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Arupite

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Formula:
Ni3(PO4)2 · 8H2O
Colour:
Blue to light blue
Lustre:
Dull, Earthy
Hardness:
1½ - 2
Specific Gravity:
2.85 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named in 1990 by Vagn Fabius Buchwald in honor of Hans Henning Arup (4 May 1928 - 19 November 2012), Director of the Danish Corrosion Center, Copenhagen, Denmark.
The nickel analogue of Vivianite.


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Classification of ArupiteHide

Approved
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
40.3.6.8

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
19.15.1

19 : Phosphates
15 : Phosphates of Ni

Physical Properties of ArupiteHide

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

Optical Data of ArupiteHide

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

Formula:
Ni3(PO4)2 · 8H2O
Common Impurities:
Fe

Crystallography of ArupiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 9.889 Å, b = 13.225 Å, c = 4.645 Å
β = 102.41°
Ratio:
a:b:c = 0.748 : 1 : 0.351
Unit Cell V:
593.29 ų (Calculated from Unit Cell)
Z:
2
Comment:
I2/m

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.878 (26)
6.624 (100)
4.818 (24)
3.805 (21)
3.152 (24)
2.922 (23)
2.672 (17)

Type Occurrence of ArupiteHide

General Appearance of Type Material:
Short prismatic blue crystals to 5 microns.
Geological Setting of Type Material:
Weathered meteorite
Associated Minerals at Type Locality:

Synonyms of ArupiteHide

Other Language Names for ArupiteHide

German:Arupit
Russian:Арупит
Spanish:Arupita

Relationship of Arupite to other SpeciesHide

Member of:
Other Members of this group:
AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
BabánekiteCu3(AsO4)2 · 8H2O Mon. 2/m : B2/m
Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
Manganohörnesite(Mn,Mg)3(AsO4)2 · 8H2OMon. 2/m : P2/m
PakhomovskyiteCo3(PO4)2 · 8H2OMon. 2/m : B2/m
ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m

Related Minerals - Nickel-Strunz GroupingHide

8.CE.XBabánekiteCu3(AsO4)2 · 8H2O Mon. 2/m : B2/m
8.CE.05Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.05GeigeriteMn2+5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.10NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.15BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.20PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
8.CE.20RößleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
8.CE.25MetaswitzeriteMn2+3(PO4)2 · 4H2OMon. 2/m : P2/b
8.CE.25Switzerite(Mn,Fe)3(PO4)2 · 7H2OMon.
8.CE.30LindackeriteCuCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30OndrušiteCaCu4(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.30VeselovskýiteZnCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30PradetiteCoCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30KlajiteMnCu4(AsO4)2(HAsO4)2 · 9-10H2OTric. 1 : P1
8.CE.35BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
8.CE.40AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40FerrisymplesiteFe3+3(AsO4)2(OH)3 · 5H2O
8.CE.40HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Manganohörnesite(Mn,Mg)3(AsO4)2 · 8H2OMon. 2/m : P2/m
8.CE.40ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40PakhomovskyiteCo3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.45SymplesiteFe2+3(AsO4)2 · 8H2OTric. 1 : P1
8.CE.50CattiiteMg3(PO4)2 · 22H2OTric. 1 : P1
8.CE.55KoninckiteFe3+PO4 · 3H2OTet.
8.CE.60KaňkiteFeAsO4 · 3.5H2OMon.
8.CE.65SteigeriteAl(VO4) · 3H2OMon. 2/m : P21/m
8.CE.70MetaschoderiteAl2(PO4)(VO4) · 6H2OMon. 2/m : P2/m
8.CE.70SchoderiteAl2(PO4)(VO4) · 8H2OMon.
8.CE.75MalhmooditeFeZr(PO4)2 · 4H2OMon.
8.CE.75ZigrasiteMgZr(PO4)2 · 4H2OTric. 1 : P1
8.CE.75Unnamed (Ca-analogue of Zigrasite)CaZr[PO4]2 · 4H2OTric.
8.CE.80SantabarbaraiteFe3+3(PO4)2(OH)3 · 5H2OAmor.
8.CE.85Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

40.3.6.1VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.2Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.3ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.4AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.5KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.6ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
40.3.6.7HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.15.2CassidyiteCa2Ni(PO4)2 · 2H2OTric.

Fluorescence of ArupiteHide

Not fluorescent.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ArupiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
New Mins. (1997), New Minerals 1990-1994.
Neues Jahrbuch für Mineralogie, Monatshefte (1990): 76-80.

Internet Links for ArupiteHide

Localities for ArupiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil (TL)
 
  • 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; Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
Mineral and/or Locality  
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