| Inclusions are inside the crystal enclosed foreign materials like liquids, gases, hydrocarbons (oil, asphalt), sediment, NaCl, as well as other minerals or crystals. Inclusions can be a sort of fingerprint of the place of dicovery. Thus inclusions show us under which geologic conditions minerals had ... moreInclusions are inside the crystal enclosed foreign materials like liquids, gases, hydrocarbons (oil, asphalt), sediment, NaCl, as well as other minerals or crystals. Inclusions can be a sort of fingerprint of the place of dicovery. Thus inclusions show us under which geologic conditions minerals had formed. This allows conclusions on the place of discovery. The article deals with the different kinds of inclusions, her conditions of build, which minerals do often have inclusions and how they appear. (Full text in german) |
| The study of twins starts due to the very first beginnings of crystallography as a science. Not negligible for this reason, the idea or the concept of a twin crystal are often associated with a macroscopic building. Modern studies at the nano scale have shown that the formation of twins can occur at ... moreThe study of twins starts due to the very first beginnings of crystallography as a science. Not negligible for this reason, the idea or the concept of a twin crystal are often associated with a macroscopic building. Modern studies at the nano scale have shown that the formation of twins can occur at a very early stage of crystal growing. Based on these findings, it does beg the request to reconsider the formation mechanisms, and adjacency to the newly different categories. (Text in german) |
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