Tusionite (original) (raw)
A valid IMA mineral species
About TusioniteHide
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Colour:
Colourless, yellow-brown, honey yellow
Name:
Named after its discovery locality, Tusion River valley, Pamir Mountains, Tajikistan.
This page provides mineralogical data about Tusionite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:4062:0
ea1c406e-d54c-487c-9aab-ac8b23dac289
IMA Classification of TusioniteHide
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Classification of TusioniteHide
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6.AA.15
6 : BORATES
A : Monoborates
A : BO3, without additional anions; 1(D).
24.3.3.2
24 : ANHYDROUS BORATES
3 : AmBn[XO3]p
9.7.10
9 : Borates
7 : Borates of Mn
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Tsn | 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 TusioniteHide
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Colour:
Colourless, yellow-brown, honey yellow
Hardness:
VHN40=400 - 750 kg/mm2 - Vickers
Comment:
VH 400-500 on (001); 700-750 perpendicular to (001)
Density:
4.73 g/cm3 (Measured) 4.85 g/cm3 (Calculated)
Optical Data of TusioniteHide
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RI values:
_n_ω = 1.854(2) _n_ε = 1.752(2)
δ = 0.102
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Colour in reflected light:
grayish white
Chemistry of TusioniteHide
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Mindat Formula:
Mn2+Sn4+[BO3]2
Crystallography of TusioniteHide
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Class (H-M):
3 - Rhombohedral
Cell Parameters:
a = 4.781(1) Å, c = 15.381(7) Å
Unit Cell V:
304.48 ų (Calculated from Unit Cell)
Morphology:
Thin platy crystals, to 1.5 cm, in rosettelike aggregates.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005417 | Tusionite | Cooper M A, Hawthorne F C, Novak M (1994) The crystal structure of tusionite, MnSn(BO3)2, a dolomite-structure borate The Canadian Mineralogist 32 903-907 |  |
1994 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.12 Å | (4) |
| 4.02 Å | (4) |
| 3.65 Å | (9) |
| 2.818 Å | (10) |
| 2.393 Å | (6) |
| 1.999 Å | (6) |
| 1.744 Å | (8) |
Geological EnvironmentHide
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Geological Setting:
Boron-rich complex pegmatites of the elbaite subtype.
Type Occurrence of TusioniteHide
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General Appearance of Type Material:
Lamellar intergrowths up to 1.5 cm with tetrawickmanite and as small tabular crystals.
Place of Conservation of Type Material:
Mineralogical Museum, St. Petersburg University, St. Petersburg, Russia, 17096.
Mining Institute, St. Petersburg, Russia, 1661/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82546.
Geological Setting of Type Material:
Miarolitic granite pegmatite.
Associated Minerals at Type Locality:
Synonyms of TusioniteHide
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Other Language Names for TusioniteHide
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Varieties of TusioniteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of TusioniteHide
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Other InformationHide
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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 TusioniteHide
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References for TusioniteHide
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Reference List:
Konovalenko, S. I., Voloshin, A. V., Pakhomovskiy, Ya. A., Anen'yev, S. S., Perlina, G. A., Rogachev, D. L., Kuznetsov, V. Ya. (1984) Tusionite, MnSn(BO3)2, a new Borate from Granite Pegmatite of Southwestern Pamir. International Geology Review, 26 (4) 481-485 doi:10.1080/00206818409466576
Cooper, M., Hawthorne, F. C., Novák, M., Taylor, M. C. (1994) The crystal structure of tusionite, Mn2+Sn4+(BO3)2, a dolomite-structure borate. The Canadian Mineralogist, 32 (4) 903-907
Localities for TusioniteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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