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.

Name Pronunciation:

Arupite

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.

Diaphaneity:

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
Ncalc = 2.27

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:

Bulk Density (Electron Density)=5.55 gm/cc
note: Specific Gravity of Arupite =5.51 gm/cc.

Fermion Index:

Fermion Index = 0.0045264687
Boson Index = 0.9954735313

Photoelectric:

PE_Arupite= 10.21 barns/electron
U=PE_Arupite x rElectron Density= 56.70 barns/cc.

Radioactivity:

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

Arupite Classification

Dana Class:

40.03.06.08 (40)Hydrated Phosphates, etc

(40.03)where (A++)3 (XO4)2 · x(H2O)

(40.03.06)Vivianite Group

40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m

40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m

40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m

40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m

40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m

40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m

Strunz Class:

08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CE -With only medium-sized cations, RO4:H2O £ 1:2.5

08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m

08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m

08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None

08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m

08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 2₁/c 2/m

08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m

08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m

08.CE.40 Pakhomovskyite! Co3(PO4)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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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Ask about Arupite here :
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Print or Cut-and-Paste your Arupite Specimen Label here :

Arupite

(Ni,Fe++)3(PO4)2•8(H2O)
Dana No: 40.03.06.08 Strunz No: 08.CE.40
Locality:

Notes: