The La Viesca Mine in the La Collada mining area near Huergo, Siero in Asturias, Spain is a historically significant fluorite (fluorspar) mine first developed in the early 20th century. Originally worked by local companies under rights held by Felgueroso Hermanos and later by Fluoruros S.A., the mine produced industrial-grade fluorite and notable collector-quality crystals through much of the 20th century, gaining renown among mineral enthusiasts worldwide. After a period of inactivity following its closure in the 1980s, mining resumed in 2004 under Preparación Minera del Norte (Preminor S.L.) via an inclined ramp to access deeper fluorite veins. The site has yielded exceptional specimens, including world-class pockets such as the “Geoda de Las Monjas” discovered in 2010, prized for their size and clarity.
This example of fluorite and quartz present a simple yet elegant aesthetic form one of Spain’s most famous fluorite locales. Gently colored glassy fluorites cluster atop a quartz druse which protrudes with subtlety. Overall, the specimen is in good condition, with only a couple crystals displaying damage but nothing visually striking.
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(3.8 × 2.5 × 1.5 in - 9.6 × 6.3 × 3.81 cm) 7.2oz / 205g
Orders ship Mondays
The La Viesca Mine in the La Collada mining area near Huergo, Siero in Asturias, Spain is a historically significant fluorite (fluorspar) mine first developed in the early 20th century. Originally worked by local companies under rights held by Felgueroso Hermanos and later by Fluoruros S.A., the mine produced industrial-grade fluorite and notable collector-quality crystals through much of the 20th century, gaining renown among mineral enthusiasts worldwide. After a period of inactivity following its closure in the 1980s, mining resumed in 2004 under Preparación Minera del Norte (Preminor S.L.) via an inclined ramp to access deeper fluorite veins. The site has yielded exceptional specimens, including world-class pockets such as the “Geoda de Las Monjas” discovered in 2010, prized for their size and clarity.
This example of fluorite and quartz present a simple yet elegant aesthetic form one of Spain’s most famous fluorite locales. Gently colored glassy fluorites cluster atop a quartz druse which protrudes with subtlety. Overall, the specimen is in good condition, with only a couple crystals displaying damage but nothing visually striking.
Thank you so much for viewing! Please message for any further information
(3.8 × 2.5 × 1.5 in - 9.6 × 6.3 × 3.81 cm) 7.2oz / 205g
Orders ship Mondays
