Inderite Mineral Data

General Inderite Information

Chemical Formula:

MgB3O3(OH)5•5(H2O)

Composition:

Molecular Weight = 279.85 gm

Magnesium 8.69 % Mg 14.40 % MgO

Boron 11.59 % B 37.32 % B₂O₃

Hydrogen 5.40 % H 48.28 % H₂O

Oxygen 74.32 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

MgB₃O₃(OH)₅•5(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1937

Locality:

Inder Lake, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named after its source.

Name Pronunciation:

Inderite

Synonym:

ICSD 60

PDF 36-423

Inderite Image

Images:

Inderite

Comments: Prismatic colorless crystal of inderite.
Location: Boron, Kern County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Pinnoite Inderite

Comments: Pale green translucent crystalline pinnoite on chalky white inderite.
Location: Lake Inder, Atyrau, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Inderite Crystallography

Axial Ratios:

a:b:c =0.9195:1:0.5182

Cell Dimensions:

a = 12.12, b = 13.18, c = 6.83, Z = 4; beta = 104.817° V = 1,054.76 Den(Calc)= 1.76

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.26(1), 5.66(1), 5.01(0.9),

Physical Properties of Inderite

Cleavage:

{110} Good

Color:

Colorless, White, Pink.

Density:

1.8

Diaphaneity:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Inderite

Gladstone-Dale:

CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2811,KPDmeas= 0.2748,KC= 0.2732
Ncalc = 1.48 - 1.49

Optical Data:

Biaxial (+), a=1.488, b=1.491, g=1.505, bire=0.0170, 2V(Calc)=52, 2V(Meas)=37.

Calculated Properties of Inderite

Electron Density:

Bulk Density (Electron Density)=1.88 gm/cc
note: Specific Gravity of Inderite =1.80 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Inderite= 0.48 barns/electron
U=PE_Inderite x rElectron Density= 0.91 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Inderite is Not Radioactive

Inderite Classification

Dana Class:

26.03.01.03 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.03)Dana Type

(26.03.01)Inyoite Group

26.03.01.01 Inyoite Ca2B6O6(OH)10•8(H2O) P 2₁/a 2/m

26.03.01.02 Inderborite CaMg[B3O3(OH)5]2•6(H2O) A2/a 2/m

26.03.01.03 Inderite MgB3O3(OH)5•5(H2O) P 2₁/a 2/m

Strunz Class:

06.CA.15 06 - BORATES

06.C - Triborates

06.CA -Neso-triborates

06.CA.15 Inderite MgB3O3(OH)5•5(H2O) P 2₁/a 2/m

Other Inderite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Inderite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Inderite Specimen Label here :

Inderite

MgB3O3(OH)5•5(H2O)
Dana No: 26.03.01.03 Strunz No: 06.CA.15
Locality:

Notes:

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