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Nickeltalmessite

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Formula:
Ca
 
2
Ni(AsO
 
4
)
 
2
· 2H
 
2
O
System:Triclinic
Member of:Fairfieldite Group

Classification of Nickeltalmessite

IMA status:Approved 2008
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:40.2.3.5

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

Type Locality:Vein No. 51, Aït Ahmane, Bou Azer District (Bou Azzer District), Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

Crystallography of Nickeltalmessite

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 Volume:V 197.98 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
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)

Chemical Properties of Nickeltalmessite

Formula:
Ca
 
2
Ni(AsO
 
4
)
 
2
· 2H
 
2
O
Simplified for copy/paste:Ca2Ni(AsO4)2·2H2O
Essential elements:As, Ca, H, Ni, O
All elements listed in formula:As, Ca, H, Ni, O

Relationship of Nickeltalmessite to other Species

Member of:Fairfieldite Group
Other Members of Group:

- +
Cassidyite
Ca
 
2
(Ni
2+
 
,Mg)(PO
 
4
)
 
2
· 2H
 
2
O
Collinsite
Ca
 
2
(Mg,Fe
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
Fairfieldite
Ca
 
2
(Mn
2+
 
,Fe
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
Gaitite
Ca
 
2
Zn(AsO
 
4
)
 
2
· 2H
 
2
O
Messelite
Ca
 
2
(Fe
2+
 
,Mn
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
Parabrandtite
Ca
 
2
Mn
2+
 
(AsO
 
4
)
 
2
· 2H
 
2
O
Talmessite
Ca
 
2
Mg(AsO
 
4
)
 
2
· 2H
 
2
O
β-Roselite
Ca
 
2
(Co
2+
 
,Mg)(AsO
 
4
)
 
2
· 2H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
8.CG.05Cassidyite
Ca
 
2
(Ni
2+
 
,Mg)(PO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Collinsite
Ca
 
2
(Mg,Fe
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Fairfieldite
Ca
 
2
(Mn
2+
 
,Fe
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Gaitite
Ca
 
2
Zn(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Messelite
Ca
 
2
(Fe
2+
 
,Mn
2+
 
)(PO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Parabrandtite
Ca
 
2
Mn
2+
 
(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Talmessite
Ca
 
2
Mg(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.05Hillite
Ca
 
2
(Zn,Mg)(PO
 
4
)
 
2
· 2 H
 
2
O
8.CG.10Brandtite
Ca
 
2
(Mn
2+
 
,Mg)(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.10Roselite
Ca
 
2
(Co
2+
 
,Mg)(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.10Wendwilsonite
Ca
 
2
(Mg,Co
2+
 
)(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.10Zincroselite
Ca
 
2
Zn(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.10Rruffite
Ca
 
2
Cu(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.15Ferrilotharmeyerite
Ca(Fe
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Lotharmeyerite
Ca(Zn,Mn
3+
 
)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Mawbyite
Pb(Fe
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Mounanaite
PbFe
3+
2
(VO
 
4
)
 
2
· 2(OH,F)
8.CG.15Thometzekite
Pb(Cu,Zn)
 
2
(AsO
 
4
,SO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Tsumcorite
Pb(Zn,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Cobaltlotharmeyerite
Ca(Co,Fe
3+
 
,Ni)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Cabalzarite
Ca(Mg,Al,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Krettnichite
(Pb,Sr)(Mn
3+
 
,Co)
 
2
(VO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Cobalttsumcorite
Pb(Co,Fe
3+
 
,Ni)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Nickellotharmeyerite
Ca(Ni,Fe
3+
 
,Co)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.15Manganlotharmeyerite
Ca(Mn
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Schneebergite
(Bi
3+
 
,Ca)(Co,Ni,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.15Nickelschneebergite
(Bi
3+
 
,Ca)(Ni,Co,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
· 2(OH,H
 
2
O)
8.CG.20Gartrellite
Pb(Cu,Fe
3+
 
,Zn)
 
2
(AsO
 
4
,SO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.20Helmutwinklerite
Pb(Zn,Cu)
 
2
(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.20Zincgartrellite
Pb(Zn,Fe
3+
 
,Cu)
 
2
(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.20Rappoldite
Pb(Co,Ni,Zn)
 
2
(AsO
 
4
)
 
2
· 2H
 
2
O
8.CG.20Phosphogartrellite
Pb(Cu,Fe
3+
 
)
 
2
(PO
 
4
,AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.20Lukrahnite
Ca(Cu,Zn)(Fe
3+
 
,Zn)(AsO
 
4
)
 
2
· 2(H
 
2
O,OH)
8.CG.25Pottsite
HPbBi(VO
 
4
)
 
2
· 2H
 
2
O

Other Names for Nickeltalmessite

Synonyms:
IMA2008-051
Other Languages:

Other Information

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 Nickeltalmessite

Reference List:

- +
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 Nickeltalmessite

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  • Localities for Nickeltalmessite

    (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.
    Chile
     
    • Atacama Region
      • Huasco Province
    Tony Nikischer specimen
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azer District (Bou Azzer 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.
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