Galileiite Mineral Data

Galileiite Mineral Data +

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General Galileiite Information

Chemical Formula:

NaFe++4(PO4)3

Composition:

Molecular Weight = 531.29 gm

Sodium 4.33 % Na 5.83 % Na₂O

Iron 42.05 % Fe 54.09 % FeO

Phosphorus 17.49 % P 40.08 % P₂O₅

Oxygen 36.14 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaFe²⁺₄(PO₄)₃

Environment:

In troilite nodules found in meteorites.

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

Meteorites Grant IIIB, in the Zuni Mountains, New Mexico, USA; El Sampal IIIA, Argentina: Mount Edith IIIB, western Australia. Link to MinDat.org Location Data.

Name Origin:

For Galileo Galilei (1564-1642), Italian astronomer and physicist.

Synonym:

IMA1996-028

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Galileiite Crystallography

Axial Ratios:

a:c = 1:2.78104

Cell Dimensions:

a = 14.98, c = 41.66, Z = 35; V = 8,096.06 Den(Calc)= 3.81

Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3

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

By Intensity(I/I_o): 2.71(1), 3.01(0.9), 4.13(0.8),

Physical Properties of Galileiite

Cleavage:

None

Color:

Very pale amber brown.

Density:

3.91

Diaphaniety:

Transparent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4 - Fluorite

Luster:

Waxy

Streak:

white

Optical Properties of Galileiite

Gladstone-Dale:

CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.037 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1929,KPDmeas= 0.188,KC= 0.1861

Optical Data:

Uniaxial (+), w=1.72, e=1.75, bire=0.0300.

Calculated Properties of Galileiite

Electron Density:

r_electron=3.77 gm/cc
note: r_Galileiite=3.91 gm/cc.

Fermion Index

Fermion Index = 0.00908
Boson Index = 0.99092

Photoelectric:

PE_Galileiite= 13.59 barns/electron
U=PE_Galileiite x r_electron= 51.20 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Galileiite is Not Radioactive

Galileiite Classification

Dana Class:

38.2.5.4 (38)Anhydrous Phosphates, etc

(38.2)(A+ B++)5 (XO4)3

(38.2.5)Dana Group

38.2.5.1 Fillowite Na2Ca(Mn,Fe)7(PO4)6 R 3 3

38.2.5.2 Johnsomervilleite Na2Ca(Mg,Fe,Mn)7(PO4)6 R 3 3

38.2.5.3 Chladniite Na2Ca(Mg,Fe)7(PO4)6 R 3 3

38.2.5.4 Galileiite ! NaFe4(PO4)3 R 3 3

Strunz Class:

VII/A.08-03 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of medium and big size: Mg, Mn,Fe, Cu, Zn, and Ca, Na

VII/A.08 - Chladniite - Berzeliite - Palenzonaite series

VII/A.08-03 Galileiite NaFe4(PO4)3 R 3 3

VII/A.08-05 Chladniite Na2Ca(Mg,Fe)7(PO4)6 R 3 3

VII/A.08-10 Johnsomervilleite Na2Ca(Mg,Fe,Mn)7(PO4)6 R 3 3

VII/A.08-20 Fillowite Na2Ca(Mn,Fe)7(PO4)6 R 3 3

VII/A.08-30 Berzeliite (Ca,Na)3(Mg,Mn)2(AsO4)3 I a3d 4/m 3 2/m

VII/A.08-40 Manganberzeliite (Ca,Na)3(Mn,Mg)2(AsO4)3 I a3d 4/m 3 2/m

VII/A.08-45 Schaferite! NaCa2Mg2(VO4)3 I a3d 4/m 3 2/m

VII/A.08-50 Palenzonaite (Ca,Na)3Mn(V,As,Si)3O12 I a3d 4/m 3 2/m

Other Galileiite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p185,1998) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Galileiite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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

Galileiite

NaFe++4(PO4)3
Dana No: 38.2.5.4 Strunz No: VII/A.08-03
Locality:

Notes: