| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hair salt | Chemistry | Mineral that consists of native Epsom salts, and occurs in colorless prismatic crystals, botryoidal masses, incrustations in gypsum or limestone caves, or in solution in mineral waters. Source: European Union. (references) | |
| Hair salt | Mining | Common name for efflorescences of hairlike, acicular, or fibrous crystals of epsomite or other hydrous sulfates in caves and old mine workings. See also: alunogen. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
