Synonyms for mother lode
EXAMPLES FROM THE WEB FOR MOTHER LODE
The richest bonanza that the "mother lode" ever yielded he struck.
He starts from the placer fields to search for the mother lode.
It is hence not improbable that the “mother lode” will some day be found there.
Steve shouted down to me that the slip had uncovered the mother lode.
She had found the mother lode that the Indian girl had told of.
But I can bring up the grub, while you keep after that mother lode.
"Me, too," said Kit, and the other boys raised a shout for the mother lode and the excitement of finding gold.
Briefly Ted related the story told by Singing Bird about the gold in the river, and how her father found the mother lode.
If I hadn't that hunch to sit down here, we wouldn't have found the mother lode in a blue moon.
Much less than a commercially valuable placer deposit in unconsolidated surface rocks may start a search for the mother lode.