Related Clues:
- Valuable ore deposit
- Mother ___ (forty-niner's dream)
- Mother ___ (miner's big discovery)
- ___ of knowledge
- Prospector's jackpot
- Gold miner's strike
- Miner's lucky strike
- Forty-niner's strike
- Mining bonanza
- 49er's goal
- Way-valuable vein
- Deposit of valuable ore running through other rocks
- Rich mine supply
- Source of inspiration in spring
- Source of nut production