Inderite Mineral Data

Inderite Mineral Data +

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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.

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:

Inderite Pinnoite

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 - PrismaticH-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),

Crystal Structure:

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Corazza E , Acta Crystallographica, Section B , 32 (1976) p.1329-1333, Inderite: Crystal structure refinement and relationship to kurnakovite

Physical Properties of Inderite

Cleavage:

[110] Good

Color:

Colorless, White, Pink.

Density:

1.8

Diaphaniety:

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

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:

r_electron=1.88 gm/cc
note: r_Inderite=1.80 gm/cc.

Fermion Index

Fermion Index = 0.03211
Boson Index = 0.96789

Photoelectric:

PE_Inderite= 0.48 barns/electron
U=PE_Inderite x r_electron= 0.91 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Inderite is Not Radioactive

Inderite Classification

Dana Class:

26.3.1.3 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.3)Dana Type

(26.3.1)Dana Group

26.3.1.1 Inyoite Ca2B6O6(OH)10·8(H2O) P 2₁/a 2/m

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

26.3.1.3 Inderite MgB3O3(OH)5·5(H2O) P 2₁/a 2/m

Strunz Class:

V/H.06-20 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2-

V/H.06 - Kurnakovite - Solongoite series

V/H.06-10 Kurnakovite MgB3O3(OH)5·5(H2O) P1 1

V/H.06-20 Inderite MgB3O3(OH)5·5(H2O) P 2₁/a 2/m

V/H.06-30 Inderborite CaMg[B3O3(OH)5]2·6(H2O) A2/a 2/m

V/H.06-40 Meyerhofferite Ca2B6O6(OH)10·2(H2O) P1 1

V/H.06-50 Inyoite Ca2B6O6(OH)10·8(H2O) P 2₁/a 2/m

V/H.06-60 Solongoite Ca2B3O4(OH)4Cl P 2₁/c 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Inderite

MgB3O3(OH)5·5(H2O)
Dana No: 26.3.1.3 Strunz No: V/H.06-20
Locality:

Notes: