Lindsleyite Mineral Data (original) (raw)

General Lindsleyite Information

Help on Chemical Formula: Chemical Formula:

(Ba,Sr)(Ti,Cr,Fe,Mg)21O38

Help on Composition: Composition:

Molecular Weight = 1,763.22 gm

Barium 5.84 % Ba 6.52 % BaO

Strontium 1.24 % Sr 1.47 % SrO

Magnesium 0.69 % Mg 1.14 % MgO

Titanium 35.30 % Ti 58.89 % TiO2

Chromium 17.69 % Cr 23.14 % CrO

Iron 4.75 % Fe 6.11 % FeO

Oxygen 34.48 % O

______ ______

100.00 % 97.28 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ba0.75Sr0.25Ti13Cr6Fe2+1.5Mg0.5O38

Help on Environment: Environment:

In kimberlite and peridotite nodules.

Help on IMA Status: IMA Status:

Approved IMA 1983

Help on Locality: Locality:

DeBeers mine, Kimberley, Cape Province, South Africa. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Donald H. Lindsley (1934-), mineralogist, Department of Earth Sciences, State University of New York at Stony Brook.

Help on Name Pronunciation: Name Pronunciation:

Lindsleyite + Pronunciation Say LINDSLEYITE

Help on Synonym: Synonym:

ICSD 81584

PDF 37-421

Lindsleyite Image

Click Here for Larger Lindsleyite Image in a New Browser Window Images:

Click Here for Larger Lindsleyite Image Lindsleyite Comments: Lindsleyite (L) enclosing chrome spinel (C) and surrounded by chrome diopside (Cpx). Sample JJG-360, Bultfontein. B&W reflected light in air. (AmMin, v68:494). Location: Metasomatized peridotites and heavy media concentrates from four kimberlites in the Republic of South Africa.Scale: Scale Bar 0.2 mm. © American Mineralogist

Lindsleyite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.97878

Help on Cell Dimensions: Cell Dimensions:

a = 10.37, c = 20.52, Z = 3; V = 1,911.02 Den(Calc)= 4.60

Help on Crystal System: Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 1.59(1), 1.8(1), 2.13(1),

Click Here for Large Lindsleyite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Help on Above

| | Peterson R C , Grey I E , The Canadian Mineralogist , 33 (1995) p.1083-1089, Preparation and structure refinement of synthetic Ti-containing, lindsleyite, BaMn3Ti18O38 | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Lindsleyite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Black.

Help on Density: Density:

4.63

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Help on Habit: Habit:

Aggregates - Made of numerous individual crystals or clusters.

Help on Habit: Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Help on Hardness: Hardness:

7.5 - Garnet

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

gray

Optical Properties of Lindsleyite

Help on Optical Data: Optical Data:

Uniaxial (?).

NCalc= 2.39 - from Gladstone-Dale relationship (KC = 0.3024) where Ncalc=Dcalc*KC+1
NCalc= 2.4 - from Gladstone-Dale relationship (KC = 0.3024) where Ncalc=Dmeas*KC+1

Help on RL Anisotrophism: RL Anisotrophism:

Weak, pale tan to brown.

Help on RL Color: RL Color:

Tan.

Help on RL Pleochroism: RL Pleochroism:

Weak, buff-white to tan.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Lindsleyite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
400 nm 19.40 19.80
420 nm 19.00 19.20
440 nm 18.60 18.90
460 nm 18.10 18.40
480 nm 17.80 18.10
500 nm 17.50 17.80
520 nm 17.20 17.50
540 nm 17.10 17.30
560 nm 16.90 17.10
580 nm 16.70 17.00
600 nm 16.70 16.90
620 nm 16.60 16.90
640 nm 16.50 16.80
660 nm 16.50 16.90
680 nm 16.50 16.90
700 nm 16.50 16.90

Calculated Relative Intensity Colors of Lindsleyite in Air

RelativeIntensity 0% 60% 100% 120% 180% 240% 300% 360% 420% 480% 520%
R1
R2

Calculated Properties of Lindsleyite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.33 gm/cc
note: Specific Gravity of Lindsleyite =4.60 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Help on Photoelectric: Photoelectric:

PELindsleyite = 37.77 barns/electron
U=PELindsleyite x rElectron Density= 163.66 barns/cc.

Help on Radioactivity: Radioactivity:

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

Lindsleyite Classification

Help on Dana Class: Dana Class:

08.05.01.08 (08)Multiple Oxides with Nb, Ta, and Ti

(08.05)Dana Type

(08.05.01)Crichtonite group (ABC18 T2 O38)

08.05.01.01 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

08.05.01.02 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

08.05.01.03 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

08.05.01.04 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

08.05.01.05 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

08.05.01.06 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

08.05.01.07 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

08.05.01.08 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

08.05.01.09 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

08.05.01.10 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

08.05.01.11 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Help on Strunz Class: Strunz Class:

04.CC.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.40 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

04.CC.40 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

04.CC.40 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

04.CC.40 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

04.CC.40 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Other Lindsleyite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic3)

Help on See Also: See Also:

Links to other databases for Lindsleyite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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Ask about Lindsleyite here :
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Print or Cut-and-Paste your Lindsleyite Specimen Label here :

Lindsleyite

(Ba,Sr)(Ti,Cr,Fe,Mg)21O38
Dana No: 08.05.01.08 Strunz No: 04.CC.40
Locality:

Notes: