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Jan CempÍrek
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Journal Article

Physical properties and crystal structure of near end-member oxy-dravite from the Beluga occurrence, Nunavut territory, Canada

Lenka Skřápková, Jan Cempírek, Philippe M. Belley, Lee A. Groat, Radek Škoda
Published: 07 August 2023
Mineralogical Magazine (2023) 87 (5): 719–730.
DOI: https://doi.org/10.1180/mgm.2023.59
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Predicting the Crystal Structure of Beryl from the Chemical Composition

Rhiana E. Henry, Lee A. Groat, Jan Cempírek, Radek Škoda, Markéta Holá
Published: 29 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (4): 873–897.
DOI: https://doi.org/10.3749/2200034
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The position of vanadium in the crystal structure of zoisite, variety tanzanite: Structural refinement, optical absorption spectroscopy and bond-valence calculations

Peter Bačík, Manfred Wildner, Jan Cempírek, Radek Škoda, Peter Cibula, Tomáš Vaculovič
Published: 29 June 2023
Mineralogical Magazine (2023) 87 (4): 599–610.
DOI: https://doi.org/10.1180/mgm.2023.48
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Crystal-Chemical Observations and the Relation Between Sodium and H 2 O in Different Beryl Varieties

Rhiana E. Henry, Lee A. Groat, R. James Evans, Jan Cempírek, Radek Škoda
Published: 19 August 2022
The Canadian Mineralogist (2022) 60 (4): 625–675.
DOI: https://doi.org/10.3749/canmin.2100050
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Uvite, CaMg 3 (Al 5 Mg)(Si 6 O 18 )(BO 3 ) 3 (OH) 3 (OH), a new, but long-anticipated mineral species of the tourmaline supergroup from San Piero in Campo, Elba Island, Italy

Ferdinando Bosi, Cristian Biagioni, Federico Pezzotta, Henrik Skogby, Ulf Hålenius, Jan Cempírek, Frank C. Hawthorne, Aaron J. Lussier, Yassir A. Abdu, Maxwell C. Day, Mostafa Fayek, Christine M. Clark, Joel D. Grice, Darrell J. Henry
Published: 31 May 2022
Mineralogical Magazine (2022) 86 (5): 767–776.
DOI: https://doi.org/10.1180/mgm.2022.54
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Princivalleite, Na(Mn 2 Al)Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new mineral species of the tourmaline supergroup from Veddasca Valley, Varese, Italy

Ferdinando Bosi, Federico Pezzotta, Henrik Skogby, Alessandra Altieri, Ulf Hålenius, Gioacchino Tempesta, Jan Cempírek
Published: 14 January 2022
Mineralogical Magazine (2022) 86 (1): 78–86.
DOI: https://doi.org/10.1180/mgm.2022.3
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Celleriite, ☐( Mn 2 2 + Al)Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 (OH), a new mineral species of the tourmaline supergroup

Ferdinando Bosi, Federico Pezzotta, Alessandra Altieri, Giovanni B. Andreozzi, Paolo Ballirano, Gioacchino Tempesta, Jan Cempírek, Radek Škoda, Jan Filip, Renata Čopjaková, Milan Novák, Anthony R. Kampf, Emily D. Scribner, Lee A. Groat, R. James Evans
Published: 03 January 2022
American Mineralogist (2022) 107 (1): 31–42.
DOI: https://doi.org/10.2138/am-2021-7818
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Telluride Mineralogy of the Deer Horn Au-Ag-Te-(Bi-Pb-W) Deposit, British Columbia: Implications for the Generation of Tellurides

Jordan A. Roberts, Lee A. Groat, Paul G. Spry, Jan Cempírek
Published: 24 June 2021
The Canadian Mineralogist (2022) 60 (6): 989–1011.
DOI: https://doi.org/10.3749/canmin.1900103
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Magnesio-lucchesiite, CaMg 3 Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new species of the tourmaline supergroup

Emily D. Scribner, Jan Cempírek, Lee A. Groat, R. James Evans, Cristian Biagioni, Ferdinando Bosi, Andrea Dini, Ulf Hålenius, Paolo Orlandi, Marco Pasero
Published: 01 June 2021
American Mineralogist (2021) 106 (6): 862–871.
DOI: https://doi.org/10.2138/am-2021-7496
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A Crystallographically Supported Equation for Calculating Water in Emerald from the Sodium Content

Rhiana E. Henry, Lee A. Groat, R. James Evans, Jan Cempírek, Radek Škoda
Published: 01 April 2021
The Canadian Mineralogist (2021) 59 (2): 337–354.
DOI: https://doi.org/10.3749/canmin.2000076
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Secondary beryl in cordierite/sekaninaite pseudomorphs from granitic pegmatites – A monitor of elevated content of beryllium in the precursor

Petr Gadas, Milan Novák, Michaela Vašinová Galiová, Adam Szuszkiewicz, Adam Pieczka, Jakub Haifler, Jan Cempírek
Published: 21 December 2020
The Canadian Mineralogist (2020) 58 (6): 785–802.
DOI: https://doi.org/10.3749/canmin.2000014
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Titanium in tourmalines from granitic pegmatites and their exocontacts

Petr Gadas, Milan Novák, Radek Škoda, Jan Cempírek, Adam Zachař, Tomáš Flégr, Federico Pezzotta
Published: 30 September 2019
The Canadian Mineralogist (2019) 57 (5): 745–747.
DOI: https://doi.org/10.3749/canmin.AB00011
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The crystal chemistry of the sakhaite–harkerite solid solution

R. James Evans, Lee A. Groat, Jan Cempírek, Radek Škoda, Edward S. Grew, Cyrielle Bernard
Published: 01 November 2018
American Mineralogist (2018) 103 (11): 1749–1760.
DOI: https://doi.org/10.2138/am-2018-6563
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Geochemistry and Secondary Alterations of Microlite from Eluvial Deposits in the Numbi Mining Area, South Kivu, Democratic Republic of the Congo

Jan Loun, Milan Novák, Jan Cempírek, Radek Škoda, Michaela Vašinová Galiová, Lubomír Prokeš, Marek Dosbaba, Renata Čopjaková
Published: 31 March 2018
The Canadian Mineralogist (2018) 56 (2): 203–220.
DOI: https://doi.org/10.3749/canmin.1700091
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Tourmaline 2017

Barb Dutrow, Vincent van Hinsberg, Jan Cempírek, Klaus-Dieter Grevel
Journal: Elements
Published: 01 August 2017
Elements (2017) 13 (4): 284.
DOI: https://doi.org/10.2138/gselements.13.4.284
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Genesis of Emerald-bearing Quartz Veins Associated with the Lened W-skarn Mineralization, Northwest Territories, Canada

Donald J. Lake, Lee A. Groat, Hendrik Falck, Thomas Mulja, Jan CempÍrek, Daniel Kontak, Daniel Marshall, Gaston Giuliani, Mostafa Fayek
Published: 01 July 2017
The Canadian Mineralogist (2017) 55 (4): 561–593.
DOI: https://doi.org/10.3749/canmin.1700025
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Origin of Scapolite-hosted Sapphire (corundum) Near Kimmirut, Baffin Island, Nunavut, Canada

Philippe M. Belley, Tashia J. Dzikowski, Andrew Fagan, Jan CempÍrek, Lee A. Groat, James K. Mortensen, Mostafa Fayek, Gaston Giuliani, Anthony E. Fallick, Paul Gertzbein
Published: 01 July 2017
The Canadian Mineralogist (2017) 55 (4): 669–699.
DOI: https://doi.org/10.3749/canmin.1700018
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Mineralogy of the Ash Mountain Sn-bearing Skarn, Tuya Range, Northern British Columbia, Canada

Emily D. Scribner, Lee A. Groat, Jan CempÍrek
Published: 01 March 2017
The Canadian Mineralogist (2017) 55 (2): 333–347.
DOI: https://doi.org/10.3749/canmin.1600064
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Lucchesiite, CaFe 2+ 3 Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new mineral species of the tourmaline supergroup

Ferdinando Bosi, Henrik Skogby, Marco E. Ciriotti, Petr Gadas, Milan Novák, Jan Cempírek, Dalibor Všianský, Jan Filip
Published: 01 February 2017
Mineralogical Magazine (2017) 81 (1): 1–14.
DOI: https://doi.org/10.1180/minmag.2016.080.067
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Vránaite, ideally Al 16 B 4 Si 4 O 38 , a new mineral related to boralsilite, Al 16 B 6 Si 2 O 37 , from the Manjaka pegmatite, Sahatany Valley, Madagascar

Jan Cempírek, Edward S. Grew, Anthony R. Kampf, Chi Ma, Milan Novák, Petr Gadas, Radek Škoda, Michaela Vašinová-Galiová, Federico Pezzotta, Lee A. Groat, Sergey V. Krivovichev
Published: 01 September 2016
American Mineralogist (2016) 101 (9): 2108–2117.
DOI: https://doi.org/10.2138/am-2016-5686
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