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Named after "Thule", the ancient name of Scandinavia (and mythical island).
A variety of Zoisite

A pink variety of zoisite, frequently manganian, i.e. containing trivalent Mn (not manganoan, which refers to divalent Mn). Originally described from Kleppan, Sauland, Hjartdal, Telemark, Norway.

NOTE: "Thulite" from granite pegmatites and some metamorphic rocks is frequently the clinothulite variety of clinozoisite and not true zoisite.

Visit for gemological information about Thulite.

Classification of Thulite URL:
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First Recorded Occurrence of Thulite

Occurrences of Thulite

Geological Setting:
Much of the so-called thulite from granite pegmatites, particularly in North Carolina, has proven to be clinothulite (Richard C. Erd, unpublished data, 1996).

Physical Properties of Thulite


Chemical Properties of Thulite

All elements listed in formula:

Other Names for Thulite

Name in Other Languages:
Simplified Chinese:锰黝帘石

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Thulite

Reference List:
Schaller, Waldemar Theodore & Jewell Jeannette Glass (1942), Occurrence of pink zoisite (thulite) in the United States: American Mineralogist: 27: 519-524.

Clark, 1993 - "Hey's Mineral Index"

Langer, K., Tillmanns, E., Kersten, M., Almen, H., and Arni, R.K. (2002) The crystal chemistry of Mn 3+ in the clino- and orthozoisite structure types, Ca2M3 3+[OH|O|SiO4|Si2O7]: A structural and spectroscopic study of some natural piemontites and "thulites" and their synthetic equivalents. Zeitschrift für Kristallographie: 217: 563-580.

Internet Links for Thulite URL:
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The following Thulite specimens are currently listed for sale on

Localities for Thulite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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