Alnaperbøeite-(Ce)
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
Formula:
Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2
Colour:
grayish very pale green
Lustre:
Vitreous
Hardness:
6 - 7
Specific Gravity:
4.308 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Emphasizes the chemical relationships with perbøeite-(Ce), the dominance of Al in the M3 site and the role of Na to charge balance the dominance of a trivalent cation in the M3 site of the REE-epidote module.
Type Locality:
Member of a polysomatic series having epidote and törnebohmite as end-members.
Forms a continuous solid-solution series with perbøeite-(Ce). Members of the perbøeite-(Ce)–alnaperbøeite-(Ce) solid solution are topologically identical to the minerals gatelite-(Ce) and västmanlandite-(Ce).
For photos see Alnaperbøeite-(Ce)-Perbøeite-(Ce) Series.
Forms a continuous solid-solution series with perbøeite-(Ce). Members of the perbøeite-(Ce)–alnaperbøeite-(Ce) solid solution are topologically identical to the minerals gatelite-(Ce) and västmanlandite-(Ce).
For photos see Alnaperbøeite-(Ce)-Perbøeite-(Ce) Series.
Name Encoding
ASCII-7:
Alnaperboeite-(Ce)
Unique Identifiers
Mindat ID:
43577
Long-form identifier:
mindat:1:1:43577:0
Similar Names
| Alnaperbøeite-(Ce)-Perbøeite-(Ce) Series | A solid-solution series between two end-member minerals |
IMA Classification of Alnaperbøeite-(Ce)
Classification of Alnaperbøeite-(Ce)
9.BG.
9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Apbø-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Alnaperbøeite-(Ce)
Vitreous
Transparency:
Transparent
Colour:
Grayish very pale green
Streak:
White
Hardness:
6 - 7 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
{100} good, {001} imperfect
{100} good, {001} imperfect
Fracture:
Irregular/Uneven
Density:
4.308 g/cm3 (Calculated)
Optical Data of Alnaperbøeite-(Ce)
Type:
Biaxial (+)
RI values:
nα = 1.778(2) nβ = 1.784(2) nγ = 1.810(5)
2V:
Measured: 33.5° (5)
Max. Birefringence:
δ = 0.032
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
inclined
Pleochroism:
Non-pleochroic
Chemistry of Alnaperbøeite-(Ce)
Mindat Formula:
Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2
Element Weights:
Crystallography of Alnaperbøeite-(Ce)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 8.9110(4) Å, b = 5.6866(2) Å, c = 17.5252(7) Å
β = 116.475(5)°
β = 116.475(5)°
Ratio:
a:b:c = 1.567 : 1 : 3.082
Unit Cell V:
796.13 ų
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 15.743 Å | (92) |
| 4.616 Å | (30) |
| 3.499 Å | (42) |
| 2.983 Å | (100) |
| 2.827 Å | (47) |
| 2.751 Å | (32) |
| 2.659 Å | (23) |
| 2.619 Å | (57) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Alnaperbøeite-(Ce)
General Appearance of Type Material:
In yttrian fluorite as gatelite-like crystals, some intimately inter-or overgrown by törnebohmite-(Ce)
Place of Conservation of Type Material:
Museo di Storia Naturale, Università degli Studi di Firenze, Firenze, Italy, catalogue number 3114/I
Empirical Formula of Type Material:
(Ca1.10Mn0.03Na0.20La0.42Ce1.14Pr0.16Nd0.60Sm0.13Gd0.07Dy0.03 Er0.01Yb0.01Y0.12Th0.02)Σ4.04 (Al3.54Fe2+0.40Mg0.02)Σ3.96Si4.99O20(OH)2
Chemical Analysis of Type Material:
| Ce2O3 | 40.86 % |
|---|---|
| CaO | 5.58 % |
| Na2O | 1.54 % |
| Al2O3 | 20.31 % |
| SiO2 | 29.92 % |
| H2O | 1.79 % |
| Total: | 100 % |
Geological Setting of Type Material:
quartz-microcline pegmatites of the niobium-yttrium-fluorine
family
family
Associated Minerals at Type Locality:
Synonyms of Alnaperbøeite-(Ce)
Other Language Names for Alnaperbøeite-(Ce)
Dutch:Alnaperbøeiet-(Ce)
French:Alnaperbøeite-(Ce)
German:Alnaperbøeit-(Ce)
Norwegian:Alnaperbøeitt-(Ce)
Relationship of Alnaperbøeite-(Ce) to other Species
Member of:
Forms a series with:
Related Minerals - Strunz-mindat Grouping
| 9.BG. | Alumovesuvianite | Ca19AlAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG. | Zilbermintsite-(La) | (CaLa5)(Fe3+Al3Fe2+)[Si2O7][SiO4]5O(OH)3 |
| 9.BG. | Heflikite | (CaCa)(AlAlSc)O[Si2O7][SiO4](OH) |
| 9.BG. | Magnesiovesuvianite | Ca19MgAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG. | Zoisite-(Pb) | (CaPb)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG. | Shuiskite-(Cr) | Ca2Cr3+Cr3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG. | Radekškodaite Group | |
| 9.BG.05 | Dissakisite-(La) | (CaLa)(AlAlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Manganiandrosite-(Ce) | (Mn2+Ce)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Dissakisite-(Ce) | (CaCe)(AlAlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Sm) | (CaSm)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Hancockite | (CaPb)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Dollaseite-(Ce) | (CaCe)(MgAlMg)F[Si2O7][SiO4](OH) |
| 9.BG.05a v | 'Unnamed (Ga-analogue of Epidote)' | (CaCa)(AlAlGa3+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Epidote-(Sr) | (CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Vanadoandrosite-(Ce) | (Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoallanite-(La) | (CaLa)(V3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'Unnamed (Mg-analogue of Ferriallanite-(Ce))' | (CaCe)(Fe3+AlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriallanite-(La) | (CaLa)(Fe3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Uedaite-(Ce) | (Mn2+Ce)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Tweddillite | (CaSr)(Mn3+AlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Åskagenite-(Nd) | (Mn2+Nd)(AlAlFe3+)O[Si2O7][SiO4]O |
| 9.BG.05 | Piemontite-(Pb) | (CaPb)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(La) | (CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Y) | (CaY)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Akasakaite-(Ce) | (CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Manganiandrosite-(La) | (Mn2+La)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Akasakaite-(La) | (CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoakasakaite-(La) | (CaLa)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Khristovite-(Ce) | (CaCe)(MgAlMn2+)F[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriakasakaite-(La) | (CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Ferriandrosite-(La) | (Mn2+La)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | 'Androsite-(Ce)' | (Mn2+Ce)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Vielleaureite-(Ce) | Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH) |
| 9.BG.05 | Ferriandrosite-(Ce) | (Mn2+Ce)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriallanite-(Ce) | (CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))' | (CaCe)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoakasakaite-(Ce) | (CaCe)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Piemontite-(Sr) | (CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Niigataite | (CaSr)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriakasakaite-(Ce) | (CaCe)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoandrosite-(La) | Mn2+La(V3+AlMn2+)(Si2O7)(SiO4)O(OH) |
| 9.BG.05b | Allanite-(Nd) | (CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'UM1989-32-SiO:AlCaFeHREE' | (Ca0.5◻0.5REE)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Mukhinite | (CaCa)(AlAlV3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Manganiakasakaite-(La) | (CaLa)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.10 | Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG.15 | Macfallite | Ca2Mn3+3(SiO4)(Si2O7)(OH)3 |
| 9.BG.15 | Sursassite | Mn2+2Al3(SiO4)(Si2O7)(OH)3 |
| 9.BG.20 | Pumpellyite-(Al) | Ca2AlAl2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Shuiskite-(Mg) | Ca2MgCr3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Julgoldite-(Fe2+) | Ca2Fe2+Fe3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Okhotskite | Ca2Mn2+Mn3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Julgoldite-(Mg) | Ca2MgFe3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Poppiite | Ca2V3+V3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Julgoldite-(Fe3+) | Ca2Fe3+Fe3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Pumpellyite-(Fe2+) | Ca2Fe2+Al2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Pumpellyite-(Fe3+) | Ca2Fe3+Al2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Pumpellyite-(Mn2+) | Ca2Mn2+Al2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.25 | Ganomalite | Pb9Ca5Mn(Si2O7)4(SiO4)O |
| 9.BG.25 | Wayneburnhamite | Pb9Ca6(Si2O7)3(SiO4)3 |
| 9.BG.30 | Rustumite | Ca10(Si2O7)2(SiO4)(OH)2Cl2 |
| 9.BG.35 | Modraite | Ca19Fe2+Al4(Al6Fe2+2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Fluorvesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(F,OH)9 |
| 9.BG.35 | Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG.35 | Milanriederite | (Ca18[REE])Fe3+Al4(Mg4Al4)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Manaevite-(Ce) | (Ca13Ce4[H2O]2)Mg(Al3Mg)(Mg3Ti3Fe3+2)(◻4)◻[Si2O7]4[(SiO4)8(H4O4)2]O(OH)9 |
| 9.BG.35 | Hongheite | Ca19Fe2+Al4(Fe3+,Mg)8(◻4)B[Si2O7]4[(SiO4)10]O(OH,O)9 |
| 9.BG.35 | Wiluite | Ca19MgAl4(Al,Mg)8(B,◻)4◻[Si2O7]4[(SiO4)10]O(O,OH)9 |
| 9.BG.35 | Cyprine | Ca19Cu2+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Manganvesuvianite | Ca19Mn3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG.40 | Vyuntspakhkite-(Y) | (Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7 |
| 9.BG.45 | Dellaite | Ca6Si3O11(OH)2 |
| 9.BG.50 | Ferriperbøeite-(Ce) | CaCe3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Perbøeite-(La) | CaLa3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Perbøeite-(Ce) | CaCe3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Gatelite-(Ce) | CaCe3(AlAl2Mg)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Ferriperbøeite-(La) | CaLa3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.55 | Västmanlandite-(Ce) | CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2 |
| 9.BG.60 | Radekškodaite-(La) | (CaLa5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3 |
| 9.BG.60 | Radekškodaite-(Ce) | (CaCe5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3 |
Other Information
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 Alnaperbøeite-(Ce)
mindat.org URL:
https://www.mindat.org/min-43577.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Alnaperbøeite-(Ce)
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) IMA Commission on New Minerals, Nomenclature and Classification. CNMNC Newsletter No. 15. Mineralogical Magazine, 77 (1) 1-12 doi:10.1180/minmag.2013.077.1.01
Bonazzi, P., Lepore, G. O., Bindi, L., Chopin, C., Husdal, T. A., Medenbach, O. (2014) Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-tornebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member. American Mineralogist, 99 (1) 157-169 doi:10.2138/am.2014.4593
Localities for Alnaperbøeite-(Ce)
Showing 1 localities.
Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Norway (TL) | |
| Williams et al. (2013) +2 other references |
Quick NavTopName EncodingUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsStrunz-MindatOther InformationInternet Links References Localities Locality List
symbol to view information about a locality.
The