Meaning of mountain soap | Babel Free

Definitions

A soft earthy mineral, of a brownish colour, which has a greasy or soapy feel and is used as a filler in crayons.

obsolete, possibly, uncountable

Examples

“It soils either strongly, as chalk and mountain soap; or slightly, as molybdana, lead glauce, and graphite. Besides this, there are three other distinctions connected with this character to be attended to.”

“[…] seven different minerals possessing the same formula, namely, fahlunite, esmarkite, pyrargillite, bole, iron lithomarge, halloylite from La Vouth and from Thiviers, and mountain soap from Thuringia.”

“Sometimes, after removing the coating of calcspar from the crystals, they appear to be covered with a mass resembling steinmark or mountain soap. The compact and crystalline hornblende occurs almost everywhere as a constituent of the[…]”

CEFR level