Suenoite
A valid IMA mineral species
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Shigeho Sueno
Formula:
◻Mn2+2Mg5Si8O22(OH)2
Colour:
colorless
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
3.283 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
For Shigeho Sueno (1937 – March 11, 2001 Tsukuba, Japan), late professor of mineralogy at the University of Tsukuba, Japan, who described protomangano-ferro-anthophyllite.
The lack of any structural prefix (proto- or clino-) refers to the anthophyllite-like orthoamphibole structure with space group Pnma.
Unique Identifiers
Mindat ID:
54037
Long-form identifier:
mindat:1:1:54037:3
Similar Names
IMA Classification of Suenoite
Approved
Type description reference:
Classification of Suenoite
9.DD.05
9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
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 |
|---|---|---|
| Sue | 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 Suenoite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{210}
{210}
Fracture:
Irregular/Uneven
Density:
3.283 g/cm3 (Calculated)
Optical Data of Suenoite
Type:
Biaxial (+)
RI values:
nα = 1.655(5) nβ = 1.660 - 5 nγ = 1.670(5)
2V:
Measured: 75° (10), Calculated: 70.9°
Max. Birefringence:
δ = 0.015
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
Orientation:
X=a, Y=b, and Z=c
Pleochroism:
Non-pleochroic
Comments:
suenoite is colourless
Chemistry of Suenoite
Mindat Formula:
◻Mn2+2Mg5Si8O22(OH)2
Element Weights:
Crystallography of Suenoite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 18.7508(12) Å, b = 18.1396(12) Å, c = 5.3173(3) Å
Ratio:
a:b:c = 1.034 : 1 : 0.293
Unit Cell V:
1,808.58 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.1 Å | (m) |
| 8.4 Å | (s) |
| 3.263 Å | (s) |
| 3.085 Å | (vs) |
| 2.851 Å | (m) |
| 2.727 Å | (m) |
| 2.615 Å | (m) |
| 2.537 Å | (m) |
Reference:
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Suenoite
General Appearance of Type Material:
tabular striated crystals, up to 0.1 mm in length
Place of Conservation of Type Material:
mineralogical collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (Pisa), Italy, catalogue number 19891
Geological Setting of Type Material:
recrystallisation of the Scortico–Ravazzone Mn ore deposit during the Tertiary tectono-metamorphic events, under greenschist-facies conditions
Associated Minerals at Type Locality:
Reference:
Other Language Names for Suenoite
Relationship of Suenoite to other Species
Member of:
Other Members of Suenoite Root Name Group:
| Clino-ferro-suenoite | ◻Mn2+2(Fe2+5)(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| Clino-suenoite | ◻Mn2+2(Mg5)(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| Proto-ferro-suenoite | ◻Mn2+2(Fe2+5)(Si8O22)(OH)2 | Orth. mmm(2/m2/m2/m) |
Related Minerals - Strunz-mindat Grouping
| 9.DD.05 | Proto-ferro-anthophyllite | ◻Fe2+2Fe2+5(Si8O22)(OH)2 |
| 9.DD.05 | Proto-ferro-suenoite | ◻Mn2+2(Fe2+5)(Si8O22)(OH)2 |
| 9.DD.05 | Papikeite | NaMg2(Mg3Al2}(Al3Si5O22)(OH)2 |
| 9.DD.05 | Gedrite | ◻Mg2(Mg3Al2)(Al2Si6O22)(OH)2 |
| 9.DD.05 | Holmquistite | ◻Li2(Mg3Al2)(Si8O22)(OH)2 |
| 9.DD.05 | 'Sodic-anthophyllite' | {Na}{Mg2}{Mg5}(AlSi7O22)(OH)2 |
| 9.DD.05 | 'Sodic-ferro-anthophyllite' | NaFe2+2Fe2+5(AlSi7O22)(OH)2 |
| 9.DD.05 | Ferro-papikeite | NaFe2+2(Fe2+3Al2)(Si5Al3O22)(OH)2 |
| 9.DD.05 | Ferro-anthophyllite | ◻Fe2+2Fe2+5(Si8O22)(OH)2 |
| 9.DD.05 | Proto-anthophyllite | ◻Mg2Mg5(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-gedrite | ◻Fe2+2(Fe2+3Al2)(Al2Si6O22)(OH)2 |
| 9.DD.05 | 'Ferri-holmquistite' | ◻{Li2}{Mg3Fe3+2}(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-ferri-holmquistite | ◻Li2(Fe2+3Fe3+2)(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-holmquistite | ◻Li2(Fe2+3Al2)(Si8O22)(OH)2 |
| 9.DD.05 | Anthophyllite | ◻Mg2Mg5(Si8O22)(OH)2 |
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 Suenoite
mindat.org URL:
https://www.mindat.org/min-54037.html
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References for Suenoite
Localities for Suenoite
Showing 2 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.
Czech Republic | |
| PAULIŠ et al. (2022) |
Italy (TL) | |
| Miyawaki et al. (2019) +2 other references |
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