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Gatelite-(Ce)

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Pierre Gatel
Formula:
CaCe3Al2(Al,Mg)(Mg,Fe2+,Al)(Si2O7)(SiO4)3(O,F)(OH,O)2
Colour:
colourless
Hardness:
6 - 7
Specific Gravity:
4.51 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
For Pierre Gatel, founder president of the Association Française de Microminéralogie (AFM).
Gatelite-(Ce) can be regarded as a ET polisome within a polysomatic series having epidote and törnebohmite as end-members.


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Classification of Gatelite-(Ce)Hide

Approved
Approval Year:
2001
8/C.24-100
9.BG.50

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination

Physical Properties of Gatelite-(Ce)Hide

Transparency:
Transparent
Colour:
colourless
Hardness:
6 - 7 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
on {100}
Fracture:
Irregular/Uneven
Density:
4.51 g/cm3 (Calculated)

Chemical Properties of Gatelite-(Ce)Hide

Formula:
CaCe3Al2(Al,Mg)(Mg,Fe2+,Al)(Si2O7)(SiO4)3(O,F)(OH,O)2
IMA Formula:
(Ca,Ce)4(Al,Mg,Fe)4(Si2O7)(SiO4)3(O,F,OH)3
Common Impurities:
REE,Nb

Crystallography of Gatelite-(Ce)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 17.77 Å, b = 5.651 Å, c = 17.458 Å
β = 116.18°
Ratio:
a:b:c = 3.145 : 1 : 3.089
Unit Cell V:
1573.3 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
15.67 (87)
3.49 (50)
2.97 (100)
2.83 (44)
2.61 (56)

Type Occurrence of Gatelite-(Ce)Hide

General Appearance of Type Material:
striated crystals, finely intergrown with minute lamellae of törnebohmite-(Ce)
Geological Setting of Type Material:
Talc deposit
Associated Minerals at Type Locality:

Synonyms of Gatelite-(Ce)Hide

Other Language Names for Gatelite-(Ce)Hide

Relationship of Gatelite-(Ce) to other SpeciesHide

Member of:
Other Members of this group:
Alnaperbøeite-(Ce)(CaCe2.5Na0.5)(Al4)(Si2O7)(SiO4)3O(OH)2Mon. 2/m : P21/m
Ferriperbøeite-(Ce)(CaCe3)(Fe3+Al2Fe2+)(Si2O7)(SiO4)3O(OH)2Mon. 2/m : P21/m
Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2 Mon. 2/m : P21/m
UM2007-35-SiO:AlCaFFeMgREECa(Ce,La)3Al2Fe2+2(Si2O7)(SiO4)3(OH)2F
Västmanlandite-(Ce)Ce3CaMg2Al2Si2O15(OH)2FMon. 2/m : P21/m

Related Minerals - Nickel-Strunz GroupingHide

9.BG.XCyprineCa19Cu2+(Al10Mg2)Si18O68(OH)10Tet. 4/m : P4/n
9.BG.05bAllanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Y){CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05aClinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bDissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05aEpidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Hancockite{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Khristovite-(Ce){CaCe}{MgAlMn2+}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05Mukhinite{Ca2}{Al2V3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Piemontite-(Sr){CaSr}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05bManganiandrosite-(La){Mn2+La}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Tawmawite{Ca2}{(Al,Fe3+,Cr)3}(Si2O7)(SiO4)O(OH)
9.BG.05Tweddillite{CaSr}{Mn3+AlMn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Niigataite{CaSr}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m
9.BG.05Manganiandrosite-(Ce){Mn2+Ce}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dissakisite-(La){CaLa}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Vanadoandrosite-(Ce){Mn2+Ce}{V3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Uedaite-(Ce){Mn2+Ce}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Epidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Nd){CaNd}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(La){CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bÅskagenite-(Nd){Mn2+Nd}{Al2Fe3+}(Si2O7)(SiO4)O2Mon. 2/m : P21/m
9.BG.10Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.15MacfalliteCa2Mn3+3(SiO4)(Si2O7)(OH)3Mon.
9.BG.15SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.20Julgoldite-(Fe2+)Ca2Fe2+Fe3+2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20OkhotskiteCa2(Mn,Mg)(Mn3+,Al,Fe3+)2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Fe3+)Ca2(Fe3+,Mg)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2 · H2OMon.
9.BG.20Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20ShuiskiteCa2MgCr2(Si2O7)(SiO4)(OH)2 · 2H2OMon.
9.BG.20Julgoldite-(Fe3+)Ca2Fe3+Fe3+2(Si2O7)(SiO4)O(OH) · H2OMon.
9.BG.20Pumpellyite-(Al)Ca2Al3(Si2O7)(SiO4)(OH,O)2 · H2OMon.
9.BG.20PoppiiteCa2(V3+,Fe3+,Mg)(V3+,Al)2(Si2O7)(SiO4)(OH,O)2 · H2OMon. 2/m : B2/m
9.BG.20Julgoldite-(Mg)Ca2MgFe3+2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.25GanomalitePb9Ca5Mn(Si2O7)4(SiO4)OHex.
9.BG.30RustumiteCa10(Si2O7)2(SiO4)(OH)2Cl2Mon.
9.BG.35Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10Tet.
9.BG.35WiluiteCa19(Al,Mg)13(B,☐,Al)5(Si2O7)4(SiO4)10(O,OH)10Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35ManganvesuvianiteCa19Mn3+(Al,Mn3+,Fe3+)10(Mg,Mn2+)2(Si2O7)4(SiO4)10O(OH)9Tet. 4/m : P4/n
9.BG.35FluorvesuvianiteCa19(Al,Mg,Fe2+)13(Si2O7)4(SiO4)10O(F,OH)9Tet. 4/mmm (4/m 2/m 2/m)
9.BG.40Vyuntspakhkite-(Y)(Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7
9.BG.45DellaiteCa6Si3O11(OH)2Tric.
9.BG.55Västmanlandite-(Ce)Ce3CaMg2Al2Si2O15(OH)2FMon. 2/m : P21/m

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 Gatelite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogy (2003): 88: 223-228.

Internet Links for Gatelite-(Ce)Hide

Localities for Gatelite-(Ce)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.
France (TL)
 
  • Occitanie
    • Ariège
      • Luzenac
Am. Min. 88:223-228 (2003)
Sweden
 
  • Västmanland
    • Norberg
Steffen Möckel probed (EDX 29/08/2005) - M.E. Ciriotti collection
Mineral and/or Locality  
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