Log In
Suenoite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
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
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
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 |
Quick NavTopUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesRelationshipsStrunz-MindatOther InformationInternet Links References Localities Locality List
