rock soap
noun
Mineralogy (now historical ) any of certain earthy clay minerals with a greasy texture, especially halloysite.
Origin
Early 19th century; earliest use found in Gazetteer of Scotland.
| 单词 | rock soap |
| 释义 | rock soapnoun Mineralogy (now historical ) any of certain earthy clay minerals with a greasy texture, especially halloysite. Origin |
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