J. C. Hanco Zwaan

PIXE/PIGE characterisation of emeralds using an external micro-beam

Thomas Calligaro, J.-C. Dran, J.-P. Poirot et al. · Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 2000 · 61 citations

X-ray Crystallography, Physics, Microscopy +8

Emeralds from the Kafubu Area, Zambia

J. C. Hanco Zwaan, Antonín V. Seifert, S. Vrána et al. · Gems & Gemology · 2005 · 41 citations · Full text

Emeralds From the Fazenda Bonfim Region, Rio Grande do Norte, Brazil

J. C. Hanco Zwaan, Dorrit E. Jacob, Tobias Häger et al. · Gems & Gemology · 2012 · 37 citations · Full text

Engineering, Rio Grande, Emerald Mineralization +17

Copper-bearing (Paraíba-type) Tourmaline from Mozambique

Brendan M. Laurs, J. C. Hanco Zwaan, Christopher M. Breeding et al. · Gems & Gemology · 2008 · 28 citations · Full text

Update on Emeralds from the Sandawana Mines, Zimbabwe

J. C. Hanco Zwaan, Jan Kanis, Eckehard J. Petsch · Gems & Gemology · 1997 · 24 citations · Full text

Mining Science, Engineering, Sandawana Mines +7