noun
- a crystal that is half-turned or twinned, formed when two crystal individuals are joined along a plane in such a way that one appears to be rotated 180 degrees relative to the other
Usage: mineralogy; crystallography; technical
Examples
- The mineral specimen displayed a hemitrope structure, with the two crystal halves appearing to rotate around a central axis.
- Geologists identified the hemitrope by observing the 180-degree rotational relationship between the twin crystal faces.
- Under the microscope, the hemitrope showed the characteristic half-turned arrangement typical of certain mineral twins.