San Antonio Mine (San Antonio el Grande Mine), chimenea Cox, level 4, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua Mexico (2011)
Specimen size: 3.7 × 2.8 × 2.2 cm = 1.46” × 1.10” × 0.87” Main crystal size: 0.8 × 0.2 cm = 0.31” × 0.08”
