Mineral deposit (4)
'mineral deposit' is the definition.
(I know that Lode is a type of lode)
This is the entire clue.
(Other definitions for lode that I've seen before include "A deposit of ore, say gold" , "Vein of metallic ore sounds heavy" , "mine to some extent" , "Vein of metal ore in surrounding rocks" , "Deposit of valuable ore running through other rocks" .)
'mineral deposit' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ore that I've seen before include "Mineral-bearing material" , "Danish currency" , "Mineral-bearing rock" , "Natural material from which metals can be extracted" , "Deposit of mine" .)