Botryoidal Hydrozincite from Spain

Contributed by: Mark Cole
Date: Mar 10th, 2026
Locality: Reocín Mine, Reocín, Cantabria, Spain (See on Mindat)
Size: 2 x 1.5 x 2.5 inches
Weight: 1.4 oz

Description:
The Reocín deposit in Cantabria Province consists of primary sulfide ore and was one of Europe’s largest zinc mining operations. Hydrozincite in this form is a very bright fluorescent - will light up any corner of a dark display. Shown under shortwave and natural.

Originally posted by Mark Cole on Nature's Rainbows.

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Hydrozincite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue