Arupite Mineral Data

Arupite Mineral Data +

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General Arupite Information

Chemical Formula:

(Ni,Fe++)3(PO4)2·8(H2O)

Composition:

Molecular Weight = 983.91 gm

Magnesium 1.85 % Mg 3.07 % MgO

Manganese 12.56 % Mn 16.22 % MnO

Iron 4.26 % Fe 5.48 % FeO

Nickel 13.42 % Ni 17.08 % NiO

Phosphorus 12.59 % P 28.85 % P₂O₅

Hydrogen 3.28 % H 29.30 % H₂O

Oxygen 52.04 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

3(Ni_0.75)3(Mn²⁺_0.75)3(Fe²⁺_0.25)3(Mg_0.25)(PO₄)₂·8(H₂O)

Environment:

A weathering product of a nickel-rich iron meteorite.

IMA Status:

Approved IMA 1990

Locality:

In the Santa Catherina iron meteorite. Link to MinDat.org Location Data.

Name Origin:

To honor Hans Henning Arup (1928- ), Director of the Danish Corrosion Center, Copenhagen, Denmark.

Synonym:

IMA1988-008

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Arupite Crystallography

Axial Ratios:

a:b:c =0.7477:1:0.3512

Cell Dimensions:

a = 9.889, b = 13.225, c = 4.645, Z = 2; beta = 102.41° V = 593.29 Den(Calc)= 5.51

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m

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

By Intensity(I/I_o): 6.624(1), 2.922(0.72), 4.818(0.61),

Physical Properties of Arupite

Cleavage:

[???] Good

Color:

Blue, Turquoise blue.

Diaphaniety:

Translucent

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Earthy (Dull)

Streak:

light blue

Optical Properties of Arupite

Gladstone-Dale:

CI calc= 0.486 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1187,KC= 0.2309

Optical Data:

Biaxial (+), a=1.632, b=1.65, g=1.68, bire=0.0480, 2V(Calc)=78, 2V(Meas)=60-70.

Calculated Properties of Arupite

Electron Density:

r_electron=5.55 gm/cc
note: r_Arupite=5.51 gm/cc.

Fermion Index

Fermion Index = 0.00452
Boson Index = 0.99548

Photoelectric:

PE_Arupite= 10.21 barns/electron
U=PE_Arupite x r_electron= 56.70 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Arupite is Not Radioactive

Arupite Classification

Dana Class:

40.3.6.8 (40)Hydrated Phosphates, etc

(40.3)where (A++)3 (XO4)2 · x(H2O)

(40.3.6)Dana Group

40.3.6.1 Vivianite Fe3(PO4)2·8(H2O) C 2/m 2/m

40.3.6.2 Baricite (Mg,Fe)3(PO4)2·8(H2O) C 2/m 2/m

40.3.6.3 Erythrite Co3(AsO4)2·8(H2O) I2/m 2/m

40.3.6.4 Annabergite Ni3(AsO4)2·8(H2O) I2/m 2/m

40.3.6.5 Kottigite Zn3(AsO4)2·8(H2O) C 2/m 2/m

40.3.6.6 Parasymplesite Fe3(AsO4)2·8(H2O) C 2/m 2/m

40.3.6.7 Hornesite Mg3(AsO4)2·8(H2O) I2/m 2/m

40.3.6.8 Arupite (Ni,Fe)3(PO4)2·8(H2O) I2/m 2/m

40.3.6.9 IMA2004-021! Co3(PO4)2·8(H2O) C 2/m 2/m

Strunz Class:

VII/C.13-45 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg

VII/C.13 - Vivianite group

VII/C.13-10 Bobierrite Mg3(PO4)2·8(H2O) C 2/c 2/m

VII/C.13-20* Cattiite! Mg3(PO4)2·22(H2O) P1 1

VII/C.13-20 Manganese-hornesite (Mn,Mg)3(AsO4)2·8(H2O) P 2₁/c 2/m

VII/C.13-30 Baricite (Mg,Fe)3(PO4)2·8(H2O) C 2/m 2/m

VII/C.13-40 Vivianite Fe3(PO4)2·8(H2O) C 2/m 2/m

VII/C.13-45 Arupite (Ni,Fe)3(PO4)2·8(H2O) I2/m 2/m

VII/C.13-50 Hornesite Mg3(AsO4)2·8(H2O) I2/m 2/m

VII/C.13-60 Parasymplesite Fe3(AsO4)2·8(H2O) C 2/m 2/m

VII/C.13-70 Erythrite Co3(AsO4)2·8(H2O) I2/m 2/m

VII/C.13-80 Annabergite Ni3(AsO4)2·8(H2O) I2/m 2/m

VII/C.13-90 Kottigite Zn3(AsO4)2·8(H2O) C 2/m 2/m

Other Arupite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.75,p1209,1990) OPTIC PROP.(Am.Min.,Vol.75,p1209,1990)

See Also:

Links to other databases for Arupite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

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Arupite

(Ni,Fe++)3(PO4)2·8(H2O)
Dana No: 40.3.6.8 Strunz No: VII/C.13-45
Locality:

Notes: