Lithiophosphate Mineral Data

General Lithiophosphate Information

Chemical Formula:

Li3PO4

Composition:

Molecular Weight = 115.79 gm

Lithium 17.98 % Li 38.71 % Li₂O

Phosphorus 26.75 % P 61.29 % P₂O₅

Oxygen 55.27 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Li₃(PO₄)

Environment:

Hydrothermal replacement of montebrasite in the core of a granite pegmatite in amphibolite.

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Mt. Okhmylk, VoronI massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for its content of lithium and phosphate.

Name Pronunciation:

Lithiophosphate + Pronunciation

Synonym:

ICSD 77095

PDF 25-1030

Lithiophosphate Image

Images:

Click Here for Larger Lithiophosphate Image

Lithiophosphate Lithiomarsturite

Comments: Tan-brown lithiomarsturite with cream-colored lithiophosphate in matrix.
Location: Foote Mine, Kings Mtn, North Carolina, USA. Scale: 2" x 3".
© Chris Wright / Wrights Rock Shop

Lithiophosphate Crystallography

Axial Ratios:

a:b:c =1.1684:1:0.9257

Cell Dimensions:

a = 6.1155, b = 5.234, c = 4.8452, Z = 2; V = 155.09 Den(Calc)= 2.48

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P mn2₁

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

By Intensity(I/I_o): 2.635(1), 3.965(1), 3.794(0.9),

Crystal Structure:

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Zemann J , Acta Crystallographica , 13 (1960) p.863-867, Die kristallstruktur von lithiumphosphat, Li3PO4

Physical Properties of Lithiophosphate

Cleavage:

{010} Perfect, {110} Distinct

Color:

Colorless, White, Light pink.

Density:

2.478

Diaphaneity:

Transparent

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Lithiophosphate

Gladstone-Dale:

CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2252,KPDmeas= 0.2254,KC= 0.231
Ncalc = 1.57

Optical Data:

Biaxial (+), a=1.55-1.553, b=1.557-1.558, g=1.566-1.567, bire=0.0140-0.0160, 2V(Calc)=74-84, 2V(Meas)=69-80.

Calculated Properties of Lithiophosphate

Electron Density:

Bulk Density (Electron Density)=2.40 gm/cc
note: Specific Gravity of Lithiophosphate =2.48 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Lithiophosphate}= 1.40 barns/electron
U=PE_{Lithiophosphate} x rElectron Density= 3.37 barns/cc.

Radioactivity:

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

Lithiophosphate Classification

Dana Class:

38.04.10.01 (38)Anhydrous Phosphates, etc

(38.04)A+ XO4

(38.04.10)Lithiophosphate Group

38.04.10.01 Lithiophosphate Li3PO4 P mn2₁ mm2

38.04.10.02 Olympite LiNa5(PO4)2 P 2₁2₁2₁ 2 2 2

38.04.10.03 Nalipoite NaLi2PO4 Pmnb 2/m 2/m 2/m

Strunz Class:

08.AA.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AA -With small cations (some also with larger ones)

08.AA.20 Lithiophosphate Li3PO4 P mn2₁ mm2

Other Lithiophosphate Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Lithiophosphate :
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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Print or Cut-and-Paste your Lithiophosphate Specimen Label here :

Lithiophosphate

Li3PO4
Dana No: 38.04.10.01 Strunz No: 08.AA.20
Locality:

Notes: