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Cerite-(La)

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About Cerite-(La)Hide

Formula:
(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3
Colour:
Light yellow to pinkish-brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
4.7
Crystal System:
Trigonal
Member of:
Name:
La-dominant Cerite
Isostructural with:
The lanthanum and iron analogue of Cerite-(Ce). Isostructural with phosphates of Whitlockite group.


Classification of Cerite-(La)Hide

Approved
Approval Year:
2001
9.AG.20

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination

Physical Properties of Cerite-(La)Hide

Vitreous
Transparency:
Translucent
Colour:
Light yellow to pinkish-brown
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.7 g/cm3 (Measured)    4.75 g/cm3 (Calculated)

Optical Data of Cerite-(La)Hide

Type:
Uniaxial (+)
RI values:
nω = 1.810 nε = 1.820
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Non-pleochroic

Chemical Properties of Cerite-(La)Hide

Formula:
(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3
IMA Formula:
(La,Ce,Ca)9(Fe3+,Ca,Mg)(SiO4)3(SiO3OH)4(OH)3

Crystallography of Cerite-(La)Hide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3c
Cell Parameters:
a = 10.7493 Å, c = 38.318 Å
Ratio:
a:c = 1 : 3.565
Unit Cell V:
3834.4 ų
Z:
6
Morphology:
{102} and {001}, habit equant to tabular on {001}.
Twinning:
None mentioned.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.53 Å(26)
3.47 Å(40)
3.31 Å(38)
3.10 Å(25)
2.958 Å(100)
2.833 Å(37)
2.790 Å(24)
2.689 Å(34)
1.949 Å(34)

Type Occurrence of Cerite-(La)Hide

General Appearance of Type Material:
Porous pseudomorphs up to 7cm long after unidentified hexagonal prismatic mineral (Belovite-(Ce) ?). Framework-like aggregates of crystals up to 2mm within these pseudomorphs.
Geological Setting of Type Material:
In an aegirine-natrolite-microcline vein in foyaite.
Associated Minerals at Type Locality:

Synonyms of Cerite-(La)Hide

Other Language Names for Cerite-(La)Hide

German:Cerit-(La)
Simplified Chinese:镧硅铈石
Traditional Chinese:鑭矽鈰石

Relationship of Cerite-(La) to other SpeciesHide

Member of:
Other Members of this group:
Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
Taipingite-(Ce)(Ce3+7Ca2)Σ9Mg(SiO4)3[SiO3(OH)]4F3Trig. 3m : R3c

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Cerite-(La) associated with Ancylite-(Ce)CeSr(CO3)2(OH) · H2O

Related Minerals - Nickel-Strunz GroupingHide

9.AG.EdgrewiteCa9(SiO4)4F2Mon. 2/m : P21/b
9.AG.05AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.10LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
9.AG.15MalayaiteCaSn(SiO4)OMon.
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon.
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon.
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.25Mieite-(Y)Y4Ti(SiO4)2O[F,(OH)]6Orth. mmm (2/m 2/m 2/m) : Cmcm
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet.
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet.
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth.
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)Mon. 2/m : P21/b
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5Tric. 1 : P1
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth.
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric.
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hex.

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.

References for Cerite-(La)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pakhomovsky, Y.A., Men’shikov, Y.P., Yakovenchuk, V.N., Ivanyuk, G.Y., Krivovichev, S.V., Burns, P.C. (2002): Cerite-(La), (La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3[SiO3(OH)]4(OH)3, a new mineral species from the Khibina alkaline massif: Occurrence and crystal structure. Can. Mineral., 40, 1177-1184.

Internet Links for Cerite-(La)Hide

Localities for Cerite-(La)Hide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Madagascar
 
  • Diana
    • Ambanja
      • Antsirabe
G. Estrade/University of Toulouse personal communication to W.Hampel, 2011
Russia (TL)
 
  • Murmansk Oblast
    • Khibiny Massif
Canadian Mineralogist 40: 1177-1184
Pekov I.V. (2007) New minerals from former Soviet Union countries 1998-2006, - Mineralogical Almanac, v.11, p. 15.
South Africa
 
  • North West
    • Bojanala Platinum District
      • Brits (Brits District)
Atanasova, M., Cairncross, B. and Windisch, W.R. (2016) Microminerals of the Bushveld Complex, South Africa. Popular Geoscience Series 6, Council for Geoscience, Pretoria, South Africa, pg 181
 
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