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Inderborite

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Formula:
CaMg[B3O3(OH)5]2 · 6H2O
System:
Monoclinic
Colour:
Colourless to white
Lustre:
Vitreous
Hardness:
Member of:
Name:
After the type locality, INDER Lake, Kazakhstan, plus in allusion to its composition, being a BORate.

Classification of Inderborite

Approved, 'Grandfathered' (first described prior to 1959)
6.CA.25

6 : BORATES
C : Triborates
A : Neso-triborates
26.3.1.2

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.3.23

9 : Borates
3 : Borates of Ca and Sr

Physical Properties of Inderborite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless to white
Streak:
White
Hardness (Mohs):
Cleavage:
Distinct/Good
On {100} good.
Fracture:
Conchoidal
Density:
2 g/cm3 (Measured)    

Optical Data of Inderborite

Type:
Biaxial (-)
RI values:
nα = 1.482 nβ = 1.512 nγ = 1.530
2V:
Measured: 77° , Calculated: 74°
Max Birefringence:
δ = 0.048
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none

Chemical Properties of Inderborite

IMA Formula:
CaMg[B3O3(OH)5]2 · 6H2O
Elements listed in formula:

Crystallography of Inderborite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.13 Å, b = 7.43 Å, c = 19.23 Å
β = 90.29°
Ratio:
a:b:c = 1.633 : 1 : 2.588
Unit Cell Volume:
V 1,733.10 ų (Calculated from Unit Cell)
Morphology:
Crystals to 2 cm. Coarsely crystalline aggregates.

Type Occurrence of Inderborite

Geological Setting of Type Material:
Borate deposit.
Associated Minerals at Type Locality:

Relationship of Inderborite to other Species

Member of:
Other Members of Group:
InderiteMgB3O3(OH)5 · 5H2O
InyoiteCa(H4B3O7)(OH) · 4H2O
KurnakoviteMgB3O3(OH)5 · 5H2O
MeyerhofferiteCa2(H3B3O7)2 · 4H2O
SolongoiteCa2(H3B3O7)(OH)Cl
6.CA.10AmeghiniteNaB3O3(OH)4
6.CA.15InderiteMgB3O3(OH)5 · 5H2O
6.CA.20KurnakoviteMgB3O3(OH)5 · 5H2O
6.CA.30MeyerhofferiteCaB3O3(OH)5 · H2O
6.CA.35InyoiteCaB3O3(OH)5 · 4H2O
6.CA.40SolongoiteCa2B3O4(OH)4Cl
6.CA.45Peprossiite-(Ce)(Ce,La)(Al3O)2/3B4O10
6.CA.50NifontoviteCa3[BO(OH)2]6 · 2H2O
6.CA.55OlshanskyiteCa2[B3O3(OH)6]OH · 3H2O
9.3.1CalciboriteCaB2O4
9.3.2SibirskiteCaHBO3
9.3.3FabianiteCaB3O5(OH)
9.3.4UralboriteCaB2O2(OH)4
9.3.5VimsiteCaB2O2(OH)4
9.3.6OlshanskyiteCa2[B3O3(OH)6]OH · 3H2O
9.3.7FroloviteCa[B(OH)4]2
9.3.8KorzhinskiteCaB2O4 · 0.5H2O
9.3.9TyretskiteCa2B5O9(OH) · H2O
9.3.10NifontoviteCa3[BO(OH)2]6 · 2H2O
9.3.12InyoiteCaB3O3(OH)5 · 4H2O
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
9.3.14ColemaniteCaB3O4(OH)3 · H2O
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2O
9.3.16HexahydroboriteCa[B(OH)4]2 · 2H2O
9.3.17MeyerhofferiteCaB3O3(OH)5 · H2O
9.3.18PriceiteCa2B5O7(OH)5 · H2O
9.3.19GinoriteCa2B14O20(OH)6 · 5H2O
9.3.20ProbertiteNaCaB5O7(OH)4 · 3H2O
9.3.21UlexiteNaCaB5O6(OH)6 · 5H2O
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
9.3.24WardsmithiteCa5Mg(B4O7)6 · 30H2O
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4
9.3.26StrontioboriteSrB8O11(OH)4
9.3.27VeatchiteSr2[B5O8(OH)]2B(OH)3 · H2O
9.3.28Veatchite-ASr2B11O16(OH)5 · H2O
9.3.29 P-VeatchiteSr2B11O16(OH)5 · H2O
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2O
9.3.32StrontioginoriteSrCaB14O20(OH)6 · 5H2O

Other Names for Inderborite

Name in Other Languages:

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
Other Information:
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.

References for Inderborite

Reference List:
Gorshov (1941) Comptes rendus de l’académie des sciences de l’U.R.S.S., n.s.: 33: 254.

Ikornikova and Godlevsky (1941) Comptes rendus de l’académie des sciences de l’U.R.S.S., n.s.: 33: 257 (as Metahydroboracite).

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 355-356.

Canadian Mineralogist (1994): 32: 533-539.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.

Internet Links for Inderborite

mindat.org URL:
https://www.mindat.org/min-2024.html
Please feel free to link to this page.

Localities for Inderborite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Argentina
 
  • Salta
    • Los Andes department
      • Sijes
Galliski, M.A., Cooper, M.A., Márquez-Zavalía, M.F., and Hawthorne, F.C. (2010) Alfredstelznerite: a new calcium borate hydrate from Santa Rosa mine, Salta, northwestern Argentina. Canadian Mineralogist, 48, 123-128
Kazakhstan
 
  • Atyrau Province (Atyrau Oblysy; Atyrau Oblast')
    • Atyrau (Gur'yev)
[Clark, 1993 - "Hey's Mineral Index", p322]; Pekov, I. V. & Abramov, D. V. (1993): Boron deposit of the Inder and its minerals. World of Stones, 1, 23-30.
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Turkey
 
  • Central Anatolia Region
    • Eskişehir Province
      • Kirka
CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina; A Summary and Geological Comparison. Turkish Journal of Earth Sciences, Vol. 9, 2000, pp. 1-27; http://www.mineralienatlas.de/lexikon/index.php/T%FCrkei/Eskisehir/Kirka/Sarikaya; Baysal, O. (1972) : A mineralogical study and genesis of Sarıkaya (Kırka) borate deposits. Hacettepe University, Ankara.
Mineral and/or Locality  
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