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System:IsometricColour:Blue, reddish
Lustre:VitreousHardness:4 - 5
Name:Named from its chemical composition containing yttrium (named after Ytterby, Sweden) and cerium (named after the asteroid Ceres).
A variety of Fluorite

Y-rich fluorite (see also yttrofluorite). Note: A great many occurrences of yttrocerite reported in the nineteenth century were false. The so-called "yttrocerite" has repeatedly been shown to be ordinary purple fluorite without enrichment of rare earth elements.

Classification of Yttrocerite

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Physical Properties of Yttrocerite

Colour:Blue, reddish
Hardness (Mohs):4 - 5

Crystallography of Yttrocerite

Crystal System:Isometric

Optical Data of Yttrocerite


Chemical Properties of Yttrocerite

Simplified for copy/paste:(Ca,Y,Ce)F2+x
Essential elements:Ca, F
All elements listed in formula:Ca, Ce, F, Y

Other Names for Yttrocerite

Other Languages:
French:Yttria fluatée

Other Information

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

References for Yttrocerite

Reference List:

- +
Gahn and Berzelius (1814) Afhandlingar I Fysik, Kemi och Mineralogi, Stockholm:4: 151.

Palache, Charles, Harry Berman & Clifford Frondel (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: 29.

Internet Links for Yttrocerite

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  • Localities for Yttrocerite

    The 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.
    (TL) indicates type locality. ? 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.
    • Nordland
      • Tysfjord
    Sverdrup, T. L. (1968): Contributions to the Mineralogy of Norway No. 37. Yttrofluorite-yttrocerite-cerfluorite in norwegian pegmatites. Norsk Geologisk Tidsskrift 48: 245-252
    • Dalarna
      • Falun
    Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 1, 119.
    No reference listed
    GFF 1, 119
    • Alaska
      • North Slope Borough
        • Canning District
    U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
    • Colorado
      • Douglas Co.
        • Devils Head Pegmatite District
    Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 24 (Table A-1).
    Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 25 (Table A-1).
    Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 25 (Table A-1).
      • Jefferson Co.
        • South Platte Pegmatite District
    Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 27 (Table A-1).
    • Massachusetts
      • Essex Co.
    Gleba, 1978. Massachusetts Mineral & Fossil Localities
    McKinstry, H. E. (1921): The Minerals of Rockport, Massachusetts (American Mineralogist 6:56-60).
    Sears, J. H.(1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County.
      • Worcester Co.
        • Bolton
    Hitchcock, Edward (1835). Report on the Geology, Mineralogy, Botany, and Zoology of Massachusetts, pp. 308-311.
    • New York
      • Orange Co.
        • Town of Warwick
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 71.
    • North Carolina
      • Yancey Co.
        • Spruce Pine District
          • Burnsville
            • Hurricane Mountain
    "Mineralogy of the Ray Mica Mine" by J.W. Miller and C.W. Allen, Genth,F.A and Kerr,W.C.,1885,The minerals and mineral localities of North Carolina:pp.127
    • Texas
      • Hudspeth Co.
        • Sierra Blanca Peaks
    Am Min 72:1122-1130
    Am Min 72:1122-1130
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