Lithiophorite Mineral Data

General Lithiophorite Information

Chemical Formula:

(Al,Li)Mn++++O2(OH)2

Composition:

Molecular Weight = 141.92 gm

Lithium 1.47 % Li 3.16 % Li₂O

Manganese 38.71 % Mn 16.69 % Mn₂O₃ / 42.88 % MnO₂

Aluminum 13.31 % Al 25.15 % Al₂O₃

Hydrogen 1.42 % H 12.69 % H₂O

Oxygen 45.09 % O

______ ______

100.00 % 100.56 % = TOTAL OXIDE

Empirical Formula:

Al_0.7Li_0.3Mn⁴⁺_0.7Mn³⁺_0.3O₂(OH)₂

Environment:

Common constituent of "Wad" in the oxidized zones of hydrothermal ore deposits and sedimentary manganese deposits.

IMA Status:

Valid Species (Pre-IMA) 1870

Locality:

White Oak mountain, Bradley County, Tennessee, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the content of LITHIum and the Greek for "to bear".

Name Pronunciation:

Lithiophorite + Pronunciation

Synonym:

ICSD 75283

PDF 41-1378

Wad

Lithiophorite Image

Images:

Lithiophorite

Comments: Black Lithiophorite cementing gravel.
Location: PÃ¶hlberg, Annaberg - Buchholz, Erzgebirge, Saxony, Germany. Scale: Specimen size 6 cm.
© Thomas Witzke / Abraxas-Verlag

Lithiophorite Crystallography

Axial Ratios:

a:c = 1:9.63141

Cell Dimensions:

a = 2.9247, c = 28.169, Z = 3; V = 208.67 Den(Calc)= 3.39

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 4.714(1), 3.143(0.7), 9.428(0.68),1.453(0.4), 2.371(0.24), 1.88(0.14),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
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Post J E , Appleman D E , American Mineralogist , 79 (1994) p.370-374, Crystal structure refinement of lithiophorite, Note: U(1,2) for Mn/Al/Li/O2 have been altered to match symmetry constraints.

Physical Properties of Lithiophorite

Cleavage:

{0001} Perfect

Color:

Bluish black, Black.

Density:

3.14 - 3.37, Average = 3.25

Diaphaneity:

Opaque

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Botryoidal - "Grape-like" rounded forms (e.g.. malachite).

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic - Dull

Streak:

blackish gray

Optical Properties of Lithiophorite

Optical Data:

Uniaxial (?).

NCalc= 2.1 - from Gladstone-Dale relationship (KC = 0.3241) where Ncalc=Dcalc*KC+1
NCalc= 2.05 - from Gladstone-Dale relationship (KC = 0.3241) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Extreme, ligh gray to dark brown to bluish gray.

RL Color:

Light gray to dark brownish gray.

RL Pleochroism:

Very strong.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Lithiophorite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	15.70	34.90
420 nm	14.00	31.30
440 nm	12.30	27.70
460 nm	11.20	24.90
480 nm	10.60	23.00
500 nm	10.20	21.90
520 nm	10.00	21.00
540 nm	9.80	20.40
560 nm	9.60	19.70
580 nm	9.50	19.20
600 nm	9.40	18.90
620 nm	9.30	18.60
640 nm	9.30	18.40
660 nm	9.30	18.40
680 nm	9.30	18.30
700 nm	9.30	18.20

**Calculated Relative Intensity Colors of Lithiophorite in Air**
Relative Intensity	0%	90%	100%	180%	270%	360%	450%	540%	630%	720%	810%	890%
R₁
R₂

Calculated Properties of Lithiophorite

Electron Density:

Bulk Density (Electron Density)=3.30 gm/cc
note: Specific Gravity of Lithiophorite =3.39 gm/cc.

Fermion Index:

Fermion Index = 0.0013190004
Boson Index = 0.9986809996

Photoelectric:

PE_{Lithiophorite}= 10.31 barns/electron
U=PE_{Lithiophorite} x rElectron Density= 33.98 barns/cc.

Radioactivity:

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

Lithiophorite Classification

Dana Class:

06.04.01.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.04)containing multiple cations

(06.04.01)Dana Group

06.04.01.01 Lithiophorite (Al,Li)MnO2(OH)2 R 3m 3 2/m

06.04.01.02 Quenselite PbMnO2(OH) P 2 2

Strunz Class:

04.FE.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra

04.FE.25 Feitknechtite beta-MnO(OH) Unk Hex

04.FE.25 Lithiophorite (Al,Li)MnO2(OH)2 R 3m 3 2/m

Other Lithiophorite Information

References:

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

See Also:

Links to other databases for Lithiophorite :
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
15 - WWW-MINCRYST

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Ask about Lithiophorite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Lithiophorite

(Al,Li)Mn++++O2(OH)2
Dana No: 06.04.01.01 Strunz No: 04.FE.25
Locality:

Notes: