Articles | Volume 34, issue 1
Eur. J. Mineral., 34, 85–94, 2022
https://doi.org/10.5194/ejm-34-85-2022
Eur. J. Mineral., 34, 85–94, 2022
https://doi.org/10.5194/ejm-34-85-2022

Research article 01 Feb 2022

Research article | 01 Feb 2022

On an exceptional sample of wooden crystallographic models from the collection of minerals at the École des Mines de Saint-Étienne (France): description, history, digitalization, duplication

Jean Rieu et al.

Data sets

Sammlung von 416 Krystall-Modellen in Birnbaumholz P. Groth https://www.mineralogy.eu/archive/Krantz/Krantz_6b.pdf

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Short summary
The École des Mines de Saint-Étienne possesses an important collection of wooden crystallographic models. Rehabilitation action was undertaken. Several series of Krantz models were identified by the logos and linked to catalogs. An exceptional element was discovered: a polyhedron with 170 facets, from the cubic system. We report on the digitalization work, followed by a description of two duplication methods: 3D printing and precision lost-wax vacuum casting.