Kröhnkite- Chuquicamata Mine, Calama, El Loa Province, Antofagasta, Chile

Kröhnkite
Chuquicamata Mine, Calama, El Loa Province, Antofagasta, Chile (type locality)
Dimensions: 4.2 x 1.6 x 0.6 cm

This crystal displays the saturated turquoise hues that make the species instantly recognizable, its translucent body and softly textured faces reflecting light with a subtle, almost velvety glow. Small remnants of the original matrix remain along the termination, preserving a tangible connection to the environment in which it formed.

Kröhnkite is a rare hydrated sodium copper sulfate that develops under highly specialized conditions. It forms as copper-bearing waters slowly evaporate in extremely arid climates, precipitating delicate crystals along fractures and exposed rock surfaces. Because the mineral is readily soluble in water, well-preserved specimens are uncommon and depend on exceptionally dry conditions for their survival.

This example comes from the famed Chuquicamata Mine in northern Chile, one of the world's largest copper deposits and a locality celebrated for its extraordinary suite of secondary copper minerals. The mine's oxidized zones have produced an array of vividly colored species that have become classics in mineral collections around the world.

The elongated crystal exhibits excellent color saturation and pleasing translucency, with natural growth textures that enhance rather than diminish its appeal. While modest in size, it is an elegant representative of a species that is both visually striking and geologically uncommon. For collectors of rare copper minerals or classic Chilean localities, this specimen embodies the unique chemistry and enduring fascination of the Atacama Desert's mineral wealth.

Comes with old stock tag.