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Journal Article

Influence of Mn (super 2+) and pH on the formation of iron oxides from ferrous chloride and ferrous sulfate solutions Available to Purchase

G. S. R. Krishnamurti, P. M. Huang
Published: 01 October 1989
Clays and Clay Minerals (1989) 37 (5): 451–458.
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Journal Article

Ferric vs. ferrous arsenate amorphous precursors: Properties and controls on scorodite mineralization Available to Purchase

Pei Chang, Xiangyu Zhu, Hongming Cai, Jianchao Zhang, Siliang Li, Xiancai Lu, Rucheng Wang, Hui Henry Teng
Published: 01 April 2025
American Mineralogist (2025) 110 (4): 537–546.
DOI: https://doi.org/10.2138/am-2024-9326
... III in the present study). Here, we intend to characterize another phase, amorphous ferrous arsenate (AFe II ), which is formed in partially oxidized Fe(II)-As(V) systems, and carry out a comparative study on the properties and related scorodite mineralization processes relative to those of AFe III...
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Journal Article

Solid solution of CaSiO 3 and MgSiO 3 perovskites in the lower mantle: The role of ferrous iron Available to Purchase

Feiwu Zhang, Tingting Xiao, Joshua M.R. Muir
Published: 01 March 2023
American Mineralogist (2023) 108 (3): 439–446.
DOI: https://doi.org/10.2138/am-2022-8356
... functional theory (DFT), ferrous iron’s influence on the reciprocal solubility of MgSiO 3 and CaSiO 3 perovskite (forming a single Ca-Mg mixed perovskite phase) was calculated under pressures and temperatures of 25–125 GPa and 0–3000 K, respectively. Except at iron-rich conditions, ferrous iron...
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View PDF for article title, Solid solution of CaSiO 3 and MgSiO 3 perovskites in the lower mantle: The role of <span class="search-highlight">ferrous</span> iron
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Journal Article

Ferrous hydroxychlorides hibbingite [γ-Fe 2 (OH) 3 Cl] and parahibbingite [β-Fe 2 (OH) 3 Cl] as a concealed sink of Cl and H 2 O in ultrabasic and granitic systems Available to Purchase

Peter Koděra, Juraj Majzlan, Kilian Pollok, Stefan Kiefer, František Šimko, Eva Scholtzová, Jarmila Luptáková, Grant Cawthorn
Published: 01 May 2022
American Mineralogist (2022) 107 (5): 826–841.
DOI: https://doi.org/10.2138/am-2022-8011
...Peter Koděra; Juraj Majzlan; Kilian Pollok; Stefan Kiefer; František Šimko; Eva Scholtzová; Jarmila Luptáková; Grant Cawthorn Abstract Ferrous hydroxychlorides are geochemically important but less recognized mineral species due to their extreme sensitivity to oxidation and hydration in contact...
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View PDF for article title, <span class="search-highlight">Ferrous</span> hydroxychlorides hibbingite [γ-Fe 2 (OH) 3 Cl] and parahibbingite [β-Fe 2 (OH) 3 Cl] as a concealed sink of Cl and H 2 O in ultrabasic and granitic systems
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Journal Article

Meifuite, A New Ferrous Phyllosilicate Mineral With Modulated Tetrahedral Sheets Similar to Minnesotaite Available to Purchase

Shiyun Jin, Xiaochun Li, Franklin Hobbs, Stephen Guggenheim, And Huifang Xu
Published: 01 December 2021
Clays and Clay Minerals (2021) 69 (6): 672–687.
DOI: https://doi.org/10.1007/s42860-021-00143-8
...Shiyun Jin; Xiaochun Li; Franklin Hobbs; Stephen Guggenheim; And Huifang Xu Abstract A new ferrous phyllosilicate, meifuite, has been discovered in the Yinachang Fe-Cu-REE (rare-earth element) deposit in China. The structural formula, calculated using averaged electron probe microanalysis (EPMA...
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Journal Article

Ferric-ferrous iron ratios of experimental majoritic garnet and clinopyroxene as a function of oxygen fugacity Available to Purchase

Laura J.A. Rzehak, Arno Rohrbach, Christian Vollmer, Heidi E. Höfer, Jasper Berndt, Stephan Klemme
Published: 01 December 2020
American Mineralogist (2020) 105 (12): 1866–1874.
DOI: https://doi.org/10.2138/am-2020-7265
... procedures described by van Aken and Liebscher (2002) . The first approach applies two 2 eV wide integration windows to the Fe L 3 maximum (Fe 3+ ) and the Fe L 2 maximum (Fe 2+ ) of the sample. By dividing the ferrous iron content at L 2 by the ferric iron content at L 3 the Fe 3+ /ΣFe content...
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Journal Article

Workshop cum Training on Geology and Exploration of the Ferrous Group of Minerals in Precambrian Milieu of Odisha Free

B. M. Faruque
Published: 01 May 2019
Jour. Geol. Soc. India (2019) 93 (5): 624.
DOI: https://doi.org/10.1007/s12594-019-1225-6
... in exploration and exploitation of ferrous group minerals in the state. The five day workshop cum training on “Geology and Exploration of the Ferrous Group of Minerals in Precambrian Milieu of Odisha”, sponsored by NMDC was conducted during 6 th to 10 th March, 2019 with trainees from NMDC, Tata Steel, Rungta...
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Journal Article

Rates and styles of planetary cooling on Earth, Moon, Mars, and Vesta, using new models for oxygen fugacity, ferric-ferrous ratios, olivine-liquid Fe-Mg exchange, and mantle potential temperature Available to Purchase

Keith Putirka
Published: 01 April 2016
American Mineralogist (2016) 101 (4): 819–840.
DOI: https://doi.org/10.2138/am-2016-5402
... exhibit volcanism that is uni-modal with T p , since mantle plumes would have a monopoly on the genesis of volcanism. But new studies of magmatic ferric-ferrous ratios ( X liq Fe2O3 / X liq FeO ) ( Cottrell and Kelley 2011 ) and the olivine-liquid Fe-Mg exchange coefficient, K D (Fe-Mg) Ol-liq (or K D...
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View PDF for article title, Rates and styles of planetary cooling on Earth, Moon, Mars, and Vesta, using new models for oxygen fugacity, ferric-<span class="search-highlight">ferrous</span> ratios, olivine-liquid Fe-Mg exchange, and mantle potential temperature
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Journal Article

The footprints of ancient CO 2 -driven flow systems: Ferrous carbonate concretions below bleached sandstone Open Access

David B. Loope, Richard M. Kettler
Journal: Geosphere
Published: 01 June 2015
Geosphere (2015) 11 (3): 943–957.
DOI: https://doi.org/10.1130/GES01094.1
... the released ferrous iron and the methane downward. Carbonates precipitated when the descending, reducing water degassed along fractures. The distribution of a broad array of iron-rich features made recognition of the extent of the ancient flow systems possible. Although siderite is not preserved, dense...
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Book Chapter

Non-Ferrous Mineralization Associated with the Wawa-Abitibi Terrane and Duluth Complex Cu-Ni-PGM Deposits, Northeastern Minnesota Available to Purchase

Author(s)
G.J. Hudak, D. Peterson
Book: Non-Ferrous Mineralization Associated with the Wawa-Abitibi Terrane and Duluth Complex Cu-Ni-PGM
Series: Society of Economic Geologists Guidebook Series
Publisher: Society of Economic Geologists
Published: 01 January 2014
EISBN: 978-1-629494-84-5
Abstract
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The field trip guide for this three-day trip is divided into two parts. Part 1 comprises field trip stops that occur withinthe Neoarchean Wawa-Abitibi Terrane rocks that comprise the Vermilion District of northeastern Minnesota. Part 2 comprises field trip stops associated with both outcrop and diamond drill core investigations of lithologies and mineralization associated with Minnesota’s extensive Cu-Ni-PGM deposits.

Book

Non-Ferrous Mineralization Associated with the Wawa-Abitibi Terrane and Duluth Complex Cu-Ni-PGM

Author(s)
G.J. Hudak, D. Peterson
Series: Society of Economic Geologists Guidebook Series
Publisher: Society of Economic Geologists
Published: 01 January 2014
DOI: 10.5382/GB.47
EISBN: 978-1-629494-84-5
Abstract
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The field trip guide for this three-day trip is divided into two parts. Part 1 comprises field trip stops that occur withinthe Neoarchean Wawa-Abitibi Terrane rocks that comprise the Vermilion District of northeastern Minnesota. Part 2 comprises field trip stops associated with both outcrop and diamond drill core investigations of lithologies and mineralization associated with Minnesota’s extensive Cu-Ni-PGM deposits.

Journal Article

Electronic spin states of ferric and ferrous iron in the lower-mantle silicate perovskite Available to Purchase

Jung-Fu Lin, Ercan E. Alp, Zhu Mao, Toru Inoue, Catherine McCammon, Yuming Xiao, Paul Chow, Jiyong Zhao
Published: 01 April 2012
American Mineralogist (2012) 97 (4): 592–597.
DOI: https://doi.org/10.2138/am.2012.4000
.... Blaha P. Cococcioni M. Wentzcovitch R.M. ( 2011 ) Spin-state crossover and hyperfine interactions of ferric iron in MgSiO 3 perovskite . Physical Review Letters , 106 , 118501 . Huggins F.E. ( 1975 ) The 3 d levels of ferrous ions in silicate garnets . American...
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Journal Article

Implications of ferrous and ferric iron in antigorite Available to Purchase

Bernard W. Evans, M. Darby Dyar, Scott M. Kuehner
Published: 01 January 2012
American Mineralogist (2012) 97 (1): 184–196.
DOI: https://doi.org/10.2138/am.2012.3926
...-free fraction because the appropriate parameters are not known. * E-mail: [email protected] Manuscript handled by Warren Huff 28 6 2011 04 10 2011 © 2012 Mineralogical Society of America 2012 Antigorite Mössbauer spectroscopy microprobe ferrous/ferric ratios...
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Journal Article

The effect of silica on ferric/ferrous ratio in silicate melts: An experimental study using Mössbauer spectroscopy Available to Purchase

Alexander Borisov, Catherine McCammon
Published: 01 April 2010
American Mineralogist (2010) 95 (4): 545–555.
DOI: https://doi.org/10.2138/am.2010.3217
... , depending on temperature. It was also demonstrated that the temperature dependence of the ferric/ferrous ratio [log(Fe 3+ /Fe 2+ ) vs. 1/T] is essentially similar for basic and silicic melts. * E-mail: [email protected] 25 10 2009 12 02 2009 © 2010 American Mineralogist 2010...
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Journal Article

THE INCORPORATION OF CADMIUM, MANGANESE AND FERROUS IRON IN SPHALERITE: INSIGHTS FROM COMPUTER SIMULATIONS Available to Purchase

Kate Wright
Published: 01 June 2009
The Canadian Mineralogist (2009) 47 (3): 615–623.
DOI: https://doi.org/10.3749/canmin.47.3.615
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Journal Article

Mapping marine ferrous targets using real-time 3D analytic signal data Available to Purchase

Doug Hrvoic, Matthew R. Pozza
Journal: The Leading Edge
Published: 01 January 2006
The Leading Edge (2006) 25 (1): 54–56.
DOI: https://doi.org/10.1190/1.2164756
... immunity to the effects of diurnal variation, make it an ideal data form when searching for ferrous objects such as pipelines, unexploded ordnance (UXO), mines, or archaeological remains. Corresponding author: [email protected] Copyright © 2006 Society of Exploration Geophysicists 2006...
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Journal Article

Ferrous hydroxy carbonate is a stable transformation product of biogenic magnetite Available to Purchase

Ravi K. Kukkadapu, John M. Zachara, James K. Fredrickson, David W. Kennedy, Alice C. Dohnalkova, David E. Mccready
Published: 01 February 2005
American Mineralogist (2005) 90 (2-3): 510–515.
DOI: https://doi.org/10.2138/am.2005.1727
... (~10 nm), cation-excess (CE) magnetite with an Fe 2+ /Fe TOT ratio of 0.5–0.6 was the sole biogenic product after one day of incubation. The CE magnetite was unstable and partially transformed to micrometer-sized ferrous hydroxy carbonate [FHC; Fe 2 (OH) 2 CO 3(s) ], a rosasite-type mineral, with time...
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Journal Article

Ferrous saponite from the Deccan Trap, India, and its application in adsorption and reduction of hexavalent chromium Available to Purchase

G. Parthasarathy, B.M. Choudary, B. Sreedhar, A.C. Kunwar, R. Srinivasan
Published: 01 November 2003
American Mineralogist (2003) 88 (11-12): 1983–1988.
DOI: https://doi.org/10.2138/am-2003-11-1242
... composition (Na 0.60 K 0.04 Ca 0.47 )(Mg 2.05 Fe 2+ 3.95 )(Si 6.45 Al 1.55 )O 20 (OH) 4 . The XRD data of the Killari sample with d (001) = 1.70 nm and b 0 = 0.9275(2) nm conform to that of ferrous saponite. The FTIR spectra show vibrational bands typical of trioctahedral smectites. Differential thermal...
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Journal Article

An FTIR study of tetrahedrally coordinated ferrous iron in the spinel-hercynite solid solution Available to Purchase

Henrik Skogby, Ulf Hålenius
Published: 01 April 2003
American Mineralogist (2003) 88 (4): 489–492.
DOI: https://doi.org/10.2138/am-2003-0402
... 571 578 552 565 566 586 (35) A 4 (10 6 cm −2 ) ‡ 0.291 0.274 0.217 0.206 0.189 0.150 0.113 0.082 0.037 0.015 A SUM (10 6 cm −2 ) ‡ 3.155 3.218 2.623 2.302 2.092 1.510 1.404 0.834 0.393 0.151 The optical absorption spectra of ferrous and ferric...
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Journal Article

Effect of the presence of bacterial surfaces during the synthesis of Fe oxides by oxidation of ferrous ions Available to Purchase

Xavier CHÂTELLIER, Danielle FORTIN, Marcia M. WEST, Gary G. LEPPARD, F. Grant FERRIS
Published: 01 July 2001
European Journal of Mineralogy (2001) 13 (4): 705–714.
DOI: https://doi.org/10.1127/0935-1221/2001/0013-0705
... on their negatively charged surfaces, where positive ferrous ions can adsorb and may be oxidized ( Fortin et al. , 1997 ). In this process, the oxygen atoms of the organic molecules present on the bacterial surfaces are thought to provide the nucleation sites for the octahedral units of the crystals ( Archibald...
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