Desert rose is the colloquial name given to rosette formations of the minerals gypsum and barite with poikilotopic sand inclusions. Gypsum is a very soft Mineral composed of Calcium sulfate dihydrate with the Chemical formula Ca[[sulfur S]] O 4·2 Baryte ( Ba[[Sulfur S]] O 4 is a Mineral consisting of Barium sulfate. In mineralogy an inclusion is any material that is trapped inside a Mineral during its formation The 'petals' are crystals flattened on the c crystallographic axis, fanning open along characteristic gypsum cleavage planes. (See also: Crystallography)
The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. Crystallography is the experimental science of determining the arrangement of Atoms in Solids In older usage it is the scientific study of Crystals The In Mineralogy, shape and size give rise to descriptive terms applied to the typical appearance or habit of Crystals The many terms used by mineralogists Gypsum roses usually have better defined, sharper edges than barite roses.
The desert rose may also be known by the names:
Pictures of desert roses from Büdingen, Hesse, Germany
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