Feather alum
| (Min.) | a hydrous sulphate of alumina, resulting from volcanic action, and from the decomposition of iron pyrites; - called also halotrichite. |
See also: Feather
| 单词 | feather alum | ||
| 释义 | Feather alum
See also: Feather feather alumfeather alum[′feth·ər ‚al·əm] |
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