Lithiophosphate Mineral Data

Lithiophosphate Mineral Data +

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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)

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Link to MinDat.org Location Data.

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),

Physical Properties of Lithiophosphate

Cleavage:

[010] Perfect, [110] Distinct

Color:

Colorless, White, Light pink.

Density:

2.478

Diaphaniety:

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

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:

r_electron=2.40 gm/cc
note: r_{Lithiophosphate}=2.48 gm/cc.

Fermion Index

Fermion Index = 0.01375
Boson Index = 0.98625

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lithiophosphate is Not Radioactive

Lithiophosphate Classification

Dana Class:

38.4.10.1 (38)Anhydrous Phosphates, etc

(38.4)A+ XO4

(38.4.10)Dana Group

38.4.10.1 Lithiophosphate Li3PO4 P mn2₁ mm2

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

38.4.10.3 Nalipoite NaLi2PO4 Pmnb 2/m 2/m 2/m

Strunz Class:

VII/A.01-20 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of small size: Li, Be, Al

VII/A.01 - Berlinite - Beryllonite - Hurlbutite series

VII/A.01-10 Berlinite AlPO4 P 3₁21,P 3₂21 3 2

VII/A.01-12 Alarsite! AlAsO4 P 3₁21,P 3₂21 3 2

VII/A.01-15 Rodolicoite! FePO4 R 3121 3 2

VII/A.01-20 Lithiophosphate Li3PO4 P mn2₁ mm2

VII/A.01-25 Nalipoite NaLi2PO4 Pmnb 2/m 2/m 2/m

VII/A.01-30 Beryllonite NaBePO4 P 2₁/n 2/m

VII/A.01-40 Hurlbutite CaBe2(PO4)2 P 2₁/a 2/m

Other Lithiophosphate Information

References:

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

Lithiophosphate

Li3PO4
Dana No: 38.4.10.1 Strunz No: VII/A.01-20
Locality:

Notes: