide-rich alteration...
Authors
Richard B. Wanty, Andrew H. Manning, Michaela Johnson, Philip Verplanck