Systematica: 29 Apr - 06 May 2017

Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany

National Belle Mine, Red Mountain, Ouray County, Colorado, United States of America

Boron, Kern County, California, United States of America

Armstrong Farm, Johnsburg, Warren County, New York, United States of America

Ross Hannibal Mine, Lead, Lawrence County, South Dakota, United States of America

Campiglia Marittima, Livorno Province, Tuscany, Italy

Red Top Mine, Rawhide Wash, Mohave County, Arizona, United States of America

Wolf Creek Pass, Creede, Mineral County, Colorado, United States of America

Tincalayu Mine, Salar Del Hombre Muerto, Los Andes, Salta, Argentina

Arroyo de la Yedra, Manzanares el Real, Madrid, Spain

Salsigne Mine, Salsigne, Aude, Occitanie, France

Långban, Filipstad, Värmland County, Sweden

Tafone Mine, Manciano, Grosseto Province, Tuscany, Italy

San Francisco Mine, Caracoles, Sierra Gorda, Antofagasta Province, Antofagasta Region, Chile

Ponte do Piauí Claim, Piauí Valley, Taquaral, Minas Gerais, Brazil

Blue Bell Mine, Zzyzx, Soda Mountains, San Bernardino County, California, United States of America

Luiswishi Mine, Lubumbashi, Haut-Katanga, DR Congo

Cerro Mejillones, Mejillones Peninsula, Antofagasta Province, Antofagasta Region, Chile

Bambollita Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico

Tsumeb Mine, Otavi Highlands, Namibia

Perda Niedda Mine, Domusnovas, Cagliari Province, Sardinia, Italy

Sterling Hill, Ogdensburg, Sussex County, New Jersey, United States of America

La Creusa, Les Marécottes, Le Trient Valley, Valais, Switzerland

Sagåsen Quarry, Mørje, Porsgrunn, Vestfold og Telemark, Norway

Baratti Slag Locality, Piombino, Livorno Province, Tuscany, Italy

Bird Nest drift, Otto Mountain, Baker, Soda Mountains, San Bernardino County, California, United States of America