Davidite-(Ce) (original) (raw)

A valid IMA mineral species

About Davidite-(Ce)Hide

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Formula:

Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38

Colour:

Black; shiny black

Name:

Named in 1988 by Ernest H. Nickel and Joseph A. Mandarino in honor of Professor Tannat William Edegeworth David [January 28, 1858 St. Fagans (near Cardiff), Glamorganshire, Wales, United Kingdom - August 28, 1934 Sydney, New South Wales, Australia], studied in Cardiff and at the Royal School of Mines, before accepting a position as assistant geological surveyor in New South Wales, Australia. His early work involved studying the tin mining in the New England District and later was assigned to study the Hunter Valley Coal Fields where he discovered the important Greta Coal Seam. In 1891, David was appointed Professor of Geology at the University of Sydney. In 1896, David participated in or actually led expeditions to study the formation on atolls on Funafuti with William Sollas, George Sweet, William George Woolnough, Alfred Edmund Finckh, and others. David also conducted studies of glaciation, including pre-Cambrian glaciation. David discovered what he believed were the first known pre-Cambrian fossils. David was on the first Antarctic Expedition with Ernest Shackleton and led the first ascent of Mount Erebus and to discover the South Magnetic Pole. During World War I, David served with high distinction as well as valor, employing his skills to tunneling, trenching, and fortifications. David authored the Geological Map of the Commonwealth and the accompanying Explanatory Notes, but did not live to complete Geology of the Commonwealth of Australia. He was honored with a state funeral. David earned many of the highest honors established by Australia and the British Empire. Among many noteworthy achievements was his organization of scientific societies. Additionally, many geographic names are assigned in his honor. The suffix Ce was added to indicated the dominant REE.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:1233:7

398e5005-5406-4321-998f-4ab0578370d8

IMA Classification of Davidite-(Ce)Hide

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Type description reference:

Classification of Davidite-(Ce)Hide

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4.CC.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations

8.5.1.6

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
5 : AB21O38

7.16.22

7 : Oxides and Hydroxides
16 : Oxides of U

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Pronunciation of Davidite-(Ce)Hide

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Pronunciation:

Physical Properties of Davidite-(Ce)Hide

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Colour:

Black; shiny black

Comment:

Color on unweathered splinters. Oxidized surfaces have a brown or reddish color.

Density:

4.29 g/cm3 (Measured)

Chemistry of Davidite-(Ce)Hide

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Mindat Formula:

Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38

Chemical AnalysisHide

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Crystallography of Davidite-(Ce)Hide

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Class (H-M):

3 - Rhombohedral

Comment:

Point Group: [3 or 3]; Space Group: [R3.] metamict

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Tuftane, Norway. Data are after heating sample at 1030°C in air for 24 hours.

Geological EnvironmentHide

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Type Occurrence of Davidite-(Ce)Hide

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General Appearance of Type Material:

Elongated masses with rough semi-linear outlines attaining a length of 20 cm or more.

Place of Conservation of Type Material:

Mineralogical-Geological Museum, University of Oslo, Oslo, Norway.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

NEUMANN, H., & SVERDRUP, T. L. (1960). Contribution to the mineralogy of Norway. 8. Davidite from Tuftan, Iveland. Norsk Geol. Tidsskr, 40, 277-288.

Synonyms of Davidite-(Ce)Hide

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Other Language Names for Davidite-(Ce)Hide

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Relationship of Davidite-(Ce) to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of Davidite-(Ce)Hide

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Other InformationHide

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Health Risks:

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

Internet Links for Davidite-(Ce)Hide

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References for Davidite-(Ce)Hide

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Localities for Davidite-(Ce)Hide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.