Maricite Mineral Data

General Maricite Information

Chemical Formula:

NaFe++PO4

Composition:

Molecular Weight = 173.81 gm

Sodium 13.23 % Na 17.83 % Na₂O

Iron 32.13 % Fe 41.34 % FeO

Phosphorus 17.82 % P 40.83 % P₂O₅

Oxygen 36.82 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaFe²⁺(PO₄)

Environment:

In phosphatic nodules in sideritic ironstones.

IMA Status:

Approved IMA 1977

Locality:

Big Fish River area, Yukon Territory, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Luka Maric (1899-?), Professor of Mineralogy and Petrology, University of Zagreb, Croatia.

Name Pronunciation:

Maricite

Synonym:

ICSD 200111

IMA1976-024

PDF 29-1216

Maricite Image

Images:

Maricite Vivianite

Comments: Brown maricite nodule with internal radiating structure, with blue vivianite.
Location: Big Fish River, Yukon Territory, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Maricite Crystallography

Axial Ratios:

a:b:c =0.7639:1:0.5612

Cell Dimensions:

a = 6.867, b = 8.989, c = 5.045, Z = 4; V = 311.42 Den(Calc)= 3.71

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmnb

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

By Intensity(I/I_o): 2.574(1), 2.729(0.9), 2.707(0.8),

Physical Properties of Maricite

Cleavage:

None

Color:

Colorless, Gray, Gray white, Light brown.

Density:

3.66

Diaphaneity:

Transparent to Translucent

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Maricite

Gladstone-Dale:

CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1859,KPDmeas= 0.1884,KC= 0.1863
Ncalc = 1.68 - 1.69

Optical Data:

Biaxial (-), a=1.676, b=1.695, g=1.698, bire=0.0220, 2V(Calc)=42, 2V(Meas)=43.

Calculated Properties of Maricite

Electron Density:

Bulk Density (Electron Density)=3.59 gm/cc
note: Specific Gravity of Maricite =3.71 gm/cc.

Fermion Index:

Fermion Index = 0.0069885986
Boson Index = 0.9930114014

Photoelectric:

PE_Maricite= 10.72 barns/electron
U=PE_Maricite x rElectron Density= 38.46 barns/cc.

Radioactivity:

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

Maricite Classification

Dana Class:

38.01.02.01 (38)Anhydrous Phosphates, etc

(38.01)A+ B++ XO4

(38.01.02)Dana Group

38.01.02.01 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

38.01.02.02 Buchwaldite NaCaPO4 P mn2₁ mm2

Strunz Class:

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

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

08.AC -With medium-sized and large cations

08.AC.20 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

Other Maricite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Maricite :
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 Maricite Specimen Label here :

Maricite

NaFe++PO4
Dana No: 38.01.02.01 Strunz No: 08.AC.20
Locality:

Notes:

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