Nabaphite Mineral Data

Nabaphite Mineral Data +

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General Nabaphite Information

Chemical Formula:

NaBaPO4·9(H2O)

Composition:

Molecular Weight = 417.43 gm

Barium 32.90 % Ba 36.73 % BaO

Sodium 5.51 % Na 7.42 % Na₂O

Phosphorus 7.42 % P 17.00 % P₂O₅

Hydrogen 4.35 % H 38.84 % H₂O

Oxygen 49.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaBa(PO₄)·9(H₂O)

IMA Status:

Approved IMA 1982

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 410328

Nabaphite Image

Images:

Nabaphite

Comments: Translucent tetrahedral nabaphite microcrystal.
Location: Mount Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nabaphite Crystallography

Cell Dimensions:

a = 10.711, Z = 4; V = 1,228.83 Den(Calc)= 2.26

Crystal System:

Isometric - TetartoidalH-M Symbol (2 3) Space Group: P 2₁3

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

By Intensity(I/I_o): 2.598(1), 2.866(0.9), 5.36(0.8),

Crystal Structure:

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Baturin S V , Malinovskii Y A , Belov N V , Doklady Akademii Nauk SSSR , 266 (1982) p.624-627, The crystal structure of nabaphite NaBa[PO4]*9H2O

Physical Properties of Nabaphite

Cleavage:

[100] Distinct

Color:

Colorless.

Density:

2.3

Diaphaniety:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

2 - Gypsum

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Nabaphite

Gladstone-Dale:

CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.223,KPDmeas= 0.2191,KC= 0.2243

Optical Data:

Isotropic, n=1.504.

Calculated Properties of Nabaphite

Electron Density:

r_electron=2.21 gm/cc
note: r_Nabaphite=2.26 gm/cc.

Fermion Index

Fermion Index = 0.05887
Boson Index = 0.94113

Photoelectric:

PE_Nabaphite= 135.51 barns/electron
U=PE_Nabaphite x r_electron= 299.33 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Nabaphite is Not Radioactive

Nabaphite Classification

Dana Class:

40.1.3.2 (40)Hydrated Phosphates, etc

(40.1)where A++ B++ (XO4) · x(H2O)

(40.1.3)Dana Group

40.1.3.1 Nastrophite Na(Sr,Ba)(PO4)·9(H2O) P 2₁3 2 3

40.1.3.2 Nabaphite NaBaPO4·9(H2O) P 2₁3 2 3

Strunz Class:

VII/C.28-20 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+

VII/C.28 - Nastrophite - Nabaphite series

VII/C.28-10 Nastrophite Na(Sr,Ba)(PO4)·9(H2O) P 2₁3 2 3

VII/C.28-20 Nabaphite NaBaPO4·9(H2O) P 2₁3 2 3

Other Nabaphite 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 Nabaphite :
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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Nabaphite

NaBaPO4·9(H2O)
Dana No: 40.1.3.2 Strunz No: VII/C.28-20
Locality:

Notes: