Rasvumite (original) (raw)
A valid IMA mineral species
About RasvumiteHide
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Crystal System:
Orthorhombic
Name:
Named after the type locality: Rasvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3369:1
65d3effe-80eb-438f-ae56-3e7843add3d9
IMA Classification of RasvumiteHide
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Type description reference:
Classification of RasvumiteHide
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2.FB.20
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
B : With alkalies (without Cl, etc.)
2.9.11.1
2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.0.4
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Rsv | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Rsv | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of RasvumiteHide
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Comment:
Turns iridescent purple or bronze, to dull on oxidation.
Hardness:
VHN100=33.9 - Vickers
Cleavage:
Perfect
perfect on {110}
Density:
3.1 g/cm3 (Measured) 3.029 g/cm3 (Calculated)
Optical Data of RasvumiteHide
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Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 400nm | 16.7% | 30.1% |
| 420nm | 16.9% | 30.5% |
| 440nm | 17.1% | 30.8% |
| 460nm | 17.3% | 30.2% |
| 480nm | 17.5% | 29.6% |
| 500nm | 17.6% | 29.4% |
| 520nm | 17.9% | 29.4% |
| 540nm | 18.1% | 29.4% |
| 560nm | 18.5% | 29.8% |
| 580nm | 19.0% | 30.3% |
| 600nm | 19.6% | 31.0% |
| 620nm | 20.1% | 31.7% |
| 640nm | 20.6% | 32.5% |
| 660nm | 20.8% | 33.2% |
| 680nm | 20.9% | 33.6% |
| 700nm | 21.0% | 33.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 33.8%.
R1 shown in black, R2 shown in red
Chemistry of RasvumiteHide
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Common Impurities:
Na,Mg,Ca,Cu
Crystallography of RasvumiteHide
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Crystal System:
Orthorhombic
Class (H-M):
m m m _(_2/_m_2/_m_2/m ) - Dipyramidal
Cell Parameters:
a = 9.04 Å, b = 11.01 Å, c = 5.43 Å
Ratio:
a:b:c = 0.821 : 1 : 0.493
Unit Cell V:
540.45 ų (Calculated from Unit Cell)
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000782 | Rasvumite | Clark J R, Brown G E (1980) Crystal structure of rasvumite, KFe2S3 American Mineralogist 65 477-482 |  |
1980 | 0 | 293 | |
| 0014044 | Rasvumite | Mitchell R H, Ross K C, Potter E G (2004) Crystal structures of CsFe2S3 and RbFe2S3: Synthetic analogs of rasvumite KFe2S3 Journal of Solid State Chemistry 177 1867-1872 | 2004 | synthetic | 0 | 293 | |
| 0014046 | Rasvumite | Mitchell R H, Ross K C, Potter E G (2004) Crystal structures of CsFe2S3 and RbFe2S3: Synthetic analogs of rasvumite KFe2S3 Journal of Solid State Chemistry 177 1867-1872 | 2004 | synthetic | 0 | 293 | |
| 0014047 | Rasvumite | Mitchell R H, Ross K C, Potter E G (2004) Crystal structures of CsFe2S3 and RbFe2S3: Synthetic analogs of rasvumite KFe2S3 Journal of Solid State Chemistry 177 1867-1872 | 2004 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.513 Å | (100) |
| 6.98 Å | (62) |
| 3.403 Å | (43) |
| 3.492 Å | (17) |
| 1.778 Å | (14) |
| 2.935 Å | (12) |
| 2.905 Å | (12) |
Geological EnvironmentHide
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Type Occurrence of RasvumiteHide
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General Appearance of Type Material:
Grains, usually less than a mm in size, but up to 2 mm. The aggregates are composed of very fine, often curved needles. Commonly along grain boundaries of K feldspar, nepheline, and aegirine.
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia, 3627.
Mining Institute, St. Petersburg, Russia, 1095/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 73142, 73143, 73584, 73975.
Geological Setting of Type Material:
Associated Minerals at Type Locality:
Reference:
Sokolova, M.N., Dobrovol'skaya, M.G., Organova, N.I., Dmitrik, A.L. (1970) A sulfide of iron and potassium, the new mineral rasvumite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 99(6): 712-720.
Synonyms of RasvumiteHide
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Other Language Names for RasvumiteHide
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Simplified Chinese:硫铁钾矿
Traditional Chinese:硫鐵鉀礦
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Notes:
Slightly magnetic.
Polishes poorly, easily splitting into fine needles.
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 RasvumiteHide
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References for RasvumiteHide
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Reference List:
Czamanske, Gerald K., Erd, Richard C., Sokolova, Maja N., Dobrovol'skaya, Maja G., Dmitrieva, Margret T. (1979) New data on rasvumite and djerfisherite. American Mineralogist, 64 (7-8) 776-778
Localities for RasvumiteHide
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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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- 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.