Wicksite Mineral Data

Wicksite Mineral Data +

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General Wicksite Information

Chemical Formula:

NaCa2(Fe++,Mn++)4MgFe+++(PO4)6·2(H2O)

Composition:

Molecular Weight = 1,011.64 gm

Sodium 2.27 % Na 3.06 % Na₂O

Calcium 7.92 % Ca 11.09 % CaO

Magnesium 2.40 % Mg 3.98 % MgO

Manganese 5.43 % Mn 7.01 % MnO

Iron 22.08 % Fe 21.31 % FeO / 7.89 % Fe₂O₃

Phosphorus 18.37 % P 42.09 % P₂O₅

Hydrogen 0.40 % H 3.56 % H₂O

Oxygen 41.12 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaCa₂4(Fe²⁺_0.75)4(Mn²⁺_0.25)MgFe³⁺(PO₄)₆·2(H₂O)

IMA Status:

Approved IMA 1981

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 76610

IMA1979-019

PDF 35-512

Wicksite Image

Images:

Wicksite Wolfeite

Comments: Cleaved nodule of fine-grained aggregate of wicksite and wolfeite.
Location: Big Fish River, Yukon, Canada. Scale: 3 x 1.5 cm.
© Dave Barthelmy

Wicksite Crystallography

Axial Ratios:

a:b:c =1.0307:1:0.9299

Cell Dimensions:

a = 12.896, b = 12.511, c = 11.634, Z = 4; V = 1,877.05 Den(Calc)= 3.58

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 2.753(1), 2.91(0.8), 3.015(0.8),

Crystal Structure:

Mouse
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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Cooper M A , Hawthorne F C , The Canadian Mineralogist , 35 (1997) p.777-784, The crystal structure of wicksite

Physical Properties of Wicksite

Cleavage:

[010] Good

Color:

Bluish black, Dark blue, Black.

Density:

3.54

Hardness:

4.5-5 - Near Apatite

Luster:

Sub Metallic

Streak:

green

Optical Properties of Wicksite

Optical Data:

Biaxial (+), a=1.713, b=1.718, g=1.728, bire=0.0150, 2V(Calc)=72, 2V(Meas)=66.

Calculated Properties of Wicksite

Electron Density:

r_electron=3.50 gm/cc
note: r_Wicksite=3.58 gm/cc.

Fermion Index

Fermion Index = 0.00738
Boson Index = 0.99262

Photoelectric:

PE_Wicksite= 9.92 barns/electron
U=PE_Wicksite x r_electron= 34.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wicksite is Not Radioactive

Wicksite Classification

Dana Class:

40.2.10.1 (40)Hydrated Phosphates, etc

(40.2)where A++ (B++)2 (XO4) · x(H2O)

(40.2.10)Dana Group

40.2.10.1 Wicksite NaCa2(Fe,Mn)4MgFe(PO4)6·2(H2O) P bca 2/m 2/m 2/m

40.2.10.2 Bederite! ([],Na)Ca2(Mn,Mg,Fe)2(Fe,Mg,Al)2Mn2(PO4)6·2(H2O) Pcab 2/m 2/m 2/m

Strunz Class:

VII/C.18-10 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.18 - Wicksite - Alentaite series

VII/C.18-10 Wicksite NaCa2(Fe,Mn)4MgFe(PO4)6·2(H2O) P bca 2/m 2/m 2/m

VII/C.18-15 Bederite! ([],Na)Ca2(Mn,Mg,Fe)2(Fe,Mg,Al)2Mn2(PO4)6·2(H2O) Pcab 2/m 2/m 2/m

VII/C.18-20 Grischunite NaCa2Mn5Fe(AsO4)6·2(H2O) Pcab 2/m 2/m 2/m

VII/C.18-30 Walentaite (Ca,Mn,Fe)Fe3(AsO4)(PO4)3(PO3OH) I mmm, I bam, I bca, I mma Ortho

VII/C.18-35 Mereiterite! K2Fe(SO4)2·4(H2O) C 2/m 2/m

Other Wicksite 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 Wicksite :
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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Wicksite

NaCa2(Fe++,Mn++)4MgFe+++(PO4)6·2(H2O)
Dana No: 40.2.10.1 Strunz No: VII/C.18-10
Locality:

Notes: