Indium
A valid IMA mineral species
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About Indium
Formula:
In
Colour:
Grey with yellowish tint
Lustre:
Metallic
Hardness:
3
Specific Gravity:
7.29 (Calculated)
Crystal System:
Tetragonal
Name:
Named for chemical element for its indigo blue emission spectrum.
This page provides mineralogical data about Indium.
Unique Identifiers
Mindat ID:
2030
Long-form identifier:
mindat:1:1:2030:1
GUID
(UUID V4):
(UUID V4):
954221aa-7b1f-4447-ad9d-9a946bc72780
IMA Classification of Indium
Approved
Classification of Indium
1.AC.05
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
C : Indium-tin family
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
C : Indium-tin family
Dana 7th ed.:
1.1.20.1
1.1.14.1
1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1.20
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
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 |
---|---|---|
In | 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 Indium
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of Indium
Metallic
Transparency:
Opaque
Colour:
Grey with yellowish tint
Hardness:
3 on Mohs scale
Hardness:
VHN100=130 - 159 - Vickers
Density:
7.29 g/cm3 (Calculated)
Optical Data of Indium
Anisotropism:
weak
Colour in reflected light:
pale rose
Chemistry of Indium
Mindat Formula:
In
Elements listed:
Crystallography of Indium
Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Setting:
I4/mmm
Cell Parameters:
a = 3.2517 Å, c = 4.9459 Å
Ratio:
a:c = 1 : 1.521
Unit Cell V:
52.30 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Massive, as grains, to 1 mm
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0001116 | Indium | Raudsepp M, Turnock A C, Hawthorne F C (1987) Characterization of cation ordering in synthetic scandium-fluor-eckermannite, indium-fluor-eckermannite, and scandium-fluor-nyboite by Rietveld structure refinement American Mineralogist 72 959-964 | 1987 | 0 | 293 | ||
0014125 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014126 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014127 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014128 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014129 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014130 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 | |
0014131 | Indium | Smith J F, Schneider V L (1964) Anisotropic thermal expansion of indium Journal of the Less-Common Metals 7 17-22 | 1964 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.715 Å | (100) |
2.298 Å | (36) |
1.683 Å | (24) |
1.395 Å | (23) |
2.471 Å | (21) |
1.470 Å | (16) |
1.0904 Å | (12) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) |
Type Occurrence of Indium
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, vis54.
Geological Setting of Type Material:
greisenized and albitized granite
Associated Minerals at Type Locality:
Reference:
Ivanovv, V.V. (1964) Native indium. Geochemistry, mineralogy and genetic types of deposits of rare elements / Geokhimiya, mineralogiya i geneticheskiye tipy mestorozhdenii redkikh elementov: 2: 568-569. [in Russian]
Other Language Names for Indium
Common Associates
Related Minerals - Strunz-mindat Grouping
1.AC.10 | Tin | Sn |
1.AC.15 | Eta-bronze | Cu6Sn5 |
1.AC.15 | Sorosite | Cu1+x(Sn,Sb) |
1.AC.15 | Yuanjiangite | AuSn |
1.AC.15 | UM1965-07-E:CuSn | Cu3Sn |
1.AC.20 | Rumoiite | AuSn2 |
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 Indium
mindat.org URL:
https://www.mindat.org/min-2030.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Indium
Localities for Indium
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).
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.
All localities listed without proper references should be considered as questionable.
Canada | |
| Watson et al. (1996) |
Hungary | |
| Béla Fehér 2014 |
Kazakhstan | |
| Litvinovich et al. (1960) |
Kosovo | |
| www.spathfluor.com (n.d.) |
Russia | |
| Distler V.V. et al. (2003) +1 other reference |
| Pekov (1998) |
UK | |
| Andersen et al. (2016) |
Ukraine | |
| Nechaev S.V. et al. (1987) +1 other reference |
Uzbekistan | |
| Novgorodova M.I. (1994) |
The Moon | |
| Mokhov A.V. et al. (2009) |
| T.A. Gornostaeva analytical data (2014) |
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Zabaykalsky Krai, Russia