The most common and most likely answer to this crossword clue is the 4 letter word LODE
L
O
D
E
More clues leading to the result LODE
- Large poem is a rich source
- Learner given literary work that’s a rich source of material
- Vein running through Tiepolo design
- In report, responsibility is mine to some extent
- Endlessly yodels about mineral deposit
- Deposit burden in the sound
- Audited tax deposit worth a lot
- Some ore? A good deal, by the sound of it
Buddy explains!

The straight part
We know that "Deposit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case deposit = lode.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does LODE mean?
LODE noun- A way or path; a road.
- A watercourse.
- A vein of metallic ore that lies within definite boundaries, or within a fissure.
- (by extension) A rich source of supply.