Rich vein (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rich vein</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for seam that I've seen before include "Underground layer of mineral" , "Unfasten" , "The line where two edges are stitched together" , "Joint between two edges" , "Stratum (of a mineral)" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rich vein</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lode that I've seen before include "Deposit of valuable ore found in surrounding rocks" , "Rich source" , "A deposit of ore, say gold" , "Vein of metallic ore sounds heavy" , "Mineral vein" .)