Inderborite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Inderborite
Formula:
CaMg(H3B3O7)2 · 8H2O
Colour:
Colourless to white
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
1.93 - 2.00
Crystal System:
Monoclinic
Member of:
Name:
After the type locality, INDER Lake, Kazakhstan, plus in allusion to its composition, being a BORate.
Unique Identifiers
Mindat ID:
2024
Long-form identifier:
mindat:1:1:2024:0
GUID
(UUID V4):
(UUID V4):
8cc79de3-d88c-4d23-81c9-07e3ef39d7fd
IMA Classification of Inderborite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
CaMg[B3O3(OH)5]2 · 6H2O
First published:
1941
Classification of Inderborite
6.CA.25
6 : BORATES
C : Triborates
A : Neso-triborates
6 : BORATES
C : Triborates
A : Neso-triborates
26.3.1.2
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.3.23
9 : Borates
3 : Borates of Ca and Sr
9 : Borates
3 : Borates of Ca and Sr
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 |
---|---|---|
Ibo | 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 Inderborite
Vitreous
Transparency:
Transparent
Colour:
Colourless to white
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Distinct/Good
On {100} good.
On {100} good.
Fracture:
Conchoidal
Density:
1.93 - 2.00 g/cm3 (Measured) 1.92 g/cm3 (Calculated)
Optical Data of Inderborite
Type:
Biaxial (-)
RI values:
nα = 1.482 - 1.496 nβ = 1.512 - 1.521 nγ = 1.530 - 1.540
2V:
Measured: 77° to 86°, Calculated: 74°
Max Birefringence:
δ = 0.048
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Optical Extinction:
Z = b; X ∧ c = 2.5°.
Chemistry of Inderborite
Mindat Formula:
CaMg(H3B3O7)2 · 8H2O
Crystallography of Inderborite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 12.137(2) Å, b = 7.433(1) Å, c = 19.234(3) Å
β = 90.29°
β = 90.29°
Ratio:
a:b:c = 1.633 : 1 : 2.588
Unit Cell V:
1,735.16 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals to 2 cm. Coarsely crystalline aggregates.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0005383 | Inderborite | Burns P C, Hawthorne F C (1994) Structure and hydrogen bonding in inderborite, a heteropolyhedral sheet structure The Canadian Mineralogist 32 533-539 | 1994 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.35 Å | (100) |
3.26 Å | (80) |
3.07 Å | (80) |
2.45 Å | (80) |
2.29 Å | (80) |
1.801 Å | (80) |
6.13 Å | (50) |
Comments:
Inder deposit, Kazakhstan.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
25 : Evaporites (prebiotic) |
Type Occurrence of Inderborite
General Appearance of Type Material:
Coarsely crystalline aggregates and well developed crystals up to 2 cm in size.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 43443–43447.
Geological Setting of Type Material:
Borate deposit.
Associated Minerals at Type Locality:
Reference:
Gorshkov G S (1941) A new mineral from the region of Lake Inder. Comptes Rendus (Doklady) de l'Académie des Sciences de l'URSS 33, 254-256
Synonyms of Inderborite
Other Language Names for Inderborite
Relationship of Inderborite to other Species
Member of:
Other Members of this group:
Inderite | MgB3O3(OH)5 · 5H2O | Mon. 2/m : P21/b |
Inyoite | Ca(H4B3O7)(OH) · 4H2O | Mon. 2/m : P21/b |
Kurnakovite | MgB3O3(OH)5 · 5H2O | Tric. 1 : P1 |
Meyerhofferite | CaB3O3(OH)5 · H2O | Tric. 1 : P1 |
Solongoite | Ca2(H3B3O7)(OH)Cl | Mon. 2/m : P21/b |
Common Associates
Related Minerals - Strunz-mindat Grouping
6.CA.10 | Ameghinite | Na(H4B3O7) |
6.CA.15 | Inderite | MgB3O3(OH)5 · 5H2O |
6.CA.20 | Kurnakovite | MgB3O3(OH)5 · 5H2O |
6.CA.30 | Meyerhofferite | CaB3O3(OH)5 · H2O |
6.CA.35 | Inyoite | Ca(H4B3O7)(OH) · 4H2O |
6.CA.40 | Solongoite | Ca2(H3B3O7)(OH)Cl |
6.CA.45 | Peprossiite-(Ce) | (Ce,La)(Al3O)2/3B4O10 |
6.CA.50 | Nifontovite | Ca3B6O6(OH)12(H2O)2 |
6.CA.55 | Olshanskyite | Ca2[B3O3(OH)6](OH) · 3H2O |
Other Information
IR Spectrum:
Inder material [cm-1]: 3655, 3550, 3495, 3420s, 3355s, 3240sh, 3100sh, 1650, 1462, 1423s, 1344, 1294w, 1220sh, 1203, 1100sh, 1064s, 1020sh, 961s, 867s, 814w, 759, 729, 643w, 600w, 530, 445, 410sh
Thermal Behaviour:
A small piece cracks in the flame of a blowtorch and melts, forming colourless glass and imparting a light-green colour to the flame. Heated in a closed tube, it splits and produces water.
Notes:
Slowly soluble in cold water. Rapidly soluble in hot 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 Inderborite
mindat.org URL:
https://www.mindat.org/min-2024.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Inderborite
Reference List:
Burns, P. C., Hawthorne, F. C. (1994) Structure and hydrogen bonding in inderborite, a heteropolyhedral sheet structure. The Canadian Mineralogist, 32 (3) 533-539
Localities for Inderborite
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.
Argentina | |
| Galliski et al. (2010) |
Canada | |
| Shang (2000) |
Kazakhstan | |
| Clark (1993) +1 other reference |
| Gorshkov (1941) +1 other reference |
Turkey | |
| A Summary and Geological Comparison. ... +3 other references |
Quick NavTopAbout InderboriteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Inder B deposit and salt dome, Inder District, Atyrau Region, Kazakhstan