| 单词 | wash-dirt | 
| 释义 | wash-dirtn. Mining.   Auriferous soil or gravel to be submitted to washing. ΘΚΠ the world > the earth > minerals > mineral sources > 			[noun]		 > auriferous gravel alluvial1818 placer1829 gravel1849 washing-stuff1853 pay gravel1857 wash-gravel1860 wash-dirt1862 the world > the earth > minerals > ore > 			[noun]		 > suitable for washing wash-ore1653 wash-gravel1860 wash-dirt1862 washa1875 1862    Otago: Goldfields & Resources 20  				All the wash~dirt is auriferous. 1864    E. A. Murray Ella Norman III. 58  				Under the wash-dirt or stuff..there is always pipeclay. 1864    J. Rogers New Rush  ii. 30  				A bucket-full of wash-dirt tried—the best—Is of its value a sufficient test. 1877    R. W. Raymond Statistics Mines & Mining 43  				Large piles of wash-dirt are accumulated to be washed in the winter. 1890    Goldfields of Victoria 28  				Good tin can be obtained, mixed with a fair percentage of gold in the dish of washdirt. This entry has not yet been fully updated (first published 1923; most recently modified version published online December 2021). < | 
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