Geology and Mining. A deposit of a metallic ore, crystalline mineral, or other distinct material filling an extended continuous crack or fissure…
| 单词 | θ6344 | 
| 释义 | the world > the earth > minerals > mineral deposits > 			[noun]		 > vein (62)		 veina1387 Geology and Mining. A deposit of a metallic ore, crystalline mineral, or other distinct material filling an extended continuous crack or fissure… vein1601 An ore (cf. mine, n. 2a). Obsolete. leader1855 Mining. A small and insignificant vein, which leads to or indicates the proximity of a larger and better. manta1874 A vein, seam, or lode; a mineral placer. Subcategories:— 			principal			(4)		 — 			thin			(9)		 — 			branching			(4)		 — 			crossing			(3)		 — 			curving			(3)		 — 			perpendicular			(2)		 — 			step- or fault-vein			(2)		 — 			lower vein			(1)		 — 			edge or side			(2)		 — 			join or intersection			(3)		 — 			solid part			(1)		 — 			vein of ore			(18)		 — 			direction of			(2)		 — 			thickness or depth of			(1)		 — 			parts of specific shape			(1)		 — 			loose fragments on surface above			(1)		 — 			sudden disappearance of			(1)		 | 
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