Paratacamite-(Ni)
A valid IMA mineral species
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About Paratacamite-(Ni)
Formula:
Cu3(Ni,Cu)(OH)6Cl2
Colour:
Dark green
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.70
Crystal System:
Trigonal
Member of:
Name:
Nickel rich analog of paratacamite.
Type Locality:
Dimorph of:
Substituted derivative of paratacamite. The Ni analogue of paratacamite and paratacamite-(Mg). One of two Cu-Ni chloride minerals known. Product of oxidation of pentlandite in saline environment.
Compare droninoite, muonionalustaite; akaganeite and nickelbischofite.
The crystal structure is based on sheets of edge-sharing CuCl2(OH)4 octahedra typically showing Jahn-Teller distortion. Two octahedral sites, M1 and M2, are located between the adjacent sheets and occupied by Cu and Ni. The occupancy of Ni in the M2 site is 71%. respectively. Paratacamite-(Ni) is very close to the upper limit of Ni2+ occupation in the R3 structure.
Compare droninoite, muonionalustaite; akaganeite and nickelbischofite.
The crystal structure is based on sheets of edge-sharing CuCl2(OH)4 octahedra typically showing Jahn-Teller distortion. Two octahedral sites, M1 and M2, are located between the adjacent sheets and occupied by Cu and Ni. The occupancy of Ni in the M2 site is 71%. respectively. Paratacamite-(Ni) is very close to the upper limit of Ni2+ occupation in the R3 structure.
Unique Identifiers
Mindat ID:
43882
Long-form identifier:
mindat:1:1:43882:9
Similar Names
| Paratacamite | A valid IMA mineral species - grandfathered | Cu3(Cu,Zn)(OH)6Cl2 |
| Paratacamite-(Mg) | A valid IMA mineral species | Cu3(Mg,Cu)(OH)6Cl2 |
IMA Classification of Paratacamite-(Ni)
Classification of Paratacamite-(Ni)
3.DA.10c
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Pata-Ni | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Paratacamite-(Ni)
Vitreous
Transparency:
Transparent
Colour:
Dark green
Streak:
Light green
Hardness:
3 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Distinct/Good
{1011}
{1011}
Parting:
None
Fracture:
Irregular/Uneven
Density:
3.70 g/cm3 (Measured) 3.735 g/cm3 (Calculated)
Optical Data of Paratacamite-(Ni)
Type:
Uniaxial (-)
RI values:
nω = >1.8 nε = >1.8
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Comments:
Refractive indices greater than 1.80, but mineral reacts with RI fluids. Average is 1.81 from Gladstone Dale calculation.
Chemistry of Paratacamite-(Ni)
Mindat Formula:
Cu3(Ni,Cu)(OH)6Cl2
Element Weights:
Common Impurities:
(Co)
Crystallography of Paratacamite-(Ni)
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 13.682(2) Å, c = 13.916(2) Å
Ratio:
a:c = 1 : 1.017
Unit Cell V:
2,256.03 ų (Calculated from Unit Cell)
Comment:
Space group by analogy to paratacamite.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.445 Å | (81) |
| 4.637 Å | (13) |
| 4.505 Å | (8) |
| 2.894 Å | (21) |
| 2.751 Å | (100) |
| 2.254 Å | (65) |
| 1.815 Å | (14) |
| 1.708 Å | (9) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
Type Occurrence of Paratacamite-(Ni)
General Appearance of Type Material:
aggregates up to 2 mm in size of equant, rhombohedral crystals showing the forms {101}, {021} and {001}.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Western Australian Museum, Welshpool, Western Australia, Australia, specimen number WAM M365.2003
Geological Setting of Type Material:
Oxidation zone of a nickel sulfide deposit
Associated Minerals at Type Locality:
Synonyms of Paratacamite-(Ni)
Other Language Names for Paratacamite-(Ni)
Dutch:Paratacamiet-(Ni)
German:Paratacamit-(Ni)
Relationship of Paratacamite-(Ni) to other Species
Member of:
Other Members of Atacamite Group:
| Atacamite | Cu2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Botallackite | Cu2(OH)3Cl | Mon. 2/m : P21/m |
| Clinoatacamite | Cu2(OH)3Cl | Mon. 2/m |
| Gillardite | Cu3Ni(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| Haydeeite | Cu3Mg(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Herbertsmithite | Cu3Zn(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| Hibbingite | Fe2+2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Iyoite | MnCuCl(OH)3 | Mon. 2/m : P21/m |
| Kapellasite | Cu3Zn(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Kempite | Mn2+2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Kuliginite | Fe3Mg(OH)6Cl2 | Trig. 3 : R3 |
| Leverettite | Cu3Co(OH)6Cl2 | Trig. 3 : R3 |
| Misakiite | Cu3Mn(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 | Trig. 3 : R3 |
| Paratacamite-(Mg) | Cu3(Mg,Cu)(OH)6Cl2 | Trig. 3 : R3 |
| Tondiite | Cu3Mg(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 | Mon. 2/m : P21/m |
Common Associates
Related Minerals - Strunz-mindat Grouping
| 3.DA. | Parahibbingite | Fe2(OH)3Cl |
| 3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) |
| 3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 |
| 3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O |
| 3.DA.05 | Melanothallite | Cu2Cl2O |
| 3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 |
| 3.DA.10b | Clinoatacamite | Cu2(OH)3Cl |
| 3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 |
| 3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 |
| 3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 |
| 3.DA.10a | Hibbingite | Fe2+2(OH)3Cl |
| 3.DA.10a | Kempite | Mn2+2(OH)3Cl |
| 3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 |
| 3.DA.10a | Atacamite | Cu2(OH)3Cl |
| 3.DA.10b | Belloite | Cu(OH)Cl |
| 3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 |
| 3.DA.10b | Iyoite | MnCuCl(OH)3 |
| 3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 |
| 3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 |
| 3.DA.10b | 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 |
| 3.DA.10b | Botallackite | Cu2(OH)3Cl |
| 3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 |
| 3.DA.15 | Claringbullite | Cu4ClF(OH)6 |
| 3.DA.15 | Barlowite | Cu4BrF(OH)6 |
| 3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O |
| 3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O |
| 3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
| 3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 |
| 3.DA.35 | Ponomarevite | K4Cu4Cl10O |
| 3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O |
| 3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O |
| 3.DA.45 | Khaidarkanite | Cu4Al3(OH)14F3 · 2H2O |
| 3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O |
| 3.DA.55 | Avdoninite | K2Cu5(OH)4Cl8 · H2O |
| 3.DA.60 | Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O |
| 3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
| 3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O |
| 3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O |
| 3.DA.80 | Romanorlovite | K8Cu6Cl17(OH)3 |
Fluorescence of Paratacamite-(Ni)
none
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Paratacamite-(Ni)
mindat.org URL:
https://www.mindat.org/min-43882.html
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References for Paratacamite-(Ni)
Localities for Paratacamite-(Ni)
Showing 1 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia (TL) | |
| Sciberras et al. (2013) |
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Carr Boyd Rocks Ni mine, Menangina Station, Menzies Shire, Western Australia, Australia