Desert rose
Query URLs
https://term.museum-digital.de/md-de/tag/1992
- Note
- A desert rose is an intricate rose-like formation of crystal clusters of gypsum or baryte, which include abundant sand grains. The "petals" are crystals flattened on the c axis, fanning open in radiating clusters.
The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. The crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom. Gypsum roses usually have better defined, sharper edges than baryte roses. Celestine and other bladed evaporite minerals may also form rosette clusters. They can appear either as a single rose-like bloom or as clusters of blooms, typically ranging from pea-sized to 10 centimetres (4 in) in diameter.
-
-
Baryt
Der Baryt ist ein häufig...
Object information
Image: Sammlungen der Universität Mainz - CC BY-NC-SA
References
[]