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Arupite

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Formula:
Ni
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
System:MonoclinicColour:Blue to light blue
Hardness:1½ - 2
Member of:Vivianite Group
Name:Named in 1990 by Vagn Fabius Buchwald in honor of Hans Henning Arup (1928- ), Director of the Danish Corrosion Center, Copenhagen, Denmark.


Vivianite Group.
The nickel analogue of Vivianite.

Classification of Arupite

IMA status:Approved
Strunz 8th edition ID:7/C.13-45
Nickel-Strunz 10th (pending) edition ID:8.CE.40

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
Dana 8th edition ID:40.3.6.8

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Hey's CIM Ref.:19.15.1

19 : Phosphates
15 : Phosphates of Ni
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Type Occurrence of Arupite

Type Locality:Santa Catarina meteorite (Santa Catharina), Morro do Rócio, São Francisco do Sul, Santa Catarina, Brazil
General Appearance of Type Material:Short prismatic blue crystals to 5 microns.
Year of Discovery:1990
Geological Setting of type material:Weathered meteorite
Associated Minerals at type locality:
ReevesiteHonessiteAkaganeiteHematiteGoethite
Magnetite

Physical Properties of Arupite

Lustre:Dull, Earthy
Diaphaneity (Transparency):Translucent
Colour:Blue to light blue
Streak:Light blue
Hardness (Mohs):1½ - 2
Density (calculated):2.85 g/cm3

Crystallography of Arupite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Cell Parameters:a = 9.889Å, b = 13.225Å, c = 4.645Å
β = 102.41°
Ratio:a:b:c = 0.748 : 1 : 0.351
Unit Cell Volume:V 593.29 ų (Calculated from Unit Cell)
Z:2
Comment:I2/m
X-Ray Powder Diffraction:
d-spacingIntensity
7.878 (26)
6.624 (100)
4.818 (24)
3.805 (21)
3.152 (24)
2.922 (23)
2.672 (17)

Optical Data of Arupite

Type:Biaxial (+)
RI values: nα = 1.632 nβ = 1.650 nγ = 1.680
2V:Measured: 60° to 70°, Calculated: 78°
Birefringence:0.048
Maximum Birefringence:δ = 0.048

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v strong
Pleochroism:Visible
Comments:X = blue, Z = colorless

Chemical Properties of Arupite

Formula:
Ni
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
Essential elements:H, Ni, O, P
All elements listed in formula:H, Ni, O, P
Common Impurities:Fe

Relationship of Arupite to other Species

Member of:Vivianite Group
Other Members of Group:

- +
Annabergite
Ni
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Barićite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
Erythrite
Co
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Köttigite
Zn
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
Vivianite
Fe
2+
3
(PO
 
4
)
 
2
 · 8H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
8.CE.05Chudobaite
(Mg,Zn)
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 10H
 
2
O
8.CE.05Geigerite
Mn
2+
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 10H
 
2
O
8.CE.10Newberyite
Mg(HPO
 
4
) · 3H
 
2
O
8.CE.15Brassite
Mg(HAsO
 
4
) · 4H
 
2
O
8.CE.20Phosphorrösslerite
Mg(HPO
 
4
) · 7H
 
2
O
8.CE.20Rösslerite
Mg(HAsO
 
4
) · 7H
 
2
O
8.CE.25Metaswitzerite
Mn
 
3
(PO
 
4
)
 
2
 · 4H
 
2
O
8.CE.25Switzerite
(Mn,Fe)
 
3
(PO
 
4
)
 
2
 · 7H
 
2
O
8.CE.30Lindackerite
CuCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 8-9H
 
2
O
8.CE.30Ondrušite
CaCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 10H
 
2
O
8.CE.30Veselovskýite
ZnCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
8.CE.30Pradetite
CoCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
8.CE.30Klajite
MnCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9-10H
 
2
O
8.CE.35Bobierrite
Mg
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Annabergite
Ni
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Barićite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Erythrite
Co
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Ferrisymplesite
Fe
3+
3
(AsO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.CE.40Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Köttigite
Zn
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Vivianite
Fe
2+
3
(PO
 
4
)
 
2
 · 8H
 
2
O
8.CE.40Pakhomovskyite
Co
 
3
(PO
 
4
)
 
2
 · 8H
 
2
O
8.CE.45Symplesite
Fe
2+
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
8.CE.50Cattiite
Mg
 
3
(PO
 
4
)
 
2
 · 22H
 
2
O
8.CE.55Koninckite
Fe
3+
 
PO
 
4
 · 3H
 
2
O
8.CE.60Kaňkite
FeAsO
 
4
 · 3.5H
 
2
O
8.CE.65Steigerite
Al(VO
 
4
) · 3H
 
2
O
8.CE.70Metaschoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 6H
 
2
O
8.CE.70Schoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 8H
 
2
O
8.CE.75Malhmoodite
FeZr(PO
 
4
)
 
2
 · 4H
 
2
O
8.CE.75Zigrasite
MgZr(PO
 
4
)
 
2
 · 4H
 
2
O
8.CE.75Unnamed (Ca-analogue of Zigrasite)
CaZr[PO
 
4
]
 
2
 · 4H
 
2
O
8.CE.80Santabarbaraite
Fe
3+
3
(PO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.CE.85Metaköttigite
(Zn,Fe,Fe)
 
3
(AsO
 
4
)
 
2
 · 8(H
 
2
O,OH)
8.CE.85Metavivianite
Fe
2+
3-x
Fe
3+
x
(PO
 
4
)
 
2
(OH)x · (8-x)H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.15.2Cassidyite
Ca
 
2
(Ni
2+
 
,Mg)(PO
 
4
)
 
2
 · 2H
 
2
O

Other Names for Arupite

Synonyms:
IMA1988-008
Other Languages:
German:Arupit
Russian:Арупит
Spanish:Arupita

Other Information

Fluorescence in UV light:Not fluorescent.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Arupite

Reference List:

- +
New Mins. (1997), New Minerals 1990-1994.

Neues Jahrbuch für Mineralogie, Monatshefte (1990): 76-80.

Internet Links for Arupite

Search Engines:
  • Look for Arupite on Google
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    • External Links:
  • Look for Arupite on Webmineral
  • Look for Arupite on Athena Mineralogy[Link Broken?]
  • Look for Arupite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Fine Minerals from Weinrich Minerals, Inc.
  • Fabre Minerals - search for Arupite specimens
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  • Rare and Unusual minerals at Mineralogical Research Company
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    • Localities for Arupite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Brazil
     
    • Santa Catarina
      • São Francisco do Sul
        • Morro do Rócio
    		[Mandarino, 1997]
    Japan
     
    • Honshu Island
      • Kinki region
        • Mie Prefecture
          • Toba City
    		The Mineral Species of Japan (5th ed) Matsubara
    Mineral and/or Locality
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