• 4146 Citations
  • 33 h-Index
1988 …2019
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Research Output 1988 2019

2019

Mineralogical and geochemical constraints on chromium oxidation induced by birnessite

Kong, K. P., Fischer, T. B., Heaney, P. J., Post, J. E., Stubbs, J. E. & Eng, P. J., Sep 2019, In : Applied Geochemistry. 108, 104365.

Research output: Contribution to journalArticle

birnessite
Chromium
chromium
oxidation
Oxidation
1 Citation (Scopus)

Phase transformations induced by solid solution

Heaney, P. J., Feb 26 2019, Transformation Processes in Minerals. De Gruyter Mouton, Vol. 39. p. 135-174 40 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

solid solution

Preface

Heaney, P. J., Feb 21 2019, Silica: Physical Behavior, Geochemistry, and Materials Applications. De Gruyter Mouton, Vol. 29. p. iii-v

Research output: Chapter in Book/Report/Conference proceedingForeword/postscript

Structural behavior of a stuffed derivative of α-quartz, Mg0.5AlSiO4, at high temperature: an in situ synchrotron XRD study

Xu, H., Lü, X., Heaney, P. J. & Ren, Y., Jul 1 2019, In : Physics and Chemistry of Minerals. 46, 7, p. 717-725 9 p.

Research output: Contribution to journalArticle

Quartz
Synchrotrons
X-ray diffraction
quartz
Derivatives
29 Citations (Scopus)

Structure and chemistry of the low-pressure silica polymorphs

Heaney, P. J., Feb 21 2019, Silica: Physical Behavior, Geochemistry, and Materials Applications. De Gruyter Mouton, Vol. 29. p. 1-40 40 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

tridymite
cristobalite
low pressure
silica
quartz
2018
2 Citations (Scopus)

Changes in the structure of birnessite during siderophore-promoted dissolution: A time-resolved synchrotron X-ray diffraction study

Fischer, T. B., Heaney, P. J. & Post, J. E., Jan 5 2018, In : Chemical Geology. 476, p. 46-58 13 p.

Research output: Contribution to journalArticle

birnessite
Siderophores
siderophore
Deferoxamine
Synchrotrons

Evolution in the structure of akaganeite and hematite during hydrothermal growth: An in situ synchrotron X-ray diffraction analysis

Peterson, K. M., Heaney, P. J. & Post, J. E., Dec 1 2018, In : Powder Diffraction. 33, 4, p. 287-297 11 p.

Research output: Contribution to journalArticle

Hematite
hematite
Synchrotrons
X ray diffraction analysis
synchrotrons

Iridescence in metamorphic "rainbow" hematite

Lin, X., Heaney, P. J. & Post, J. E., Mar 1 2018, In : Gems and Gemology. 54, 1, p. 28-39 12 p.

Research output: Contribution to journalArticle

hematite
rainbow
Nanorods
crystal
atomic force microscopy
6 Citations (Scopus)

The relationship between Mn oxidation state and structure in triclinic and hexagonal birnessites

Ling, F. T., Post, J. E., Heaney, P. J. & Ilton, E. S., Feb 20 2018, In : Chemical Geology. 479, p. 216-227 12 p.

Research output: Contribution to journalArticle

birnessite
oxidation
Oxidation
X ray absorption
Cations
2017
1 Citation (Scopus)

Causes of iridescence in natural quartz

Lin, X. & Heaney, P. J., Mar 1 2017, In : Gems and Gemology. 53, 1, p. 68-81 14 p.

Research output: Contribution to journalArticle

Quartz
transmission electron microscopy
atomic force microscopy
scanning electron microscopy
quartz

Defining minerals in the age of humans

Heaney, P. J., May 24 2017, In : American Mineralogist. 102, 5, p. 925-926 2 p.

Research output: Contribution to journalShort survey

Minerals
minerals
mineral
Anthropocene
11 Citations (Scopus)

Fourier-transform infrared spectroscopy (FTIR) analysis of triclinic and hexagonal birnessites

Ling, F. T., Post, J. E., Heaney, P. J., Kubicki, J. D. & Santelli, C. M., May 5 2017, In : Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 178, p. 32-46 15 p.

Research output: Contribution to journalArticle

Synchrotrons
Vacancies
Fourier transform infrared spectroscopy
infrared spectroscopy
Lattice vibrations
2016
4 Citations (Scopus)

A kinetic analysis of the transformation from akaganeite to hematite: An in situ time-resolved X-ray diffraction study

Peterson, K. M., Heaney, P. J. & Post, J. E., Dec 9 2016, In : Chemical Geology. 444, p. 27-36 10 p.

Research output: Contribution to journalArticle

akaganeite
hematite
nucleation
X-ray diffraction
Nucleation
7 Citations (Scopus)

Jianshuiite in oceanic manganese nodules at the Paleocene-Eocene boundary

Post, J. E., Thomas, E. & Heaney, P. J., Jan 1 2016, In : American Mineralogist. 101, 2, p. 407-414 8 p.

Research output: Contribution to journalArticle

Manganese nodules
Paleocene-Eocene boundary
manganese nodule
nodules
manganese
1 Citation (Scopus)
conference proceeding
public service
mineralogy
society
2 Citations (Scopus)

Time's arrow in the trees of life and minerals

Heaney, P. J., May 1 2016, In : American Mineralogist. 101, 5, p. 1027-1035 9 p.

Research output: Contribution to journalReview article

Minerals
minerals
taxonomy
Taxonomies
mineral
3 Citations (Scopus)

Uranium irradiation history of carbonado diamond; implications for Paleoarchean oxidation in the São Francisco craton

Magee, C. W., Teles, G., Vicenzi, E. P., Taylor, W. & Heaney, P., Jan 1 2016, In : Geology. 44, 7, p. 527-530 4 p.

Research output: Contribution to journalArticle

diamond
craton
uranium
irradiation
isotope
161 Citations (Scopus)

XPS determination of Mn oxidation states in Mn (hydr)oxides

Ilton, E. S., Post, J. E., Heaney, P. J., Ling, F. T. & Kerisit, S. N., Mar 15 2016, In : Applied Surface Science. 366, p. 475-485 11 p.

Research output: Contribution to journalArticle

Oxides
X ray photoelectron spectroscopy
Oxidation
Manganese oxide
Binding energy
2015
8 Citations (Scopus)

A refined monoclinic structure for a variety of "hydrohematite"

Peterson, K. M., Heaney, P. J., Post, J. E. & Eng, P. J., Feb 1 2015, In : American Mineralogist. 100, 2-3, p. 570-579 10 p.

Research output: Contribution to journalArticle

hematite
akaganeite
symmetry
X-ray diffraction
X ray diffraction
2 Citations (Scopus)

At the blurry edge of mineralogy

Heaney, P. J., Jan 1 2015, In : American Mineralogist. 100, 1, 1 p.

Research output: Contribution to journalArticle

Mineralogy
mineralogy
crystallinity
chemical property
physical property
2 Citations (Scopus)

MinKin: A kinetic modeling program for the precipitation, dissolution, and phase transformation of minerals in aqueous solution

Hummer, D. R. & Heaney, P. J., Jun 5 2015, In : Chemical Geology. 405, p. 112-122 11 p.

Research output: Contribution to journalArticle

Minerals
Dissolution
aqueous solution
Phase transitions
dissolution

Quartz

Heaney, P. J., Jan 1 2015, Encyclopedia of Earth Sciences Series. Springer Netherlands, p. 649-650 2 p. (Encyclopedia of Earth Sciences Series).

Research output: Chapter in Book/Report/Conference proceedingChapter

quartz
4 Citations (Scopus)

Synthesis and structure of a stuffed derivative of α-quartz, Mg0.5AlSiO4

Xu, H., Heaney, P. J., Yu, P. & Xu, H., Oct 1 2015, In : American Mineralogist. 100, 10, p. 2191-2198 8 p.

Research output: Contribution to journalArticle

Quartz
quartz
Derivatives
synthesis
nuclear magnetic resonance
12 Citations (Scopus)

Transformations from triclinic to hexagonal birnessite at circumneutral pH induced through pH control by common biological buffers

Ling, F. T., Heaney, P. J., Post, J. E. & Gao, X., Nov 27 2015, In : Chemical Geology. 416, p. 1-10 10 p.

Research output: Contribution to journalArticle

birnessite
Buffers
HEPES
Oxides
oxide
2014
6 Citations (Scopus)

Time-resolved synchrotron X-ray diffraction study of the dehydration behavior of chalcophanite

Post, J. E. & Heaney, P. J., Oct 1 2014, In : American Mineralogist. 99, 10, p. 1956-1961 6 p.

Research output: Contribution to journalArticle

chalcophanite
Synchrotrons
Dehydration
dehydration
synchrotrons
2013
11 Citations (Scopus)

A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite

Fleeger, C. R., Heaney, P. J. & Post, J. E., Apr 1 2013, In : American Mineralogist. 98, 4, p. 671-679 9 p.

Research output: Contribution to journalArticle

birnessite
Cations
ion exchange
X-ray diffraction
X ray diffraction
12 Citations (Scopus)

Single-site and monolayer surface hydration energy of anatase and rutile nanoparticles using density functional theory

Hummer, D. R., Kubicki, J. D., Kent, P. R. C. & Heaney, P. J., Dec 12 2013, In : Journal of Physical Chemistry C. 117, 49, p. 26084-26090 7 p.

Research output: Contribution to journalArticle

anatase
Hydration
rutile
Titanium dioxide
Density functional theory
2012
20 Citations (Scopus)
Crystallization
Synchrotrons
rutile
Titanium dioxide
synchrotrons
20 Citations (Scopus)

Molecular models of birnessite and related hydrated layered minerals

Cygan, R. T., Post, J. E., Heaney, P. J. & Kubicki, J. D., Aug 1 2012, In : American Mineralogist. 97, 8-9, p. 1505-1514 10 p.

Research output: Contribution to journalArticle

birnessite
Minerals
interlayers
minerals
Cations
1 Citation (Scopus)

Triple point: Celestine for state mineral! a sabbatical project

Heaney, P. J., Oct 1 2012, In : Elements. 8, 5, 1 p.

Research output: Contribution to journalComment/debate

celestine
Minerals
mineral
project
2011
17 Citations (Scopus)

A flow-through reaction cell that couples time-resolved X-ray diffraction with stable isotope analysis

Wall, A. J., Heaney, P. J., Mathur, R. D., Post, J. E., Hanson, J. C. & Eng, P. J., Apr 1 2011, In : Journal of Applied Crystallography. 44, 2, p. 429-432 4 p.

Research output: Contribution to journalArticle

X-Ray Diffraction
Isotopes
Dissolution
X ray diffraction
Ion Exchange
29 Citations (Scopus)

Cu isotope fractionation during bornite dissolution: An in situ X-ray diffraction analysis

Wall, A. J., Mathur, R., Post, J. E. & Heaney, P. J., Nov 1 2011, In : Ore Geology Reviews. 42, 1, p. 62-70 9 p.

Research output: Contribution to journalArticle

bornite
Fractionation
Isotopes
X ray diffraction analysis
Dissolution
16 Citations (Scopus)

Kinetic analysis of cation exchange in birnessite using time-resolved synchrotron X-ray diffraction

Lopano, C. L., Heaney, P. J., Bandstra, J. Z., Post, J. E. & Brantley, S. L., Jul 15 2011, In : Geochimica et Cosmochimica Acta. 75, 14, p. 3973-3981 9 p.

Research output: Contribution to journalArticle

birnessite
Synchrotrons
Cations
ion exchange
X-ray diffraction
4 Citations (Scopus)

Neutron diffraction study of hydrogen in birnessite structures

Post, J. E., Heaney, P. J. & Cho, Y., Apr 1 2011, In : American Mineralogist. 96, 4, p. 534-540 7 p.

Research output: Contribution to journalArticle

birnessite
neutron diffraction
Neutron diffraction
Hydrogen
interlayers
2010
1 Citation (Scopus)

A microstructural study of pietersite from Namibia and China

Hu, K. & Heaney, P., Dec 1 2010, In : Gems and Gemology. 46, 4, p. 280-286 7 p.

Research output: Contribution to journalArticle

Gems
X ray powder diffraction
Optical microscopy
Scanning electron microscopy
petrogenesis
43 Citations (Scopus)

Characterization of manganese oxide precipitates from Appalachian coal mine drainage treatment systems

Tan, H., Zhang, G., Heaney, P. J., Webb, S. M. & Burgos, W. D., Mar 1 2010, In : Applied Geochemistry. 25, 3, p. 389-399 11 p.

Research output: Contribution to journalArticle

mine drainage
Manganese oxide
manganese oxide
Coal mines
coal mine
132 Citations (Scopus)

Mineral weathering and elemental transport during hillslope evolution at the Susquehanna/Shale Hills Critical Zone Observatory

Jin, L., Ravella, R., Ketchum, B., Bierman, P. R., Heaney, P. J., White, T. S. & Brantley, S. L., Jul 1 2010, In : Geochimica et Cosmochimica Acta. 74, 13, p. 3669-3691 23 p.

Research output: Contribution to journalArticle

Observatories
Weathering
Shale
hillslope
Minerals
10 Citations (Scopus)

Uranyl phosphate sheet reconstruction during dehydration of metatorbernite [Cu(UO2)2(PO4)2·8H 2O]

Stubbs, J. E., Post, J. E., Elbert, D. C., Heaney, P. J. & Veblen, D. R., Aug 1 2010, In : American Mineralogist. 95, 8-9, p. 1132-1140 9 p.

Research output: Contribution to journalArticle

autunite
Hydrates
Dehydration
dehydration
phosphates
2009
33 Citations (Scopus)

Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved x-ray diffraction and transmission electron microscopy

Lopano, C. L., Heaney, P. J. & Post, J. E., May 1 2009, In : American Mineralogist. 94, 5-6, p. 816-826 11 p.

Research output: Contribution to journalArticle

birnessite
diffraction
transmission electron microscopy
x ray diffraction
Diffraction
54 Citations (Scopus)

Origin of nanoscale phase stability reversals in titanium oxide polymorphs

Hummer, D. R., Kubicki, J. D., Kent, P. R. C., Post, J. E. & Heaney, P. J., Mar 19 2009, In : Journal of Physical Chemistry C. 113, 11, p. 4240-4245 6 p.

Research output: Contribution to journalArticle

Phase stability
Titanium oxides
Polymorphism
titanium oxides
Nanoparticles
2008
4 Citations (Scopus)

Applications of time-resolved synchrotron X-ray diffraction to cation exchange, crystal growth and biomineralization reactions

Heaney, P. J., Post, J. E., Fischer, T. B., Hummer, D. R., Lopano, C. L. & Wall, A. J., Dec 11 2008, In : Mineralogical Magazine. 72, 1, p. 179-184 6 p.

Research output: Contribution to journalArticle

Biomineralization
biomineralization
Crystallization
Synchrotrons
Minerals
15 Citations (Scopus)

Continuous time-resolved X-ray diffraction of the biocatalyzed reduction of Mn oxide

Fischer, T. B., Heaney, P. J., Jang, J. H., Ross, D. E., Brantley, S. L., Post, J. E. & Tien, M., Nov 1 2008, In : American Mineralogist. 93, 11-12, p. 1929-1932 4 p.

Research output: Contribution to journalArticle

birnessite
rhodochrosite
Oxides
X-ray diffraction
oxide
11 Citations (Scopus)

Rietveld refinement of the ranciéite structure using synchrotron powder diffraction data

Post, J. E., Heaney, P. J. & Ertl, A., Mar 7 2008, In : Powder Diffraction. 23, 1, p. 10-14 5 p.

Research output: Contribution to journalArticle

Rietveld refinement
Synchrotrons
Vacancies
interlayers
synchrotrons

Structures and behaviors of CA-rich phyllomanganates and related phases

Post, J. E., Heaney, P. J., Johnson, E. A. & Cygan, R. T., Jan 1 2008, In : ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. 48, 2, p. 103-106 4 p.

Research output: Contribution to journalConference article

61 Citations (Scopus)

Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of palygorskite

Post, J. E. & Heaney, P. J., Apr 1 2008, In : American Mineralogist. 93, 4, p. 667-675 9 p.

Research output: Contribution to journalArticle

palygorskite
Synchrotrons
Dehydration
dehydration
X ray powder diffraction
2 Citations (Scopus)

Thermal expansion of anatase and rutile between 300 and 575 K using synchrotron powder X-ray diffraction (Powder Diffraction (2007) 22 (352-357))

Hummer, D. R., Heaney, P. J. & Post, J. E., Sep 8 2008, In : Powder Diffraction. 23, 3, 1 p.

Research output: Contribution to journalComment/debate

Synchrotrons
anatase
rutile
X ray powder diffraction
Titanium dioxide
20 Citations (Scopus)

Using phosphorescence as a fingerprint for the Hope and other blue diamonds

Eaton-Magaña, S., Post, J. E., Heaney, P. J., Freitas, J., Klein, P., Walters, R. & Butler, J. E., Jan 1 2008, In : Geology. 36, 1, p. 83-86 4 p.

Research output: Contribution to journalArticle

diamond
luminescence
gemstone
ultraviolet radiation
boron
2007
18 Citations (Scopus)

Anomalous behavior at the I2/a to Imab phase transition in SiO 2 -moganite: An analysis using hard-mode Raman spectroscopy

Heaney, P. J., McKeown, D. A. & Post, J. E., Apr 1 2007, In : American Mineralogist. 92, 4, p. 631-639 9 p.

Research output: Contribution to journalArticle

Quartz
Raman spectroscopy
phase transition
Silicon Dioxide
silica
21 Citations (Scopus)

Fluorescence spectra of colored diamonds using a rapid, mobile spectrometer

Eaton-Magaña, S., Post, J. E., Heaney, P. J., Walters, R. A., Breeding, C. M. & Butler, J. E., Jan 1 2007, In : Gems and Gemology. 43, 4, p. 332-351 20 p.

Research output: Contribution to journalArticle

Diamond
diamond
Spectrometers
spectrometer
fluorescence
58 Citations (Scopus)

Modeling the kinetics of silica nanocolloid formation and precipitation in geologically relevant aqueous solutions

Conrad, C. F., Icopini, G. A., Yasuhara, H., Bandstra, J. Z., Brantley, S. L. & Heaney, P. J., Feb 1 2007, In : Geochimica et Cosmochimica Acta. 71, 3, p. 531-542 12 p.

Research output: Contribution to journalArticle

Silicon Dioxide
aqueous solution
silica
kinetics
Kinetics