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Fire Opal Mines: Magdalena, Mexico

Fire opal mining in Mexico dates back several hundred years, and the main mining region is located near the town of Magdalena in Jalisco, Mexico, and later in the state of Querétaro. All of the original mining locations were lost during the Spanish Conquest, but in 1840, Sir José María Siurab rediscovered some of the original deposits at what is known as the Santa María Iris mines, in Hacienda Esmeralda (map below).

The first mine found in the region was La Unica near the Huitzicilapan ranch, a municipality of Magdalena. A year later they would have discovered the mines Las Latillas and La Mora on the San Andres hill.

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