Mineral
Query URLs
https://term.museum-digital.de/md-de/tag/49
- Note
- In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.
The geological definition of mineral normally excludes compounds that occur only in living organisms. However, some minerals are often biogenic (such as calcite) or are organic compounds in the sense of chemistry (such as mellite). Moreover, living organisms often synthesize inorganic minerals (such as hydroxylapatite) that also occur in rocks.
The concept of mineral is distinct from rock, which is any bulk solid geologic material that is relatively homogeneous at a large enough scale. A rock may consist of one type of mineral, or may be an aggregate of two or more different types of minerals, spacially segregated into distinct phases.
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Epidot
Gut ausgebildete nadelförmige...
Object information
Image: Harzmuseum Wernigerode - CC BY-NC-SA -
Rauchquarz, Desmin, Epidot
Auffällig ist ein großer,...
Object information
Image: Harzmuseum Wernigerode - CC BY-NC-SA -
Graphitanflug auf Granitporphyr
Im Granitporphyr ist auf...
Object information
Image: Harzmuseum Wernigerode - CC BY-NC-SA -
Cerrusit
Auf dem umlagernden Gestein...
Object information
Image: Harzmuseum Wernigerode - CC BY-NC-SA
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