Sulfur

specimen number:
2262169

location:
San Felipe, Baja California, Mexico

description:

Attractive yellow translucent crystals of native sulfur to 0.5 cm are in size across both sides of matrix. In good condition with very minimal damage present. Nice classic example for this locality, this from the very early 1960s if not into the 1950s.

San Felipe, located on the eastern coast of the Baja California peninsula in Mexico, is home to significant native sulfur deposits associated with the region's active tectonic and geothermal history. Geologically, these deposits are typically found within the Sierra de San Felipe and are related to volcanic activity and the hydrothermal alteration of sedimentary rocks along the Gulf of California rift system. The sulfur often occurs as bright yellow crystalline masses or encrustations within gypsiferous volcanic tuffs and breecias, formed by the oxidation of hydrogen sulfide gases. Historically, mining and quarrying for sulfur in the San Felipe area gained momentum in the mid-20th century, with various small to medium-scale operations active from the 1940s through the 1960s to supply industrial and agricultural markets. While modern large-scale production has largely shifted to petroleum byproduct recovery, the San Felipe localities remain significant for their geological context and as a source of native sulfur specimens for collectors.

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