The Colorado Silver Boom was a dramatic expansionist period of silver mining activity in the U.S. state of Colorado in the late 19th century. The boom started in 1879 with the discovery of silver at Leadville. Over 82 million dollars worth of silver was mined during the period, making it the second great mineral boom in the state, and coming 20 years after the earlier and shorter Colorado Gold Rush of 1859. The boom was largely the consequence of large-scale purchases of silver by the United States Government authorized by Congress in 1878. The boom endured throughout the 1880s, resulting in an intense increase in both the population and wealth of Colorado, especially in the mountains. It came to an end in 1893 in the wake of the collapse of silver prices caused by the repeal of Sherman Silver Purchase Act. Silver had been discovered in Colorado in the 1860s, with early mining in Clear Creek Canyon at Georgetown in 1864. In the early days, the mineral was overshadowed by gold, and the low price of mineral meant that most mines were not profitable enough to operate. In 1878, responding to pressure from western interests, the United States Congress passed the Bland–Allison Act authorizing the free coinage of silver. The government demand raised the price of the metal to the point where many additional mines were profitable. The discovery of the Leadville district the following year resulted in a flood of new immigrant prospectors to many of the same mountain gullies that had been the site of the gold rush. The resulting opulence was most lavish in Leadville itself. The repeal of the Sherman Act in 1893 conversely led to a collapse of silver prices, bringing an end to the boom as. Beginning in 1889, Creede, Colorado was the site of another big silver boom. The first discovery was made at the Alpha mine in 1869, but the silver could not be extracted at a profit from the complex ores. The great “Boom Days” started with the discovery of rich minerals in Willow Creek Canyon. The town leapt from a population of 600 in 1889 to more than 10,000 people in December 1891. The mines operated continuously until 1995. Creede was the last silver boom town in Colorado in the 19th century. The boom continued unabated throughout the 1880s and early 1890s, years that gave the state many of the