Jarosite with Natrojarosite

Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)

Specimen size: 3.9 × 3.9 × 1.6 cm = 1.54” × 1.54” × 0.63”
Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”