Natrodufrénite
A valid IMA mineral species
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About Natrodufrénite
Formula:
NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Colour:
Greenish brown
Hardness:
3½ - 4½
Specific Gravity:
3.20
Crystal System:
Monoclinic
Member of:
Name:
For being the Na analogue of dufrénite.
Isostructural with:
Unique Identifiers
Mindat ID:
2854
Long-form identifier:
mindat:1:1:2854:3
GUID
(UUID V4):
(UUID V4):
7d38a435-25c1-49bf-9029-019b6ba44b41
IMA Classification of Natrodufrénite
Approved
Approval year:
1981
First published:
1982
Type description reference:
Fontan, François, Pillard, François, Permingeat, François, Fontan, François, Pillard, François, Permingeat, François (1982) La natrodufrénite (Na,◻) (Fe+++,Fe++) (Fe+++,Al)5(PO4)4(OH)6 • 2H2O, une nouvelle espèce minérale du groupe de la dufrénite. Bulletin de Minéralogie, 105 (4) 321-326 doi:10.3406/bulmi.1982.7623
Classification of Natrodufrénite
8.DK.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
K : With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
K : With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
42.9.1.3
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
19.14.6
19 : Phosphates
14 : Phosphates of Fe and other metals
19 : Phosphates
14 : Phosphates of Fe and other metals
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 |
---|---|---|
Ndf | 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 Natrodufrénite
Transparency:
Translucent
Colour:
Greenish brown
Streak:
Green
Hardness:
3½ - 4½ on Mohs scale
Tenacity:
Brittle
Density:
3.20(3) g/cm3 (Measured) 3.23 g/cm3 (Calculated)
Optical Data of Natrodufrénite
Type:
Biaxial (+)
RI values:
nα = 1.756 nγ = 1.775
Max Birefringence:
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
distinct to strong
Pleochroism:
Visible
Comments:
X = pale yellow; Z = dark green.
Chemistry of Natrodufrénite
Mindat Formula:
NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Crystallography of Natrodufrénite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 25.83(2) Å, b = 5.150(3) Å, c = 13.772(9) Å
β = 111.53°
β = 111.53°
Ratio:
a:b:c = 5.016 : 1 : 2.674
Unit Cell V:
1,704.19 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Radially fibrous spherulites, to 5 mm, may be in warty nodules.
Comment:
By analogy to dufrénite.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
12.04 Å | (80) |
5.040 Å | (60) |
4.124 Å | (50) |
3.400 Å | (80) |
3.204 Å | (80) |
3.152 Å | (100) |
2.989 Å | (50) |
Comments:
Close to dufrénite.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Natrodufrénite
General Appearance of Type Material:
Blue-green spheres of compact radiating fibers up to 0.5 cm in diameter.
Place of Conservation of Type Material:
Natural History Museum, Paris, France, 106384, 106385.
National School of Mines, Paris, France, 18329.
National School of Mines, Paris, France, 18329.
Geological Setting of Type Material:
Limonitic ore bed; formed by low temperature, supergene alteration.
Associated Minerals at Type Locality:
Reference:
Fontan, F., Pillard, F., Permingeat, F. (1982) La natrodufrénite (Na,▯)(Fe+++,Fe++)(Fe+++,Al)5(PO4)4(OH)6.2H2O, une nouvelle espèce minérale du groupe de la dufrénite. Bulletin de Minéralogie, 105, 321-326.
Synonyms of Natrodufrénite
Other Language Names for Natrodufrénite
German:Natrodufrenit
Spanish:Natrodufrenita
Relationship of Natrodufrénite to other Species
Member of:
Other Members of this group:
Bimbowrieite | NaMgFe3+5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
Burangaite | NaFe2+Al5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
Dufrénite | Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
Gayite | NaMn2+Fe3+5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
Matioliite | NaMgAl5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
26 photos of Natrodufrénite associated with Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
19 photos of Natrodufrénite associated with Kidwellite | NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33 |
13 photos of Natrodufrénite associated with Strengite | FePO4 · 2H2O |
12 photos of Natrodufrénite associated with Leucophosphite | KFe3+2(PO4)2(OH) · 2H2O |
10 photos of Natrodufrénite associated with Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
7 photos of Natrodufrénite associated with Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
6 photos of Natrodufrénite associated with Quartz | SiO2 |
3 photos of Natrodufrénite associated with Kapundaite | NaCaFe4(PO4)4(OH)3 · 5H2O |
2 photos of Natrodufrénite associated with Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
2 photos of Natrodufrénite associated with Xanthoxenite | Ca4Fe3+2(PO4)4(OH)2 · 3H2O |
Related Minerals - Strunz-mindat Grouping
8.DK. | Richelsdorfite | Ca2Cu5Sb(AsO4)4(OH)6Cl · 6H2O |
8.DK. | Bimbowrieite | NaMgFe3+5(PO4)4(OH)6 · 2H2O |
8.DK. | Puttapaite | Pb2Mn2+2ZnCr3+4O2(AsO4)4(OH)6 · 12H2O |
8.DK.10 | Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
8.DK.10 | Pharmacosiderite | KFe3+4(AsO4)3(OH)4 · 6-7H2O |
8.DK.10 | Natropharmacosiderite | NaFe3+4(AsO4)3(OH)4 · 4H2O |
8.DK.10 | Hydroniumpharmacosiderite | (H3O)Fe4(AsO4)3(OH)4 · 4H2O |
8.DK.10 | Strontiopharmacosiderite | Sr0.5Fe4[(AsO4)3(OH)4] · 4H2O |
8.DK.10 | Thalliumpharmacosiderite | TlFe4[(AsO4)3(OH)4] · 4H2O |
8.DK.10 | Plumbopharmacosiderite | Pb0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
8.DK.12 | Pharmacoalumite | KAl4(AsO4)3(OH)4 · 6.5H2O |
8.DK.12 | Natropharmacoalumite | NaAl4(AsO4)3(OH)4 · 4H2O |
8.DK.12 | Bariopharmacoalumite | Ba0.5Al4(AsO4)3(OH)4 · 4H2O |
8.DK.12 | Hydroniumpharmacoalumite | (H3O)Al4(AsO4)3(OH)4 · 4.5H2O |
8.DK.15 | Burangaite | NaFe2+Al5(PO4)4(OH)6 · 2H2O |
8.DK.15 | Dufrénite | Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O |
8.DK.15 | Matioliite | NaMgAl5(PO4)4(OH)6 · 2H2O |
8.DK.15 | Gayite | NaMn2+Fe3+5(PO4)4(OH)6 · 2H2O |
8.DK.20 | Kidwellite | NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33 |
8.DK.25 | Bleasdaleite | (Ca,Fe3+)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13 |
8.DK.30 | Matulaite | (Fe3+,Al)Al7(PO4)4(PO3OH)2(OH)8(H2O)8 · 8H2O |
8.DK.35 | Krasnovite | Ba(Al,Mg)(PO4,CO3)(OH)2 · H2O |
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 Natrodufrénite
mindat.org URL:
https://www.mindat.org/min-2854.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Natrodufrénite
Reference List:
Fontan, François, Pillard, François, Permingeat, François, Fontan, François, Pillard, François, Permingeat, François (1982) La natrodufrénite (Na,◻) (Fe+++,Fe++) (Fe+++,Al)5(PO4)4(OH)6 • 2H2O, une nouvelle espèce minérale du groupe de la dufrénite. Bulletin de Minéralogie, 105 (4) 321-326 doi:10.3406/bulmi.1982.7623
Localities for Natrodufrénite
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).
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.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Kampf et al. (2010) |
Australia | |
| Birch et al. (1997) |
Day (1998) | |
| Day et al. (1996) |
| Derrick |
| Peter Elliott |
| |
Vince Peisley specimen | |
| Peter Elliott |
| Australian Journal of Mineralogy |
Australian Journal of Mineralogy | |
| |
| P. Sutton (2007) |
| Birch (1996) |
Austria | |
| Brandstätter et al. (1990) +1 other reference |
Brazil | |
| Sergio Varvello collection |
| Sergio Varvello collection |
Chile | |
| XRD by Gerhard Möhn |
| maurizio dini collection - analysed ... |
| maurizio dini collection - analysed ... |
| Sulphides analysed by geology dep. of ... +1 other reference |
Czech Republic | |
| Sejkora et al. (2006) |
Sejkora et al. (2006) | |
| Sejkora |
| Škoda |
| Sejkora J. et al. (Česká republika) |
| Vrtiška L et al. (2017) |
| Škoda +1 other reference |
France | |
| Yannick Vessely collection - SEM-EDS ... |
| Uwe Kolitsch (SXRD + SEM-EDS) |
Boisson et al. (2000) +1 other reference | |
| Pierre Le Roch & Jean-Marc Johannet ... |
| Bull.Mineral. (1982) |
| Jean-Marc Johannet collection (unpublished SEM-EDS analyses by Vincent Bourgouin) |
| Gayraud et al. (2011) |
Germany | |
| Collected by Hans-Peter Maaßen +1 other reference |
| Blaß (2002) |
| Hucko (2010) |
| SEM-EDS |
| Wittern (2001) |
Hungary | |
| collector: Regina Körmendy |
Italy | |
| Bruno Marello collection |
Marco Ciriotti 2010 | |
Balestra C. (2009) | |
Morocco | |
| Favreau (2012) |
Portugal | |
| Pedro Alves collection and analytical ... |
| Identified in Rebentão Mine |
| Nuno Afonso collection |
Spain | |
| www.foro-minerales.com (2022) |
www.foro-minerales.com (2022) +1 other reference | |
| Roda-Robles et al. (1998) |
| Viñals et al. (2011) |
USA | |
| Henry Barwood |
Henry Barwood | |
| Grant et al. (2005) |
| Silver Coin Mine. Compact Disc. Paul ... |
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Augusta Ridge phosphate locality, Cherokee County, Alabama, USA