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Arrojadite-(PbFe)
A valid IMA mineral species
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About Arrojadite-(PbFe)
Formula:
(Pb◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
Colour:
Pale honey
Lustre:
Vitreous
Specific Gravity:
3.596 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
For Miguel Arrojado Lisbôa, Brazilian geologist and Redefinition after the new arrojadite nomenclature (CNMMN 05-D, October 2005).
Unique combination of elements (as of 2023).
Unique Identifiers
Mindat ID:
29064
Long-form identifier:
mindat:1:1:29064:5
Similar Names
| Arrojadite | A synonym of Arrojadite Group | |
| Arrojadite (of Mason) | A synonym of Hagendorfite | |
| Arrojadite-(BaFe) | A synonym of Sigismundite | |
| Arrojadite-(BaNa) | A valid IMA mineral species | (Ba◻)(NaNa)Ca(Na2◻)Fe132+Al(PO4)11(PO3OH)(OH)2 |
| Arrojadite-(KFe) | A valid IMA mineral species - grandfathered | (KNa)(Fe2+◻)Ca(Na2◻)Fe132+Al(PO4)11(PO3OH)(OH)2 |
| Arrojadite-(KFe)-Dickinsonite-(KMnNa) Series | A solid-solution series between two end-member minerals | |
| Arrojadite-(KFeNa) | (KNa)(Fe2+◻)Ca(Na2Na)Fe132+Al(PO4)11(PO4)(OH)2 | |
| Arrojadite-(KNa) | A valid IMA mineral species | (KNa)(NaNa)Ca(Na2◻)Fe132+Al(PO4)11(PO3OH)(OH)2 |
| Arrojadite-(NaFe) | (NaNa)(Fe2+◻)Ca(Na2◻)Fe132+Al(PO4)11(PO3OH)(OH)2 | |
| Arrojadite-(SrFe) | A valid IMA mineral species | (Sr◻)(Fe2+◻)Ca(Na2◻)Fe132+Al(PO4)11(PO3OH)(OH)2 |
IMA Classification of Arrojadite-(PbFe)
Approved
IMA Formula:
PbFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2
Approval year:
2006
First published:
2006
Classification of Arrojadite-(PbFe)
8.BF.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
F : With medium-sized and large cations, (OH, etc.):RO4< 0.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
F : With medium-sized and large cations, (OH, etc.):RO4< 0.5:1
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 |
|---|---|---|
| Ajd-PbFe | 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 Arrojadite-(PbFe)
Vitreous
Transparency:
Transparent
Colour:
Pale honey
Streak:
White
Density:
3.596 g/cm3 (Calculated)
Optical Data of Arrojadite-(PbFe)
Type:
Biaxial (+)
RI values:
nα = 1.6585(5) nβ = 1.6600(5) nγ = 1.6680(5)
2V:
Measured: 58.2° (1), Calculated: 47°
Max. Birefringence:
δ = 0.010
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.
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.
Surface Relief:
Moderate
Dispersion:
r > v.
Optical Extinction:
x = b.
Pleochroism:
Not Visible
Chemistry of Arrojadite-(PbFe)
Mindat Formula:
(Pb◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
Element Weights:
Crystallography of Arrojadite-(PbFe)
Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bb
Cell Parameters:
a = 16.4304(9) Å, b = 9.9745(5) Å, c = 24.5869(13) Å
β = 105.485°
β = 105.485°
Ratio:
a:b:c = 1.647 : 1 : 2.465
Unit Cell V:
3,883.16 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.208 Å | (43) |
| 3.019 Å | (100) |
| 2.829 Å | (35) |
| 2.820 Å | (33) |
| 2.750 Å | (29) |
| 2.698 Å | (55) |
| 2.694 Å | (32) |
| 2.538 Å | (30) |
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 Arrojadite-(PbFe)
General Appearance of Type Material:
Clear, up to millimeter-sized anhedral, corroded, isolated crystals in a groundmass of triphylite with some chloritized biotite and albite.
Place of Conservation of Type Material:
Ecole Nationale Supérieure des Mines, Paris, France, 32088.
Geological Setting of Type Material:
Granite pegmatite.
Associated Minerals at Type Locality:
Synonyms of Arrojadite-(PbFe)
Other Language Names for Arrojadite-(PbFe)
Dutch:Arrojadiet-(PbFe)
French:Arrojadite-(PbFe)
German:Arrojadit-(PbFe)
Norwegian:Arrojaditt-(PbFe)
Russian:Арроядит-(PbFe)
Relationship of Arrojadite-(PbFe) to other Species
Member of:
Other Members of Arrojadite Group:
| Arrojadite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. 2/m : B2/b |
| Arrojadite-(KFe) | (KNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. m : Bb |
| 'Arrojadite-(KFeNa)' | (KNa)(Fe2+◻)Ca(Na2Na)Fe2+13Al(PO4)11(PO4)(OH)2 | |
| Arrojadite-(KNa) | (KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. m : Bb |
| 'Arrojadite-(NaFe)' | (NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | |
| Arrojadite-(SrFe) | (Sr◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. m : Bb |
| Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2 | Mon. 2/m : B2/b |
| 'Ferri-arrojadite-(BaNa)' | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Fe3+(PO4)11(PO3OH)(OH)2 | |
| Fluorarrojadite-(BaFe) | (Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 | Mon. m : Bb |
| Fluorarrojadite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 | Mon. m : Bb |
| 'Fluorarrojadite-(KNa)' | (KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 | |
| 'Fluorarrojadite-(NaFe)' | (NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 | |
| Fluorcarmoite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Mg13Al(PO4)11(PO3OH)F2 | Mon. m : Bb |
| Manganoarrojadite-(KNa) | (KNa)(NaNa)Mn2+(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. m : Bb |
| Sigismundite | (Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 | Mon. m : Bb |
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.BF. | Manganoarrojadite-(KNa) | (KNa)(NaNa)Mn2+(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF. | Sigismundite | (Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2 |
| 8.BF.05 | Arrojadite-(KNa) | (KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | Fluorarrojadite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 |
| 8.BF.05 | Arrojadite-(KFe) | (KNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | Fluorarrojadite-(BaFe) | (Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 |
| 8.BF.05 | 'Unnamed (Ba-dominant member of dickinsonite group)' | |
| 8.BF.05 | 'Unnamed (Pb-dominant member of dickinsonite group)' | |
| 8.BF.05 | Arrojadite-(SrFe) | (Sr◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | 'Arrojadite-(NaFe)' | (NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | Arrojadite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | 'Arrojadite-(KFeNa)' | (KNa)(Fe2+◻)Ca(Na2Na)Fe2+13Al(PO4)11(PO4)(OH)2 |
| 8.BF.05 | 'Ferri-arrojadite-(BaNa)' | (Ba◻)(NaNa)Ca(Na2◻)Fe2+13Fe3+(PO4)11(PO3OH)(OH)2 |
| 8.BF.05 | 'Fluorarrojadite-(KNa)' | (KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 |
| 8.BF.05 | 'Fluorarrojadite-(NaFe)' | (NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2 |
| 8.BF.05 | Fluorcarmoite-(BaNa) | (Ba◻)(NaNa)Ca(Na2◻)Mg13Al(PO4)11(PO3OH)F2 |
| 8.BF.10 | Samuelsonite | (Ca,Ba)Ca8Fe2+2Mn2+2Al2(PO4)10(OH)2 |
| 8.BF.15 | Griphite | Na4Li2Ca6(Mn2+,Fe2+,Mg)19Al8(PO4)24(F,OH)8 |
| 8.BF.20 | Nabiasite | BaMn9(VO4)6(OH)2 |
| 8.BF.25 | Starovaite | KCu5O(VO4)3 |
| 8.BF.30 | Achyrophanite | (K,Na)3(Fe3+,Ti,Al,Mg)5O2(AsO4)5 |
| 8.BF.35 | Cryptochalcite | K2Cu5O(SO4)5 |
| 8.BF.35 | Cesiodymite | CsKCu5O(SO4)5 |
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 Arrojadite-(PbFe)
mindat.org URL:
https://www.mindat.org/min-29064.html
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References for Arrojadite-(PbFe)
Reference List:
Camara, F. (2006) The arrojadite enigma: I. A new formula and a new model for the arrojadite structure. American Mineralogist, 91 (8) 1249-1259 doi:10.2138/am.2006.2189
Localities for Arrojadite-(PbFe)
Showing 1 localities.
symbol to view information about a locality.
The 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.
Brazil (TL) | |
| Chopin et al. (2006) |
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Sapucaia mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil