Jarosite with Natrojarosite

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

Specimen size: 7.5 × 4.7 × 4.6 cm = 2.95” × 1.85” × 1.81”
Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”