The phenomenon due to which a mineral shows rainbow colours is?
A. Idiochromatism
B. Allochromatism
C. Iridescence
D. Pseudochromatism
Answer:C
The phenomenon due to which a mineral shows rainbow colours is?
A. Idiochromatism B. Allochromatism C. Iridescence D. Pseudochromatism
Explanation: Some minerals may show rainbow colours either in their interior or on the exterior surface. This is called iridescence.