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Delindeite Mineral Data

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General Delindeite Information

Help on Chemical  Formula: Chemical Formula: Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2
Help on Composition: Composition: Molecular Weight = 886.43 gm
   Potassium   0.88 %  K     1.06 % K2O
   Barium     30.98 %  Ba   34.59 % BaO
   Sodium      3.63 %  Na    4.89 % Na2O
   Titanium   14.04 %  Ti   23.43 % TiO2
   Aluminum    0.30 %  Al    0.58 % Al2O3
   Iron        1.89 %  Fe    2.70 % Fe2O3
   Silicon    12.36 %  Si   26.44 % SiO2
   Hydrogen    0.68 %  H     6.04 % H2O
   Oxygen     35.23 %  O
             ______        ______ 
             100.00 %       99.73 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.4K0.2Ba2Ti2.6Fe3+0.3Al0.1Si3.9O15.2(OH)2.71.62(H2O)
Help on Environment: Environment: Secondary mineral formed under oxidizing conditions from a titianiferous nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Diamond Jo quarry, Magnet Cove, Hot Springs County, Arkansas, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henry deLinde, long time mineral collector and owner of the Diamond Jo quarry.
Help on Name Pronunciation: Name Pronunciation: Delindeite + Pronunciation Say DELINDEITE

Delindeite Image

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Comments: pale pink acicular crystal sprays of delindeite on matrix.
Location: Diamond Jo Quarry, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Delindeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7769:1:3.1373
Help on Cell Dimensions: Cell Dimensions: a = 5.327, b = 6.856, c = 21.51, Z = 2; beta = 93.8° V = 783.86 Den(Calc)= 3.76
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.8(1), 2.888(0.31), 3.083(0.28),3.54(0.24), 2.262(0.2), 2.806(0.2), 2.753(0.16),

Physical Properties of Delindeite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Gray pink.
Help on Density: Density: 3.3
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Flakes - Flat, thin crystals or aggregates.
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Delindeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.126 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2302,KPDmeas= 0.2623,KC= 0.233
Ncalc = 1.77 - 1.88
Help on Optical Data: Optical Data: Biaxial (+), a=1.79, b=1.825, g=1.982, bire=0.1920, 2V(Calc)=54, 2V(Meas)=54.

Calculated Properties of Delindeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.51 gm/cc
note: Specific Gravity of Delindeite =3.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEDelindeite = 136.56 barns/electron
U=PEDelindeite x relectron= 479.86 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 11.88 (Gamma Ray American Petroleum Institute Units)
Concentration of Delindeite per GRapi unit = 8.42 (%)

Estimated Radioactivity from Delindeite - barely detectable


Delindeite Classification

Help on  Dana Class: Dana Class: 56.02.06c.02 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.02)with cations in [4] and/or >[4] coordination
  (56.02.06c)Seidozerite - Lamprophyllite group (Lamprophyllite subgroup)
56.02.06c.01 Barytolamprophyllite Ba2Na3(Fe,Ti)3(Si2O7)2(O,OH,F)4 C 2/m 2/m
56.02.06c.02 Delindeite Ba2(Na,K,[])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2 A2/m 2/m
56.02.06c.03 Ericssonite BaMn2FeO[Si2O7](OH) C 2/m 2/m
56.02.06c.04 Lamprophyllite Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2 C 2/m 2/m
56.02.06c.05 Orthoericssonite BaMn2(FeO)Si2O7(OH) Pmmn 2/m 2/m 2/m
56.02.06c.06 Andremeyerite BaFe(Fe,Mn,Mg)Si2O7 P 21/c 2/m
56.02.06c.07 Eveslogite! (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14 P 2/m 2/m
56.02.06c.08 Nabalamprophyllite! Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} P 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.BE.60 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
09.BE.60 Delindeite Ba2(Na,K,[])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2 A2/m 2/m

Other Delindeite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2, AmMin v 87, p 999) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Delindeite :
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

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


Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2
Dana No: 56.02.06c.02 Strunz No: 09.BE.60





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