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Colourless (internal); ...
After P.C. Weibye, Norwegian mineralogist.
An inadequately defined material from Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö), Langesundsfjorden, Larvik, Vestfold, Norway.
A sample labeled weibeyite and collected by W.C. Brøgger in 1902 was found by Sverdrup et al. (1959) and Saebø (1963) to be bastnäsite pseudomorphous after ancylite. Some material may also be ancylite.

Classification of Weibyeite


Physical Properties of Weibyeite

Colourless (internal); ochre-yellow (surfaces)

Crystallography of Weibyeite

Crystals tiny.
Originally assumed to be orthorhombic.

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 Weibyeite

Reference List:
Brögger (1890) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 16: 650.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 293.

Saebø, P.C. (1963): Contributions to the mineralogy of Norway. No. 20. The identity of weibyeite. Norsk Geologisk Tidsskrift 43, 441-443. []

Internet Links for Weibyeite URL:
Please feel free to link to this page.

Localities for Weibyeite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Vestfold
    • Larvik
      • Langesundsfjorden
        • Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö)
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp (p. 650-658); Sverdrup, T. L.,Bryn, K. Ø. & Sæbø, P.Chr.(1959): Contributions to the mineralogy of Norway. No. 2. Bastnäsite, a new mineral for Norway. Geologisk Tidsskrift 39, 237-247; Sæbø, P.C.(1963): Contributions to the mineralogy of Norway. No. 20. The identity of Weibyeite. Geologisk Tidsskrift 439, 441-447
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