Jarosite with Natrojarosite

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

Specimen size: 6.7 × 4.4 × 3.8 cm = 2.64” × 1.73” × 1.50”
Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”