Rights statement: https://www.cambridge.org/core/journals/mineralogical-magazine/article/occurrence-of-wakefieldite-a-rare-earth-element-vanadate-in-the-rhyolitic-joe-lott-tuff-utah-usa/227B7FFBA9E68B85D426B713372D3BC1
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The occurrence of wakefieldite, a rare earth element vanadate, in the rhyolitic Joe Lott Tuff, Utah, USA
AU - Bagiński, B.
AU - MacDonald, R.
AU - Belkin, H.E.
AU - Kotowski, J.
AU - Jokubauskas, P.
AU - Marciniak-Maliszewska, B.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - The high-silica rhyolitic Joe Lott Tuff was erupted at 19.2 ± 0.4 Ma from the Mount Belknap caldera, SW Utah. Certain units in the tuff contain two species of wakefieldite, the Nd- A nd Y-dominant types. They occur in disseminated streaks and patches in association with rhodochrosite, calcite, Fe oxide, cerite-(Ce), and a Mn silicate (caryopilite?), thought to have been deposited from hydrothermal fluids. The wakefieldites contain the highest levels of As (≤15.34 wt.% As2O5) and P (≤5.7 wt.% P2O5) yet recorded in this mineral, indicating significant solid solution towards chernovite-(Y) and xenotime-(Y). Thorium levels are also unusually high (≤14.2 wt.% ThO2). The source of the hydrothermal fluid(s) is unknown but might be related to uranium mineralisation in the region, in that As, V and U are commonly associated in such deposits. © 2019 Mineralogical Society of Great Britain and Ireland.
AB - The high-silica rhyolitic Joe Lott Tuff was erupted at 19.2 ± 0.4 Ma from the Mount Belknap caldera, SW Utah. Certain units in the tuff contain two species of wakefieldite, the Nd- A nd Y-dominant types. They occur in disseminated streaks and patches in association with rhodochrosite, calcite, Fe oxide, cerite-(Ce), and a Mn silicate (caryopilite?), thought to have been deposited from hydrothermal fluids. The wakefieldites contain the highest levels of As (≤15.34 wt.% As2O5) and P (≤5.7 wt.% P2O5) yet recorded in this mineral, indicating significant solid solution towards chernovite-(Y) and xenotime-(Y). Thorium levels are also unusually high (≤14.2 wt.% ThO2). The source of the hydrothermal fluid(s) is unknown but might be related to uranium mineralisation in the region, in that As, V and U are commonly associated in such deposits. © 2019 Mineralogical Society of Great Britain and Ireland.
KW - As
KW - Joe Lott Tuff
KW - P and Th enrichment
KW - wakefieldite-(Nd)
KW - wakefieldite-(Y)
KW - Arsenic
KW - Calcite
KW - Iron oxides
KW - Manganese compounds
KW - Rare earths
KW - Silica
KW - Silicates
KW - Thoria
KW - Uranium deposits
KW - High silicas
KW - Hydrothermal fluids
KW - Mineralisation
KW - Utah , USA
KW - Xenotime(y)
KW - Arsenic compounds
KW - arsenic
KW - hydrothermal fluid
KW - mineralization
KW - phosphorus
KW - rare earth element
KW - rhyolite
KW - thorium
KW - vanadate group
KW - United States
KW - Utah
U2 - 10.1180/mgm.2019.66
DO - 10.1180/mgm.2019.66
M3 - Journal article
VL - 84
SP - 109
EP - 116
JO - Mineralogical Magazine
JF - Mineralogical Magazine
SN - 0026-461X
IS - 1
ER -