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| Zwaan, J.C.. |
| The Dr H.M.E. Schürmann collection is stored at the National Museum of Natural History in Leiden, The Netherlands. It mainly consists of Precambrian rocks, but also includes other crystalline rocks and minerals, which were collected from all over the world. In order to provide a quick reference to localities of interest, an overview of the most important geographical locations is given. During his life and particularly after his retirement, Schürmann spent much of his time studying the Precambrian in North Africa. As a result, he gathered an extensive and well-documented collection of Precambrian rocks and minerals from Egypt and an irreplaceable collection of Precambrian rocks from drill-cores of deep wells situated in Libya. Both collections are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.29. |
| Ano: 1994 |
URL: http://www.repository.naturalis.nl/record/317408 |
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| Kriegsman, L.M.. |
| Petrological collections result from sampling for academic research, for aesthetic or commercial reasons, and to document natural diversity. Selection criteria for reducing and enhancing collections include adequate documentation, potential for future use, information density, time and money invested in specimens, and spatial and financial constraints. Application of these criteria to the voluminous (c. 300,000 samples) rock collections of the University of Amsterdam, led to partial acquisition by the Nationaal Natuurhistorisch Museum in Leiden (Naturalis) late in 2002. Selected items included: (i) historical collections; (ii) material from former overseas domains; (iii) material from poorly accessible areas; (iv) material useful for research at the museum... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.29. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/317305 |
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