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Nickeltalmessite

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Formula:
Ca2Ni(AsO4)2 · 2H2O
Colour:
apple-green
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
3.73
Crystal System:
Triclinic
Name:
For the mineral talmessite and it's nickel content
Hide all sections | Show all sections

Classification of NickeltalmessiteHide

Approved
Approval Year:
2008
8.CG.35

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
40.2.3.5

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O

Physical Properties of NickeltalmessiteHide

Vitreous
Colour:
apple-green
Streak:
white
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
{010}
Density:
3.73(3) g/cm3 (Measured)    3.740 g/cm3 (Calculated)

Optical Data of NickeltalmessiteHide

Type:
Biaxial (+)
RI values:
nα = 1.715(3) nβ = 1.720(5) nγ = 1.753(7)
2V:
Measured: 80° (10), Calculated: 60.4°
Max Birefringence:
δ = 0.038
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Non-pleochroic

Chemical Properties of NickeltalmessiteHide

Formula:
Ca2Ni(AsO4)2 · 2H2O

Crystallography of NickeltalmessiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.858(7) Å, b = 7.082(12) Å, c = 5.567(6) Å
α = 97.20(4)°, β = 109.11(5)°, γ = 109.78(5)°
Ratio:
a:b:c = 0.827 : 1 : 0.786
Unit Cell V:
197.98 ų (Calculated from Unit Cell)
Z:
1
Comment:
may be P1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.05 (27)
3.57 (43)
3.358 (58)
3.202 (100)
3.099 (64)
2.813 (60)
2.772 (68)
1.714 (39)

Type Occurrence of NickeltalmessiteHide

General Appearance of Type Material:
botryoidal aggregates consisting of split individuals up to 10 10 20 mkm in size.
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 3750/1.
Geological Setting of Type Material:
oxidation zone of hydrothermal cobaltite-arsenopyrite-glaucodite ores.
Associated Minerals at Type Locality:

Synonyms of NickeltalmessiteHide

Other Language Names for NickeltalmessiteHide

Relationship of Nickeltalmessite to other SpeciesHide

Other Members of this group:
CassidyiteCa2(Ni2+,Mg)(PO4)2 · 2H2OTric.
CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
GaititeCa2Zn(AsO4)2 · 2H2OTric.
MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2OTric. 1 : P1
NeomesseliteA structural variety of messelite.Tric.
ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric.
TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
Unnamed (Fe2+-analogue of Parabrandtite)Ca2Fe2+(AsO4)2 · 2H2O
β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OTric.

Related Minerals - Nickel-Strunz GroupingHide

8.CG.05CassidyiteCa2(Ni2+,Mg)(PO4)2 · 2H2OTric.
8.CG.05CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric.
8.CG.05MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric.
8.CG.05β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
8.CG.05HilliteCa2(Zn,Mg)(PO4)2 · 2 H2OTric. 1 : P1
8.CG.10BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.15FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.15LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon.
8.CG.15CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.20GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
8.CG.20ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
8.CG.20PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4·H2O (0.8 < x < 1.0)Tet. 4/m : I41/a

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

40.2.3.1RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
40.2.3.2BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
40.2.3.3ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
40.2.3.4WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b

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 NickeltalmessiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
N. V. Chukanov, A. A. Mukhanova, Sh. Mockel, D. I. Belakovskiy, L. A. Levitskaya (2009): Nickeltalmessite, Ca2Ni(AsO4)2 · 2H2O — a new fairfieldite-group mineral from Bou-Azzer. Morocco. ZRMO 138(4), 32-39.
N. V. Chukanov, A. A. Mukhanova, S. Möckel, D. I. Belakovsky und L. A. Levitskaya (2010): Nickeltalmessite, Ca2Ni(AsO4)2 • 2H2O, a new mineral species of the fairfieldite group, Bou Azzer, Morocco. Geology of Ore Deposits 52, 606-611.

Internet Links for NickeltalmessiteHide

Localities for NickeltalmessiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Chile
 
  • Atacama Region
    • Huasco Province
Tony Nikischer specimen
Morocco (TL)
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
          • Aït Ahmane
ZRMO 138(4),32-39 (2009); N. V. Chukanov, A. A. Mukhanova, S. Möckel, D. I. Belakovsky und L. A. Levitskaya (2010): Nickeltalmessite, Ca2Ni(AsO4)2 • 2H2O, a new mineral species of the fairfieldite group, Bou Azzer, Morocco. Geology of Ore Deposits 52, 606-611.
Mineral and/or Locality  
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