Maricite Mineral Data

Maricite Mineral Data +

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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)

IMA Status:

Approved IMA 1977

Locality:

Link to MinDat.org Location Data.

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 - DipyramidalH-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),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
A - Atoms On/Off
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Le Page Y , Donnay G , The Canadian Mineralogist , 15 (1977) p.518-521, The crystal structure of the new mineral maricite, NaFePO4

Physical Properties of Maricite

Cleavage:

None

Color:

Colorless, Gray, Gray white, Light brown.

Density:

3.66

Diaphaniety:

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

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:

r_electron=3.59 gm/cc
note: r_Maricite=3.71 gm/cc.

Fermion Index

Fermion Index = 0.00698
Boson Index = 0.99302

Photoelectric:

PE_Maricite= 10.72 barns/electron
U=PE_Maricite x r_electron= 38.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Maricite is Not Radioactive

Maricite Classification

Dana Class:

38.1.2.1 (38)Anhydrous Phosphates, etc

(38.1)A+ B++ XO4

(38.1.2)Dana Group

38.1.2.1 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

38.1.2.2 Buchwaldite NaCaPO4 P mn2₁ mm2

Strunz Class:

VII/A.02-70 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions. cations of medium size: Mostly Fe, Mn

VII/A.02 - Simferrite - Natrophilite series

VII/A.02-05 Simferite Li(Mg,Fe,Mn)2(PO4)2 Pbnm,Pbn21 Ortho

VII/A.02-10 Triphylite LiFePO4 Pbnm 2/m 2/m 2/m

VII/A.02-20 Lithiophilite LiMnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-30 Ferrisicklerite Li(Fe,Mn)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-40 Sicklerite Li(Mn,Fe)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-50 Heterosite FePO4 Pmnb 2/m 2/m 2/m

VII/A.02-60 Purpurite MnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-70 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

VII/A.02-80 Natrophilite NaMnPO4 Pnam 2/m 2/m 2/m

Other Maricite 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 Maricite :
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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Maricite

NaFe++PO4
Dana No: 38.1.2.1 Strunz No: VII/A.02-70
Locality:

Notes: