Delindeite Mineral Data
General Delindeite Information
Chemical Formula:
Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2
Composition:
Molecular Weight = 886.43 gm
Potassium 0.88 % K 1.06 % K2 O
Barium 30.98 % Ba 34.59 % BaO
Sodium 3.63 % Na 4.89 % Na2 O
Titanium 14.04 % Ti 23.43 % TiO2
Aluminum 0.30 % Al 0.58 % Al2 O3
Iron 1.89 % Fe 2.70 % Fe2 O3
Silicon 12.36 % Si 26.44 % SiO2
Hydrogen 0.68 % H 6.04 % H2 O
Oxygen 35.23 % O
______ ______
100.00 % 99.73 % = TOTAL OXIDE
Empirical Formula:
Na1.4 K0.2 Ba2 Ti2.6 Fe3+ 0.3 Al0.1 Si3.9 O15.2 (OH)2.7 1.62(H2 O)
Environment:
Secondary mineral formed under oxidizing conditions from a titianiferous nepheline syenite.
IMA Status:
Approved IMA 1987
Locality:
Diamond Jo quarry, Magnet Cove, Hot Springs County, Arkansas, USA. Link to MinDat.org Location Data.
Name Origin:
Named for Henry deLinde, long time mineral collector and owner of the Diamond Jo quarry.
Name Pronunciation:
Delindeite + Pronunciation
Delindeite Image
Images:
Delindeite Crystallography
Axial Ratios:
a:b:c =0.7769:1:3.1373
Cell Dimensions:
a = 5.327, b = 6.856, c = 21.51, Z = 2; beta = 93.8° V = 783.86 Den(Calc)= 3.76
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/m
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
Cleavage:
{001} Good
Color:
Gray pink.
Density:
3.3
Diaphaneity:
Translucent
Fracture:
Brittle - Irregular - Very brittle fracture producing irregular fragments
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Flakes - Flat, thin crystals or aggregates.
Luster:
Pearly
Streak:
white
Optical Properties of Delindeite
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
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
Electron Density:
Bulk Density (Electron Density)=3.51 gm/cc note: Specific Gravity of Delindeite =3.76 gm/cc.
Fermion Index:
Fermion Index = 0.07 Boson Index = 0.93
Photoelectric:
PEDelindeite = 136.56 barns/electronU=PEDelindeite x r electron = 479.86 barns/cc.
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
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
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
References:
NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2, AmMin v 87, p 999) OPTIC PROP.(AntBidBlaNic2)
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 :
Delindeite
Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2
Dana No: 56.02.06c.02 Strunz No: 09.BE.60
Locality:
Notes:
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