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Arupite Mineral Data
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General Arupite Information
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 Chemical Formula: |
(Ni,Fe++)3(PO4)2•8(H2O) |
| Composition: |
Molecular Weight = 983.91 gm |
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Magnesium 1.85 % Mg 3.07 % MgO |
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Manganese 12.56 % Mn 16.22 % MnO |
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Iron 4.26 % Fe 5.48 % FeO |
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Nickel 13.42 % Ni 17.08 % NiO |
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Phosphorus 12.59 % P 28.85 % P2O5 |
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Hydrogen 3.28 % H 29.30 % H2O |
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Oxygen 52.04 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
3(Ni0.75)3(Mn2+0.75)3(Fe2+0.25)3(Mg0.25)(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
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| 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 - Prismatic H-M Symbol (2/m) Space Group: I2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 6.624(1), 2.922(0.72), 4.818(0.61), |
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Physical Properties of Arupite
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| Cleavage: |
{???} Good |
| Color: |
Blue, Turquoise blue. |
| Diaphaneity: |
Translucent |
| Hardness: |
1.5-2 - Talc-Gypsum |
| Luster: |
Earthy (Dull) |
| Streak: |
light blue |
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Optical Properties of Arupite
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| 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. |
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Calculated Properties of Arupite
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| Electron Density: |
Bulk Density (Electron Density)=5.55 gm/cc
note: Specific Gravity of Arupite =5.51 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0045264687
Boson Index = 0.9954735313 |
| Photoelectric: |
PEArupite = 10.21 barns/electron
U=PEArupite x rElectron Density= 56.70 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arupite is Not Radioactive |
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Arupite Classification
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| Dana Class: |
40.03.06.08 (40)Hydrated Phosphates, etc |
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(40.03)where (A++)3 (XO4)2 � x(H2O) |
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(40.03.06)Vivianite Group |
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40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m |
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40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m |
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40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m |
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40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m |
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40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m |
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40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m |
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40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m |
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40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m |
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40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m |
| Strunz Class: |
08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.C - Phosphates without Additional Anions, with H2O |
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08.CE -With only medium-sized cations, RO4:H2O � 1:2.5 |
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08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m |
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08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m |
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08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m |
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08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m |
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08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None |
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08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m |
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08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m |
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08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 21/c 2/m |
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08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m |
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08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m |
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08.CE.40 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m |
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Other Arupite Information
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| 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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Print or Cut-and-Paste your Arupite Specimen Label here :
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Arupite
(Ni,Fe++)3(PO4)2•8(H2O)
Dana No: 40.03.06.08 Strunz No: 08.CE.40
Locality:
Notes:
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