Lithiophosphate Mineral Data
General Lithiophosphate Information
Chemical Formula:
Li3PO4
Composition:
Molecular Weight = 115.79 gm
Lithium 17.98 % Li 38.71 % Li2 O
Phosphorus 26.75 % P 61.29 % P2 O5
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:
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 - Pyramidal H-M Symbol (mm2) Space Group: P mn21
X Ray Diffraction:
By Intensity(I/Io ): 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
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:
PELithiophosphate = 1.40 barns/electronU=PELithiophosphate x r Electron 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 21 21 21 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:
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