Lithiophorite Mineral Data

Lithiophorite Mineral Data +

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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".

Synonym:

ICSD 75283

PDF 41-1378

Wad

Lithiophorite Image

Images:

Lithiophorite

Comments: Black Lithiophorite cementing gravel.
Location: P?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

Diaphaniety:

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 (?).

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:

r_electron=3.30 gm/cc
note: r_{Lithiophorite}=3.39 gm/cc.

Fermion Index

Fermion Index = 0.00131
Boson Index = 0.99869

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lithiophorite is Not Radioactive

Lithiophorite Classification

Dana Class:

6.4.1.1 (6)Hydroxides and Oxides Containing Hydroxyl

(6.4)containing multiple cations

(6.4.1)Dana Group

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

6.4.1.2 Quenselite PbMnO2(OH) P 2 2

Strunz Class:

IV/F.07-10 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.07 - Lithiophorite - Grimaldiite series

IV/F.07-10 Lithiophorite (Al,Li)MnO2(OH)2 R 3m 3 2/m

IV/F.07-20 Asbolane (Co,Ni)1-y(MnO2)2-x(OH)2-2y2x·n(H2O) Unk Hex

IV/F.07-30 Heterogenite-2H CoO(OH) P 6₃/mmc 6/m 2/m 2/m

IV/F.07-40 Heterogenite-3R CoO(OH) R 3m 3 2/m

IV/F.07-50 Bracewellite CrO(OH) Pbnm 2/m 2/m 2/m

IV/F.07-60 Guyanaite CrO(OH) Pnnm 2/m 2/m 2/m

IV/F.07-70 Grimaldiite CrO(OH) 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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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

Lithiophorite

(Al,Li)Mn++++O2(OH)2
Dana No: 6.4.1.1 Strunz No: IV/F.07-10
Locality:

Notes: