Magnesionigerite-2N1S
A valid IMA mineral species
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Formula:
(Mg,Al,Zn)2(Al,Sn)6O11(OH)
Colour:
Light yellowish brown to light yellow, colorless
Lustre:
Vitreous
Hardness:
8
Specific Gravity:
4.22
Crystal System:
Trigonal
Member of:
Name:
Originally described as pengzhizhongite-6H, renamed according to the new nigerite group nomenclature (Armbruster, 2002). The root name is for Nigeria.
Type Locality:
This page provides mineralogical data about Magnesionigerite-2N1S.
Unique Identifiers
Mindat ID:
11446
Long-form identifier:
mindat:1:1:11446:0
GUID
(UUID V4):
(UUID V4):
b7ac7fa5-a419-4158-8328-5fe73b2be355
IMA Classification of Magnesionigerite-2N1S
Approved
IMA status notes:
Renamed by the IMA
First published:
1989
Approval history:
IMA Case 01–A - Renamed from pengzhizhongite-6T.
Classification of Magnesionigerite-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
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 |
---|---|---|
Mgng-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 Magnesionigerite-2N1S
Vitreous
Transparency:
Transparent
Colour:
Light yellowish brown to light yellow, colorless
Streak:
White
Hardness:
8 on Mohs scale
Hardness Data:
Measured
Density:
4.22(3) g/cm3 (Measured) 4.16 g/cm3 (Calculated)
Optical Data of Magnesionigerite-2N1S
Type:
Uniaxial (+)
RI values:
nω = 1.802(2) nε = 1.814(2)
Max Birefringence:
δ = 0.012
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:
Very High
Chemistry of Magnesionigerite-2N1S
Mindat Formula:
(Mg,Al,Zn)2(Al,Sn)6O11(OH)
Crystallography of Magnesionigerite-2N1S
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 5.692(5) Å, c = 13.78(2) Å
Ratio:
a:c = 1 : 2.421
Unit Cell V:
386.64 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.423 Å | (100) |
2.846 Å | (90) |
1.414 Å | (50) |
1.545 Å | (40) |
1.639 Å | (30) |
2.624 Å | (20) |
1.842 Å | (20) |
Comments:
Baiwu mining district, Hunan, China. The data are from Chen et al. (1989).
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations |
Type Occurrence of Magnesionigerite-2N1S
General Appearance of Type Material:
Light yellowish brown to light yellow or colorless tabular crystals, 0.5-1.0 mm long, 0.4-0.8 mm wide, 0.02-0.2 mm thick.
Place of Conservation of Type Material:
China University of Geosciences, Beijing, China (type).
Geological Setting of Type Material:
Formed with high-temperature, metasomatic tungsten ore.
Associated Minerals at Type Locality:
Synonyms of Magnesionigerite-2N1S
Relationship of Magnesionigerite-2N1S to other Species
Member of:
Other Members of this group:
Magnesionigerite-6N6S | (Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH) | Trig. 3m (3 2/m) : R3m |
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 | 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 | 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
Notes:
Insoluble in hot HCl or hot HNO3.
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 Magnesionigerite-2N1S
mindat.org URL:
https://www.mindat.org/min-11446.html
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References for Magnesionigerite-2N1S
Reference List:
Localities for Magnesionigerite-2N1S
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.
China (TL) | |
| Chen Jingzhong et al. (1989) +1 other reference |
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