Malayaite (original) (raw)
A valid IMA mineral species
About MalayaiteHide
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Colour:
Pale creamy-yellow, deep orange-yellow, white, colorless
Crystal System:
Monoclinic
Name:
Named after the type locality of Malaya, Malaysia. That is the mainland part of Malaysia (Peninsular Malaysia), located on the Malaysian Peninsula.
The tin (Sn4+) analogue of Titanite. Malayaite from Okehampton, England fluoresces very dull to very pale yellow in shortwave and barely perceptibly in longwave. The wollastonite associated with malayaite fluoresces a moderately bright creamy-yellow and is frequently confused as malayaite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2552:8
d193f63b-ddbe-4d01-8743-e5aaa81a7ea8
IMA Classification of MalayaiteHide
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Type description reference:
Classification of MalayaiteHide
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9.AG.15
9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
52.4.3.2
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
14.12.2
14 : Silicates not Containing Aluminum
12 : Silicates of Sn
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 |
|---|---|---|
| Mly | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of MalayaiteHide
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Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Sorry, your browser doesn't support HTML5 audio. | Jolyon Ralph | United Kingdom |
Physical Properties of MalayaiteHide
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Transparency:
Translucent, Opaque
Colour:
Pale creamy-yellow, deep orange-yellow, white, colorless
Density:
4.3(2) g/cm3 (Measured) 4.55 g/cm3 (Calculated)
Optical Data of MalayaiteHide
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RI values:
_n_α = 1.764 - 1.765 _n_β = 1.783 - 1.786 _n_γ = 1.798 - 1.801
δ = 0.034 - 0.036
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of MalayaiteHide
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Mindat Formula:
CaSn(SiO4)O
Crystallography of MalayaiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.156(6) Å, b = 8.895(9) Å, c = 6.668(4) Å
β = 113.4(1)°
Ratio:
a:b:c = 0.804 : 1 : 0.75
Unit Cell V:
389.53 ų (Calculated from Unit Cell)
Morphology:
Crystals wedge-shaped, up to 3 cm; massive, as a coating on cassiterite
Comment:
Space Group: A2/a
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000586 | Malayaite | Higgins J B, Ribbe P H (1977) The structure of malayaite, CaSnOSiO4, a tin analog of titanite American Mineralogist 62 801-806 |  |
1977 | 0 | 293 | |
| 0002981 | Malayaite | Rath S, Kunz M, Miletich R (2003) Pressure-induced phase transition in malayaite, CaSnOSiO4 American Mineralogist 88 293-300 | |
2003 | 0 | 293 | |
| 0002982 | Malayaite | Rath S, Kunz M, Miletich R (2003) Pressure-induced phase transition in malayaite, CaSnOSiO4 American Mineralogist 88 293-300 | |
2003 | 4.238 | 293 | |
| 0002983 | Malayaite | Rath S, Kunz M, Miletich R (2003) Pressure-induced phase transition in malayaite, CaSnOSiO4 American Mineralogist 88 293-300 | |
2003 | 4.505 | 293 | |
| 0002984 | Malayaite | Rath S, Kunz M, Miletich R (2003) Pressure-induced phase transition in malayaite, CaSnOSiO4 American Mineralogist 88 293-300 | |
2003 | 5.769 | 293 | |
| 0002985 | Malayaite | Rath S, Kunz M, Miletich R (2003) Pressure-induced phase transition in malayaite, CaSnOSiO4 American Mineralogist 88 293-300 | |
2003 | 7.33 | 293 | |
| 0008233 | Malayaite | Zhang M, Meyer H W, Groat L A, Bismayer U, Salje E K H, Adiwidjaja G (1999) An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO5 Physics and Chemistry of Minerals 26 546-553 | 1999 | 0 | 293 | ||
| 0008234 | Malayaite | Zhang M, Meyer H W, Groat L A, Bismayer U, Salje E K H, Adiwidjaja G (1999) An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO5 Physics and Chemistry of Minerals 26 546-553 | 1999 | 0 | 293 | ||
| 0008235 | Malayaite | Zhang M, Meyer H W, Groat L A, Bismayer U, Salje E K H, Adiwidjaja G (1999) An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO5 Physics and Chemistry of Minerals 26 546-553 | 1999 | 0 | 293 | ||
| 0008236 | Malayaite | Zhang M, Meyer H W, Groat L A, Bismayer U, Salje E K H, Adiwidjaja G (1999) An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO5 Physics and Chemistry of Minerals 26 546-553 | 1999 | 0 | 293 | ||
| 0008237 | Malayaite | Zhang M, Meyer H W, Groat L A, Bismayer U, Salje E K H, Adiwidjaja G (1999) An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO5 Physics and Chemistry of Minerals 26 546-553 | 1999 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.28 Å | (100) |
| 5.05 Å | (50) |
| 2.639 Å | (45) |
| 3.06 Å | (35) |
| 2.665 Å | (30) |
| 2.412 Å | (20) |
| 2.099 Å | (20) |
Geological EnvironmentHide
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Type Occurrence of MalayaiteHide
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General Appearance of Type Material:
Yellow coatings on cassiterite crystals.
Place of Conservation of Type Material:
Geological Setting of Type Material:
Hydrothermal alteration of a cassiterite-quartz assemblage.
Associated Minerals at Type Locality:
Reference:
Ingham, F.T. and Bradford, E.F. (1960) The geology and mineral resources of the Kinta Valley, Perak Federation of Malaya. Geological Survery District Memoir No.9: 1-347, esp.105.
Synonyms of MalayaiteHide
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Other Language Names for MalayaiteHide
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Relationship of Malayaite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of MalayaiteHide
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very pale to very dull orange-yellow or yellow-green under SW UV. May be associated with much brighter yellow-fluorescing species such as wollastonite.
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 MalayaiteHide
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References for MalayaiteHide
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Reference List:
Groat, Lee A., Kek, Stefan, Bismayer, Ulrich, Schmidt, Claudia, Krane, Hans Georg, Meyer, Hinrich, Nistor, Leona, van Tendeloo, Gustaaf (1996) A synchrotron radiation, HRTEM, X-ray powder diffraction, and Raman spectroscopic study of malayaite, CaSnSiO5. American Mineralogist, 81 (5) 595-602 doi:10.2138/am-1996-5-606
Malcherek, Thomas, Paulenz, Bianca, Fischer, Michael, Paulmann, Carsten (2020) The modulated low-temperature structure of malayaite, CaSnOSiO4. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 76 (3) 316-321 doi:10.1107/s2052520620003807
Malcherek, Thomas, Fischer, Michael, Mihailova, Boriana, Paulenz, Bianca, Paulmann, Carsten, Bismayer, Ulrich (2024) Incommensurate to normal phase transition in malayaite. American Mineralogist, 109 (8) 1419-1428 doi:10.2138/am-2023-9063
Localities for MalayaiteHide
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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.