Witherite, Calcite, Baryte, and more! North Yorkshire, England

Contributed by: FMS Admin
Date: Mar 13th, 2026
Locality: Danby Level, Northside Mines, Whaw, Arkengarthdale, Richmondshire, North Yorkshire, England, UK (See on Mindat)

Description:
England has some very interesting and famous fluorescent materials. Material from the Danby Level, Northside Mines, Whaw, Arkengarthdale, North Yorkshire, England, UK is a little more off the beaten bath. Here is a witherite, calcite, baryte from the locale, with perhaps a little barytocalcite and hydrozincite as well. Witherite is cream/white, calcite red, baryte yellow/white, barytocalcite pink and hydrozincite blue (specs). The witherite is also somewhat phosphorescent (not shown).

Fluorescence under shortwave UV light.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

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

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

• Fluorescence under Shortwave (255nm LED) UV light: Yellow