mother lode 主礦脈,資源的源頭,大量而重要的部分

the place where the largest amount of gold, silver, etc., in a particular area can be found; a major or profitable source or supply

Examples: 1) Cairn Energy recently struck the mother lode of oil fields in India.

2) New York City is a mother lode of actors.

(BBC, 2016/11/01)

Republican presidential candidate Donald Trump has said he believes the FBI may have found the “motherlode” of Hillary Clinton’s emails. At a rally in Grand Rapids, Michigan, he said he hoped the Democratic candidate’s 33,000 deleted messages could now be recovered.

The FBI is investigating new emails that may be linked to its probe into Mrs. Clinton’s private email server.




(Seattle Times, 2014/02/27)

NASA announces “mother lode” of new planets: 715

Our galaxy is looking far more crowded and hospitable. NASA on Wednesday confirmed a bonanza of 715 newly discovered planets outside our solar system.

Scientists using the planet-hunting Kepler telescope pushed the number of planets discovered in the galaxy to about 1,700.



(The Washington Post, 2016/10/4)

Paleontologists have been hunting for dinosaur footprints in Mongolia since 1957, when a researcher stumbled upon dozens of tracks in the cold, dry desert. As researcher Shinobu Ishigaki and his colleagues reported in the journal Geological Quarterly in 2009, the Gobi is something of a fossilized footprint mother lode: Between 1995 and 2008, the scientists found more than 20,000 preserved tracks belonging to a variety of dinosaur species.


Sound: ICRT podcast

Photo (Trump): macleans 

Photo (stars): motherboard 

Photo (dinosaur): world bulletin