UM2000-65-SiO:CaCe

Valid as an unnamed mineral

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Formula:

CaCe₂(SiO₄)₂

May represent Ce analogue of synthetic Ca₃La₆(SiO₄)₆ (PDF27-28), that is hexagonal.

As isometric grains, up to 75 × 120 mm (or rather microns ??).

Electron microprobe data, wt.%:

SiO₂ 22.0
La₂O₃ 9.9
Ce₂O₃ 29.2
Pr₂O₃ 4.7
Nd₂O₃ 16.9
Sm₂O₃ 3.0
Gd₂O₃ 1.6
CaO 10.2
P₂O₅ 1.9

total 99.4

This corresponds to Ca_0.92(Ce_0.91Nd_0.51La_0.31Pr_0.14Sm_0.09Gd_0.04)_Σ2.00(Si_1.86P_0.14)_Σ2.00O₈.

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Unique IdentifiersHide

Mindat ID:

54222

Long-form identifier:

mindat:1:1:54222:9

IMA Classification of UM2000-65-SiO:CaCeHide

IMA status notes:

Unnamed (probably valid)

Chemistry of UM2000-65-SiO:CaCeHide

Mindat Formula:

CaCe₂(SiO₄)₂

Element Weights:

Element	% weight
Ce	55.549 %
O	25.372 %
Si	11.135 %
Ca	7.945 %

Calculated from ideal end-member formula.

Elements listed:

Ca, Ce, O, Si - search for minerals with similar chemistry

Other InformationHide

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 UM2000-65-SiO:CaCeHide

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References for UM2000-65-SiO:CaCeHide

Reference List:

Karchevsky, P.I. (2000): Minerals of Sr and REE in carbonatites from the Loolekop deposit (Phalaborwa, RSA). Zapiski Vseross. Mineral. Obshch.: 129(1): 99–109 (in Russian, with English abs.); in: Jambor, J.L., Kovalenker, V.A., Roberts, A.C.(2001): New mineral names. Am. Min.: 86: 378.

Smith, D. G.W.; Nickel, E. H. (2007) A System of Codification for Unnamed Minerals: Report of the Subcommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. The Canadian Mineralogist, 45 (4). 983-990 doi:10.2113/gscanmin.45.4.983

Localities for UM2000-65-SiO:CaCeHide

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

- 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.

South Africa

Limpopo

Mopani District Municipality

Ba-Phalaborwa Local Municipality

Phalaborwa

Palabora Mine

ⓘ Loolekop pipe

Karchevsky (2000) +1 other reference