Bonanza

n.

1.

In mining, a rich mine or vein of silver or gold; hence, anything which is a mine of wealth or yields a large income.

Noun	1.	bonanza - an especially rich vein of precious ore
	2.	bonanza - a sudden happening that brings good fortune (as a sudden opportunity to make money); "the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed lik an assembly line" Synonyms: bunce, godsend, gold rush, gravy, manna from heaven, windfall, boom

Eldorado, Golconda, abundance, affluence, ample sufficiency, ampleness, amplitude, avalanche, bountifulness, bountiousness, bumper crop, copiousness, cornucopia, eldorado, extravagance, exuberance, fertility, flood, flow, foison, font, fount, fountain, full measure, fullness, generosity, generousness, gold mine, gravy train, great abundance, great plenty, gush, house, landslide, lavishness, liberality, liberalness, lode, lots, luxuriance, maximum, mine, mine of wealth, more than enough, mother lode, much, myriad, myriads, numerousness, opulence, opulency, outpouring, overflow, plenitude, plenteousness, plentifulness, plenty, prevalence, prodigality, productiveness, profuseness, profusion, quantities, quarry, repleteness, repletion, resource, rich harvest, rich lode, rich uncle, rich vein, richness, riot, riotousness, scads, shower, source, source of supply, spate, spring, staple, stream, substantiality, substantialness, superabundance, teemingness, treasure, treasure trove, treasury, vein, wealth, well, wellspring