Thulite

Thulite is a pink Zoisite mineral, mostly found in Norway.

It makes a nice decorative piece and is often sold polished. It has also been found in Austria and the USA, but the Norwegian locales are the most plentiful.

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Appearance, Uses and History

Thulite was named after the island of Thule, an unidentified island named several times throughout history.

Thulite is pretty much exclusively used as a decorative material for carving, or a gemstone cut into beads or cabochons. It is a mottled pink, red and white mineral, and is almost always sold polished to show off the colours nicely.


Locales

Thulite is only found in a few locations worldwide, two locations in Norway, two locations in the USA, and one locale in Austria.


Mineralogy

Chemistry
A pink variety of Zoisite, with the formula Ca2Al3(SiO4)(Si2O7)(O,OH). Its pink colour is caused by Manganese.
Colours and Variations
Mottled pink and white colour. Sometimes has red or grey.
Streak
White
Luster
Vitreous, pearly
Fracture
Conchoidal
Transparency
Translucent to opaque.
Crystal habit
Massive.
Mohs hardness
6.0 – 7.0
Specific Gravity
3.1 – 3.45
Fluorescence
N/A
Easiest testing method
Common Treatments

Photos of Thulite

Zoisite (variety thulite)-540386
Zoisite (Thulite)-191739
Pink tulite from Lia, Norway

Freiberg, Terra mineralia, Thulit
Thulite
Zoisite (variety thulite)-540383

Hazards and Warnings

Almost all rocks, minerals (and, frankly, almost all other substances on earth) can produce toxic dust when cutting, which can cause serious respiratory conditions including silicosis.

When cutting or polishing rocks, minerals, shells, etc, all work should be done wet to minimise the dust, and a suitable respirator or extraction system should be used.


Translations

Arabic:

  • الثوليت

Hindi:

Portuguese:

Bengali:

Indonesian:

Punjabi:

English:

  • thulite
  • rosaline

Italian:

Russian:

  • тулит

French:

Japanese:

  • チューライト

Spanish:

German:

  • Thulit

Korean:

Thai:

Gujurati:

Mandarin and Traditional Chinese:

Urdu:


Further Reading / External Links