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J. C. Hanco Zwaan

Observed names: J. C. (Hanco) Zwaan, J. C.(Hanco) Zwaan, J.C. (Hanco) Zwaan, J.C. Hanco Zwaan, J.C. Zwaan, J.C. ‘Hanco’ Zwaan, JOHANNES C. ZWAAN, Johannes C.(Hanco) Zwaan
OpenAlex ID: A5076404065
PIXE/PIGE characterisation of emeralds using an external micro-beam
2000 · T. Calligaro, J.-C. Dran, et al. · Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 61
Emeralds from the Kafubu Area, Zambia
2005 · J. C. (Hanco) Zwaan, Antonín V. Seifert, et al. · Gems & Gemology · 43
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Emeralds From the Fazenda Bonfim Region, Rio Grande do Norte, Brazil
2012 · J.C. (Hanco) Zwaan, Dorrit E. Jacob, et al. · Gems & Gemology · 40
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Gemmology, geology and origin of the Sandawana emerald deposits, Zimbabwe
2006 · J. C. Hanco Zwaan · Data Archiving and Networked Services (DANS) · 32
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Copper-bearing (Paraíba-type) Tourmaline from Mozambique
2008 · Brendan M. Laurs, J. C. (Hanco) Zwaan, et al. · Gems & Gemology · 30
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Update on Emeralds from the Sandawana Mines, Zimbabwe
1997 · J. C.(Hanco) Zwaan, Jan Kanis, et al. · Gems & Gemology · 24
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Alluvial Sapphires from Montana: Inclusions, Geochemistry, and Indications of a Metasomatic Origin
2016 · J.C. (Hanco) Zwaan, Eric Buter, et al. · Gems & Gemology · 23
Paleoecological Significance of Stable Isotope Ratios in Miocene Tropical Shallow Marine Habitats (indonesia)
2015 · SONJA REICH, VIOLA WARTER, et al. · Palaios · 12
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Tracing the emerald origin by oxygen isotope data: the case of Sandawana, Zimbabwe
2004 · Johannes C.(Hanco) Zwaan, Alain Cheilletz, et al. · Comptes Rendus Géoscience · 7
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Rhodochrosite Gems: Properties and Provenance
2018 · J. C. Hanco Zwaan, Regina Mertz-Kraus, et al. · Journal of gemmology/˜The œjournal of gemmology · 4
Topographical mineralogy of the Bamble sector, south Norway
1998 · T.G. Nijland, J. C. Hanco Zwaan, et al. · Data Archiving and Networked Services (DANS) · 4
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The Dr H.M.E. Schürmann collection : Precambrian and other crystalline rocks and minerals
1994 · J. C. Hanco Zwaan · The Digital Academic Repository of Naturalis Biodiversity Center (Naturalis Biodiversity Center) · 4
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An Unusual Black Natural Pearl from Mytilidae
2021 · J. C. Hanco Zwaan, Stefanos Karampelas · Journal of gemmology/˜The œjournal of gemmology · 3
Natural Pearls from Edible 'True Oysters' in Zeeland, The Netherlands
2014 · J. C. Hanco Zwaan, Peter Groenenboom · Journal of gemmology/˜The œjournal of gemmology · 3
A description and history of one of the largest nacreous pearls in the world
2009 · J. C. Hanco Zwaan, Herman A. Dommisse · Journal of gemmology/˜The œjournal of gemmology · 3
Demantoid Garnet from Antetezambato, Northern Madagascar—Internal Characteristics and Their Use in Deciphering Geographic Origin
2022 · J. C. Hanco Zwaan · Journal of gemmology/˜The œjournal of gemmology · 2
Diamonds from the Nassau Mountains, Suriname
2020 · Renoesha Naipal, J. C. Hanco Zwaan, et al. · Journal of gemmology/˜The œjournal of gemmology · 2
Emeralds in Greenstone belts: the case of Sandawana, Zimbabwe.
2000 · J. C. Hanco Zwaan, Jacques Touret · Data Archiving and Networked Services (DANS) · 2
Banjarmasin Diamond: War Booty from Borneo in Amsterdam
2023 · Suzanne van Leeuwen, J. C. Hanco Zwaan · Journal of gemmology/˜The œjournal of gemmology · 1
Colour-Change Garnet from Tanga, Tanzania
2020 · J. C. Hanco Zwaan · Journal of gemmology/˜The œjournal of gemmology · 1
Apatite from Durango, Mexico
2019 · J. C. Hanco Zwaan · Journal of gemmology/˜The œjournal of gemmology · 1
Behind the scenes at the Nationaal Natuurhistorisch Museum, Leiden, and the Teyler Museum, Haarlem, The Netherlands: report of a visit by the Geologists' Association, 30 November and 1 December, 2002
2003 · Stephen K. Donovan, Lars W. van den Hoek Ostende, et al. · Proceedings of the Geologists Association · 1
Update on Diamond Mining in the Martapura Area, South Kalimantan, Indonesia
2024 · Tay Thye Sun, J. C. Hanco Zwaan, et al. · Journal of gemmology/˜The œjournal of gemmology
Pargasite from Lajuar Madan, Badakhshan, Afghanistan
2021 · J. C. Hanco Zwaan, Maxwell C. Day, et al. · Journal of gemmology/˜The œjournal of gemmology
Imitations of Trapiche Ruby and Emerald
2020 · J. C. Hanco Zwaan · Journal of gemmology/˜The œjournal of gemmology
Works count: 34
Citation count: 303
H-index: 8
I10-index: 8
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