| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hard mica | Mining | Mica that, when slightly flexed or distorted with thumb pressure, generally does not show any tendency to delaminate. Such mica, in thick pieces, will give an almost metallic sound when tapped or dropped on a hard surface. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
