Inderite (original) (raw)
A valid IMA mineral species - grandfathered
About InderiteHide
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Formula:
MgB3O3(OH)5 · 5H2O
Colour:
Colourless, white, pink; colourless in transmitted light
Lustre:
Vitreous, Greasy, Pearly, Dull
Crystal System:
Monoclinic
Name:
After the type locality, the Inder Lake, Kazakhstan.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2025:7
a0465d53-7fec-45a4-a366-a98b1c0bb5a6
IMA Classification of InderiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of InderiteHide
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6.CA.15
6 : BORATES
C : Triborates
A : Neso-triborates
26.3.1.3
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.2.11
9 : Borates
2 : Borates of Be and Mg
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 |
|---|---|---|
| Idr | 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 InderiteHide
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Vitreous, Greasy, Pearly, Dull
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages.
Colour:
Colourless, white, pink; colourless in transmitted light
Cleavage:
Perfect
On {010} perfect; on {110} good.
Density:
1.80 g/cm3 (Measured) 1.794 g/cm3 (Calculated)
Optical Data of InderiteHide
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RI values:
_n_α = 1.488 _n_β = 1.491 _n_γ = 1.505
2V:
Measured: 37° , Calculated: 52°
δ = 0.017
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
X ≃ b; Z ∧ c = 9°.
Chemistry of InderiteHide
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Mindat Formula:
MgB3O3(OH)5 · 5H2O
Crystallography of InderiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.0350(8) Å, b = 13.1145(13) Å, c = 6.8221(3) Å
β = 104.49°
Ratio:
a:b:c = 0.918 : 1 : 0.52
Unit Cell V:
1,042.50 ų (Calculated from Unit Cell)
Morphology:
Crystals tabular with two pinacoidal cleavages (California); acicular, in reniform nodular aggregates (Inder Lake); prismatic (artificial).
Forms include {110}, {120}, and {001}.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009554 | Inderite | Corazza E (1976) Inderite: Crystal structure refinement and relationship to kurnakovite Acta Crystallographica B32 1329-1333 |  |
1976 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.052 Å | (100) |
| 3.357 Å | (68) |
| 5.72 Å | (60) |
| 6.61 Å | (44) |
| 2.662 Å | (44) |
| 2.558 Å | (44) |
| 5.84 Å | (40) |
Geological EnvironmentHide
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Geological Setting:
Rarely as a primary mineral in lacustrine borate deposits.
Type Occurrence of InderiteHide
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General Appearance of Type Material:
Small nodules or aggregates of minute needles.
Place of Conservation of Type Material:
Geological Setting of Type Material:
Evaporite borate deposit.
Associated Minerals at Type Locality:
Synonyms of InderiteHide
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Other Language Names for InderiteHide
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Relationship of Inderite 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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Other InformationHide
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IR Spectrum:
Boron Open Pit material [cm-1]: 3625, 3580, 3470s, 3435s, 3360s, 3260s, 3060sh, 2940sh, 1705sh, 1685, 1650w, 1449, 1405s, 1350s, 1280, 1260sh, 1179, 1134, 1047s, 999s, 870s, 802, 748, 675sh, 657, 620sh, 583, 568, 487w, 347w
Notes:
Insoluble in water. Readily soluble in warm, dilute HCl.
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 InderiteHide
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References for InderiteHide
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Reference List:
Frost, Ray L., López, Andrés, Xi, Yunfei, Lima, Rosa Malena Fernandes, Scholz, Ricardo, Granja, Amanda (2013) The molecular structure of the borate mineral inderite Mg(H4B3O7)(OH)⋅5H2O – A vibrational spectroscopic study. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 116. 160-164 doi:10.1016/j.saa.2013.06.108
Localities for InderiteHide
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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.