Editorial for Special Issue "Colours in Minerals and Rocks".
- Resource Type
- Editorial
- Authors
- Casas, Lluís; Di Febo, Roberta
- Source
- Minerals (2075-163X). Apr2022, Vol. 12 Issue 4, pN.PAG-N.PAG. 4p.
- Subject
- *MINERALS
*COLOR space
*GARNET
*HEMATITE
*GEMS & precious stones
- Language
- ISSN
- 2075-163X
The colour-bearing elements can be essential to the mineral composition (idiochromatic minerals) or they can just play an occasional role as impurities (allochromatic minerals), along with other sporadic sources of colour, such as colour centres associated with structural defects. Colour is one of the most eye-catching properties of some minerals and rocks. Colour matching functions were used to calculate the colour parameters influencing garnet colour-changing under different light sources. The features that are extracted from the images were the colours (histograms of the colour coordinates of the pixels defined in a given colour space) and texture analyses operators. [Extracted from the article]