In-House ProjectConcept Development for Managing Objects Affected by Pyrite Decay
Concept Development for Managing Objects Affected by Pyrite Decay
01.08.2026
– 31.01.2027
Project description
Pyrite is a mineral found in numerous fossils within the collections of the Museum für Naturkunde Berlin. A critical issue is the mineral's instability: under the influence of humidity and temperature fluctuations, pyrite is prone to decay. This process often begins with the formation of grey-yellow crusts and, in advanced stages, leads to volume expansion that irreversibly destroys the fossil.
As the exact proportion of pyrite-containing objects in the paleontological collections is not yet fully quantified, urgent action is required. The project aims to systematically record the chemical degradation processes and assess their impact on the scientific usability of the objects.
A key driver for this project is the upcoming relocation of the collections to the new external depot in Adlershof. It is essential to establish a sound basis for decision-making prior to the move to prevent the loss of information and material during and after the relocation
Goals and Focus
The primary goal of the project is to develop a robust concept that guarantees the preservation and usability of the affected objects for future generations. The focus areas include:
- Assessment: Qualitative and quantitative recording of pyrite decay in a representative part of the collection (e.g., Mesozoic ammonites).
- Method Development: Testing and evaluating various preservation techniques (e.g., atmospheric isolation or chemical stabilization) regarding their effectiveness, sustainability, and resource efficiency.
- Workflow Optimization: Integrating conservation measures into existing collection management processes.
- Resource Planning: Creating the foundations for cost and material calculations (e.g., archival materials, chemicals, labor) to enable long-term funding of the measures.
Photo: Andreas Rassuly
Methodology and Outlook
The project employs a scientifically supervised approach, testing the transferability of research findings to other collection areas. The results of the investigations will not only be documented internally within the department but also presented in specialist lectures and workshops (e.g., Basic Collection Techniques).
By developing standardized, data-driven workflows, the project makes a significant contribution to the Museum's strategy of permanently preserving global natural heritage through preventive conservation.
