Davidite-(Ce)

Where it forms, where it's found

Geological setting: Granite pegmatite.
Type locality: Frikstad 03 Feldspar Quarry (Tuftane)
Frikstad
Iveland
Agder
Norway
58.5244°, 7.8978°

10recorded occurrences

Source · OpenStreetMap

Radioactivity

Physical

Hardness: 1Talc
2Gypsum
3Calcite
4Fluorite
5Apatite
6Orthoclase
7Quartz
8Topaz
9Corundum
10Diamond
Lustre: Vitreous
Transparency: Opaque
Colour: Black · shiny black
Color on unweathered splinters. Oxidized surfaces have a brown or reddish color.
Tenacity: brittle
Fracture: Sub-Conchoidal
Density: 4.29 g/cm³

Optical

UV response: Not fluorescent in UV.

Crystallography

Crystal system: Trigonal
Space group: #80
Type-locality form: Elongated masses with rough semi-linear outlines attaining a length of 20 cm or more.
Comment: Point Group: [3 or _3]; Space Group: [R_3.] metamict

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 76 15.999 1215.924
19.38%
26FeIron Iron 20 55.845 1116.900
17.80%
24CrChromium Chromium 18 51.996 935.928
14.92%
23VVanadium Vanadium 18 50.942 916.956
14.61%
22TiTitanium Titanium 18 47.867 861.606
13.73%
9FFluorine Fluorine 38 18.998 721.924
11.51%
92UUranium Uranium 1 238.029 238.029
3.79%
58CeCerium Cerium 1 140.116 140.116
2.23%
39YYttrium Yttrium 1 88.906 88.906
1.42%
1HHydrogen Hydrogen 38 1.008 38.304
0.61%
Total 6274.593 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From IMA formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	76	15.999	1215.924	19.38%
26FeIron	Iron	20	55.845	1116.900	17.80%
24CrChromium	Chromium	18	51.996	935.928	14.92%
23VVanadium	Vanadium	18	50.942	916.956	14.61%
22TiTitanium	Titanium	18	47.867	861.606	13.73%
9FFluorine	Fluorine	38	18.998	721.924	11.51%
92UUranium	Uranium	1	238.029	238.029	3.79%
58CeCerium	Cerium	1	140.116	140.116	2.23%
39YYttrium	Yttrium	1	88.906	88.906	1.42%
1HHydrogen	Hydrogen	38	1.008	38.304	0.61%
	Total	6274.593	100.00%

Synonyms

Davidiet-(Ce)

In other languages

German: Davidit-(Ce)
Italian: Davidite- · Davidite-(Ce)
Chinese: 铈铀钛铁矿

Classification

Strunz

10th ed.

4.CC.40

4OxidesClass
4.CMetal: Oxygen = 2: 3,3: 5, and similarDivision
4.CCWith large and medium-sized cationsGroup
4.CC.40Davidite-(Ce)Species

Dana

8th ed.

08.05.01.06

08Multiple Oxides Containing Niobium, Tantalum or TitaniumClass
08.05AB₂₁O₃₈Type
08.05.01Crichtonite group (ABC18 T2 O38)Group
08.05.01.06Davidite-(Ce)Species

CIM

—

7.16.22

7Oxides and HydroxidesClass
7.16Oxides of UGroup
7.16.22Davidite-(Ce)Species

Group, growth & confusion

18 members

1 mineral

Davidite-(La)La(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈
Mineral
—

Literature, links & citation

Citations

—Economic Geology: 54: 64-81.
1960Neumann, Henrich; Sverdrup, Thor L. (1960) Contributions to the mineralogy of Norway. No. 8. Davidite from Tuftan, Iveland. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 40 (3-4). 277-288
1966Levinson, A. A. (1966) A system of nomenclature for rare-earth minerals. American Mineralogist, 51 (1-2) 152-158
1979Gatehouse, Bryan M., Grey, Ian E., Kelly, Patrick R. (1979) The crystal structure of davidite. American Mineralogist, 64 (9-10) 1010-1017
1987Nickel, Ernest H., Mandarino, Joseph A. (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. American Mineralogist, 72 (9-10) 1031-1042

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Davidite-(Ce) — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/davidite-ce-1233},
  note      = {Accessed 2026-05-11}
}