Hydroboracite - Kohnstein Quarry, Germany - 9.2 x 5.3 x 3.1 cm.

Mineral: Hydroboracite
Locality: Kohnstein Quarry, Niedersachswerfen, Nordhausen District, Thuringia/Thüringen, Germany
Dimensions: 9.2 x 5.3 x 3.1 cm.

Description: Radiating sprays of opaque white acicular hydroboracite crystals on gray anhydrite.