Ferronigerite-2N1S
A valid IMA mineral species - grandfathered
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About Ferronigerite-2N1S
Flag of Nigeria
Formula:
(Al,Fe,Zn)2(Al,Sn)6O11(OH)
Colour:
Brown
Hardness:
8 - 9
Specific Gravity:
4.51
Crystal System:
Trigonal
Member of:
Name:
Originally named nigerite, for the type locality in Nigeria. Renamed according to the new nigerite group nomenclature as Fe dominant mineral and the 2N1S polysome.
Type Locality:
Visit gemdat.org for Unique Identifiers
Mindat ID:
2903
Long-form identifier:
mindat:1:1:2903:8
GUID
(UUID V4):
(UUID V4):
33e26382-61dd-4dec-b0f4-524395836265
IMA Classification of Ferronigerite-2N1S
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
First published:
1947
Approval history:
IMA Case 01–A - Renamed from nigerite-6T.
Classification of Ferronigerite-2N1S
4.FC.20
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
C : Hydroxides with OH, without H2O; corner-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
C : Hydroxides with OH, without H2O; corner-sharing octahedra
7.11.8.2
7 : MULTIPLE OXIDES
11 : Miscellaneous
7 : MULTIPLE OXIDES
11 : Miscellaneous
7.11.12
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
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 |
|---|---|---|
| Fng-2N1S | 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 Ferronigerite-2N1S
Comment:
'Lustrous', 'brilliantly reflecting basal plane'.
Colour:
Brown
Hardness:
8 - 9 on Mohs scale
Tenacity:
Brittle
Density:
4.51 g/cm3 (Measured)
Chemistry of Ferronigerite-2N1S
Mindat Formula:
(Al,Fe,Zn)2(Al,Sn)6O11(OH)
Crystallography of Ferronigerite-2N1S
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 5.72 Å, c = 13.69 Å
Ratio:
a:c = 1 : 2.393
Unit Cell V:
387.91 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0018796 | Ferronigerite-2N1S | Arakcheeva A V, Pushcharovskii D Y, Rastsvetaeva R K, Kashaev A A, Nadezhina T N (1995) Crystal structure of nigerite-6H Kristallografiya 40 639-644 | 1995 | Eastern Siberia, Irkutsk, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.83 Å | (very strong) |
| 2.42 Å | (very strong) |
| 1.644 Å | (strong) |
| 1.541 Å | (strong) |
| 4.64 Å | (medium strong) |
| 1.430 Å | (medium strong) |
| 1.413 Å | (medium strong) |
Comments:
Egbe district, Nigeria. The data are from Bannister et al. 1947.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
| 19 : Granitic intrusive rocks | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Ferronigerite-2N1S
General Appearance of Type Material:
Intergrowths and coatings on gahnite. Also as isolated brown hexagonal plates up to 5 X 2 mm.
Place of Conservation of Type Material:
Muséum Nationale d’Histoire Naturelle, Paris, France, 153.44 and 178.163 (type).
Natural History Museum, London, United Kingdom, number BM 1947,392 (type).
Natural History Museum, London, United Kingdom, number BM 1947,392 (type).
Geological Setting of Type Material:
Quartz-sillimanite-rocks associated with tin-bearing pegmatites.
Associated Minerals at Type Locality:
Synonyms of Ferronigerite-2N1S
Ferronigerite (in part)
Other Language Names for Ferronigerite-2N1S
Relationship of Ferronigerite-2N1S to other Species
Member of:
Other Members of this group:
| Ferronigerite-6N6S | (Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH) | Trig. 3m (3 2/m) : R3m |
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Ferronigerite-2N1S associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 1 photo of Ferronigerite-2N1S associated with Gahnite | ZnAl2O4 |
| 1 photo of Ferronigerite-2N1S associated with Högbomite | (Mg,Fe)2(Al,Ti)5O10 |
| 1 photo of Ferronigerite-2N1S associated with Microcline | K(AlSi3O8) |
| 1 photo of Ferronigerite-2N1S associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 4.FC.05 | Bernalite | Fe(OH)3 · nH2O (n = 0.0 to 0.25) |
| 4.FC.05 | Dzhalindite | In(OH)3 |
| 4.FC.05 | Söhngeite | Ga(OH)3 |
| 4.FC.10 | Burtite | Ca[Sn(OH)6] |
| 4.FC.10 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] |
| 4.FC.10 | Natanite | Fe2+[Sn(OH)6] |
| 4.FC.10 | Schoenfliesite | Mg[Sn(OH)6] |
| 4.FC.10 | Vismirnovite | Zn[Sn(OH)6] |
| 4.FC.10 | Wickmanite | Mn2+[Sn(OH)6] |
| 4.FC.15 | Jeanbandyite | Fe3+xFe2+1-xSn(OH)6-xOx |
| 4.FC.15 | Mopungite | Na[Sb5+(OH)6] |
| 4.FC.15 | Stottite | Fe2+[Ge4+(OH)6] |
| 4.FC.15 | Tetrawickmanite | Mn2+[Sn4+(OH)6] |
| 4.FC.20 | Magnesionigerite-6N6S | (Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH) |
| 4.FC.20 | Magnesionigerite-2N1S | (Mg,Al,Zn)2(Al,Sn)6O11(OH) |
| 4.FC.20 | Ferronigerite-6N6S | (Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH) |
| 4.FC.20 | Zinconigerite-2N1S | (Zn,Al,Mg)2(Al,Sn)6O11(OH) |
| 4.FC.20 | Zinconigerite-6N6S | Zn3Sn2Al16O30(OH)2 |
| 4.FC.25 | Magnesiotaaffeite-6N’3S | Mg2BeAl6O12 |
| 4.FC.25 | Magnesiotaaffeite-2N’2S | Mg3Al8BeO16 |
| 4.FC.25 | Ferrotaaffeite-2N’2S | Be(Fe,Mg,Zn)3Al8O16 |
Other Information
Thermal Behaviour:
Very imperfectly attacked by fusion with sodium carbonate or caustic soda, but readily gives a clear fusion with borax and with sodium pyrosulphate.
Notes:
Weakly magnetic. Insoluble in acids.
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 Ferronigerite-2N1S
mindat.org URL:
https://www.mindat.org/min-2903.html
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References for Ferronigerite-2N1S
Reference List:
Localities for Ferronigerite-2N1S
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.
Canada | |
| Tindle et al. (2002) |
| Spry (1983) |
China | |
| Yihong Sun and Xiangmei Ren (1986) +1 other reference |
Czech Republic | |
| Čech et al. (1978) |
Finland | |
| Mattila |
Namibia | |
| - (n.d.) |
| Ernst A. Schnaitmann |
| von Bezing (2007) | |
| The-Vug.com Quarterly Magazine V4 #4 pg ... +1 other reference |
Nigeria (TL) | |
| Mineralogical Magazine (1947) |
Poland | |
| Pieczka et al. (2018) |
Portugal | |
| Maijer 1965 |
| Van Tassel (1965) |
| Pedro Alves collection and analytical ... | |
| Neiva et al. (1997) |
| Novák (2009) |
Sweden | |
| Schumacher et al. (1987) |
Ukraine | |
| Kurylo et al. (2022) |
USA | |
| Bell (2006) |
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Tapada da Bemposta No.1 Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal