Lindqvistite Mineral Data

Lindqvistite Mineral Data +

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General Lindqvistite Information

Chemical Formula:

Pb2(Mn++,Mg)Fe+++16027

Composition:

Molecular Weight = 1,764.16 gm

Magnesium 0.96 % Mg 1.60 % MgO

Manganese 4.05 % Mn 5.23 % MnO

Iron 46.85 % Fe 66.98 % Fe₂O₃

Silicon 0.16 % Si 0.34 % SiO₂

Lead 23.49 % Pb 25.30 % PbO

Oxygen 24.49 % O

______ ______

100.00 % 99.46 % = TOTAL OXIDE

Empirical Formula:

Pb₂Mn²⁺_1.3Mg_0.7Fe³⁺_14.8Si_0.1O₂₇

Environment:

Regionally metamorphosed lead-bearing Fe-Mn skarn deposit.

IMA Status:

Approved IMA 1993

Locality:

Jokobsberg, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Bengt Lindqvist (1927-), formerly Senior Curator of the Swedish Museum of Natural History, Stockholm, Sweden.

Synonym:

ICSD 74013

IMA1991-038

PDF 46-1461

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Lindqvistite Crystallography

Axial Ratios:

a:c = 1:5.60544

Cell Dimensions:

a = 5.951, c = 33.358, Z = 2; V = 1,023.08 Den(Calc)= 5.73

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mmc

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

By Intensity(I/I_o): 2.624(1), 2.802(0.95), 2.612(0.9),

Crystal Structure:

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Holtstam D , Norrestam R , American Mineralogist , 78 (1993) p.1304-1312, Lindqvistite, Pb2MeFe16O27, a novel hexagonal ferrite mineral from Jakobsberg,, Filipstad, Sweden

Physical Properties of Lindqvistite

Cleavage:

[0001] Perfect

Color:

Black.

Density:

5.76

Diaphaniety:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

6 - Orthoclase

Luster:

Sub Metallic

Streak:

brownish black

Optical Properties of Lindqvistite

Optical Data:

Uniaxial (?).

NCalc= 2.48 - from Gladstone-Dale relationship (KC = 0.2589) where Ncalc=Dcalc*KC+1
NCalc= 2.49 - from Gladstone-Dale relationship (KC = 0.2589) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Moderate, in bluish gray to browns.

RL Bireflectance:

Weak.

RL Color:

Gray with a faint brownish tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Lindqvistite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	23.70	22.00
546 nm	22.70	21.50
589 nm	22.00	21.10
650 nm	21.30	20.70

**Calculated Relative Intensity Colors of Lindqvistite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	420%
R₁
R₂

Calculated Properties of Lindqvistite

Electron Density:

r_electron=5.24 gm/cc
note: r_Lindqvistite=5.73 gm/cc.

Fermion Index

Fermion Index = 0.063
Boson Index = 0.937

Photoelectric:

PE_Lindqvistite= 410.11 barns/electron
U=PE_Lindqvistite x r_electron=2,150.17 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lindqvistite is Not Radioactive

Lindqvistite Classification

Dana Class:

7.11.15.1 (7)Multiple Oxides

(7.11)as titano-oxides with [4] and [6] substitutions

(7.11.15)Dana Group

7.11.15.1 Lindqvistite Pb2(Mn,Mg)Fe16027 P 6₃/mmc 6/m 2/m 2/m

Strunz Class:

IV/C.08-47 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.08 - Yimngite - Otjisumeite series

IV/C.08-10 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-20 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-22 Haggertyite! Ba[Fe6Ti5Mg]O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-25 Batiferrite! Ba(Ti2Fe8Fe2)O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-30 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-35 Nezilovite! PbZn2(Mn,Ti)2Fe8O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-40 Magnetoplumbite Pb(Fe,Mn)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-45 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 6₃/mcm 6/m 2/m 2/m

IV/C.08-47 Lindqvistite Pb2(Mn,Mg)Fe16027 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-50 Plumboferrite Pb2Fe(11-x)MnxO19-2x(x=1/3) P 6₃/mmc 6/m 2/m 2/m

IV/C.08-60 Bartelkeite PbFeGe3O8 P 2₁,P 2₁/m Mono

IV/C.08-70 Otjisumeite PbGe4O9 P1,P 1 Tri

Other Lindqvistite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.78,p1304-1312,1993) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Lindqvistite :
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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Lindqvistite

Pb2(Mn++,Mg)Fe+++16027
Dana No: 7.11.15.1 Strunz No: IV/C.08-47
Locality:

Notes: