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Ferrotaaffeite-2Nā2S
A valid IMA mineral species
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About Ferrotaaffeite-2Nā2S
Formula:
Be(Fe,Mg,Zn)3Al8O16
Colour:
dark green to dark grey
Lustre:
Vitreous
Hardness:
8½ - 9
Specific Gravity:
3.99 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
For the mineral taaffeite and its iron content.
This page provides mineralogical data about Ferrotaaffeite-2Nā2S.
Name Encoding
Formatted:
ferrotaaffeite-2Nā2S
HTML:
ferrotaaffeite-2<i>N</i>’2<i>S</i>
LaTeX:
ferrotaaffeite-2\textit{N}ā2\textit{S}
Latin-1:
Ferrotaaffeite-2N'2S
ASCII-7:
Ferrotaaffeite-2N'2S
Unique Identifiers
Mindat ID:
42821
Long-form identifier:
mindat:1:1:42821:1
Similar Names
| Ferrotaaffeite-6N'3S | A valid IMA mineral species | (Be,Zn,Mg)FeAl4O8 |
IMA Classification of Ferrotaaffeite-2Nā2S
Classification of Ferrotaaffeite-2Nā2S
4.FC.25
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
Mineral Symbols
As of 2021 there are now IMAāCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ftf-2N'2S | IMAāCNMNC | Warr, L.N. (2021). IMAāCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ferrotaaffeite-2Nā2S
Vitreous
Transparency:
Transparent
Colour:
dark green to dark grey
Streak:
White
Hardness:
8½ - 9 on Mohs scale
Hardness:
VHN50= 2107 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
{001}
{001}
Fracture:
Conchoidal
Density:
3.99 g/cm3 (Calculated)
Chemistry of Ferrotaaffeite-2Nā2S
Mindat Formula:
Be(Fe,Mg,Zn)3Al8O16
Element Weights:
Crystallography of Ferrotaaffeite-2Nā2S
Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Cell Parameters:
a = 5.706(8) Å, c = 18.352(3) Å
Ratio:
a:c = 1 : 3.216
Unit Cell V:
517.46 Ć
Ā³ (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.86 Ć | (80) |
| 2.60 Ć | (90) |
| 2.43 Ć | (100) |
| 2.05 Ć | (70) |
| 1.595 Ć | (70) |
| 1.473 Ć | (80) |
| 1.425 Ć | (90) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Ferrotaaffeite-2Nā2S
General Appearance of Type Material:
tabular crystals to a size of about 100 Ī¼m
Place of Conservation of Type Material:
Museum of the Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing, registration number KDX017
Geological Setting of Type Material:
Tin deposit outside of a granite contact
Associated Minerals at Type Locality:
Synonyms of Ferrotaaffeite-2Nā2S
Other Language Names for Ferrotaaffeite-2Nā2S
Dutch:Ferrotaaffeiet-2Nā2S
German:Ferrotaaffeit-2Nā2S
Relationship of Ferrotaaffeite-2Nā2S to other Species
Member of:
Other Members of Ferrotaaffeite subgroup:
| Ferrotaaffeite-6N'3S | (Be,Zn,Mg)FeAl4O8 | Trig. 3m(32/m) : R3m |
Common Associates
Associations Based on Photo Data:
| 1 photo of Ferrotaaffeite-2Nā2S associated with Ferrotaaffeite subgroup |
Related Minerals - Strunz-mindat Grouping
| 4.FC.05 | Dzhalindite | In(OH)3 |
| 4.FC.05 | Bernalite | Fe(OH)3 Ā· nH2O (n = 0.0 to 0.25) |
| 4.FC.05 | Sƶhngeite | Ga(OH)3 |
| 4.FC.10 | Mushistonite | (Cu,Zn,Fe2+)[Sn(OH)6] |
| 4.FC.10 | Natanite | Fe2+[Sn(OH)6] |
| 4.FC.10 | Burtite | Ca[Sn(OH)6] |
| 4.FC.10 | Vismirnovite | Zn[Sn(OH)6] |
| 4.FC.10 | Wickmanite | Mn2+[Sn(OH)6] |
| 4.FC.10 | Schoenfliesite | Mg[Sn(OH)6] |
| 4.FC.15 | Jeanbandyite | Fe3+Sn(OH)5O |
| 4.FC.15 | Tetrawickmanite | Mn2+[Sn4+(OH)6] |
| 4.FC.15 | Nancyrossite | FeGeO6H5 |
| 4.FC.15 | Zincostottite | ZnGe(OH)6 |
| 4.FC.15 | Stottite | Fe2+[Ge4+(OH)6] |
| 4.FC.15 | Mopungite | Na[Sb5+(OH)6] |
| 4.FC.20 | Ferronigerite-2N1S | (Al,Fe,Zn)2(Al,Sn)6O11(OH) |
| 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-6Nā3S | Mg2BeAl6O12 |
| 4.FC.25 | Magnesiotaaffeite-2Nā2S | Mg3Al8BeO16 |
Fluorescence of Ferrotaaffeite-2Nā2S
none
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 Ferrotaaffeite-2Nā2S
mindat.org URL:
https://www.mindat.org/min-42821.html
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References for Ferrotaaffeite-2Nā2S
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. Mineralogical Magazine, 75 (5) 2549-2561 doi:10.1180/minmag.2011.075.5.2549
Yang, Z., Ding, K., De Fourestier, J., Mao, Q., Li, H. (2012) Ferrotaaffeite-2N'2S, a new mineral species, and the crystal structure of Fe2+-rich magnesiotaaffeite-2N'2S from the Xianghualing tin-polymetallic ore field, Hunan Province, China. The Canadian Mineralogist, 50 (1) 21-29 doi:10.3749/canmin.50.1.21
Localities for Ferrotaaffeite-2Nā2S
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ā - 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.
China (TL) | |
| Williams et al. (2011) +1 other reference |
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Xianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China