Mineralogy Database

Arupite Mineral Data

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General Arupite Information

Help on Chemical  Formula: Chemical Formula: (Ni,Fe++)3(PO4)2•8(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: 3(Ni0.75)3(Mn2+0.75)3(Fe2+0.25)3(Mg0.25)(PO4)2�8(H2O)
Help on Environment: Environment: A weathering product of a nickel-rich iron meteorite.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: In the Santa Catherina iron meteorite. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: To honor Hans Henning Arup (1928- ), Director of the Danish Corrosion Center, Copenhagen, Denmark.
Help on Name Pronunciation: Name Pronunciation: Arupite Say ARUPITE
Help on Synonym: Synonym: IMA1988-008

Arupite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7477:1:0.3512
Help on Cell Dimensions: Cell Dimensions: a = 9.889, b = 13.225, c = 4.645, Z = 2; beta = 102.41° V = 593.29 Den(Calc)= 5.51
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: I2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.624(1), 2.922(0.72), 4.818(0.61),

Physical Properties of Arupite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Blue, Turquoise blue.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: light blue

Optical Properties of Arupite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.486 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1187,KC= 0.2309
Ncalc = 2.27
Help on Optical Data: 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

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.55 gm/cc
note: Specific Gravity of Arupite =5.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0045264687
Boson Index = 0.9954735313
Help on Photoelectric: Photoelectric: PEArupite = 10.21 barns/electron
U=PEArupite x rElectron Density= 56.70 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arupite is Not Radioactive

Arupite Classification

Help on  Dana Class: Dana Class: (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 � x(H2O)
  (40.03.06)Vivianite Group Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
Help on  Strunz Class: 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

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.75,p1209,1990) OPTIC PROP.(Am.Min.,Vol.75,p1209,1990)
Help on See Also: 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

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Dana No: Strunz No: 08.CE.40





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