Widgiemoolthalite
A valid IMA mineral species
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About Widgiemoolthalite
132N Deposit, nov. 2005
132 North Ni Mine, Widgiemooltha, Coolgardie Shire, Western Australia, Australia
132 North Ni Mine, Widgiemooltha, Coolgardie Shire, Western Australia, Australia
Formula:
Ni5(CO3)4(OH)2 · 5H2O
Colour:
Green, bluish-green
Lustre:
Silky
Hardness:
3½
Specific Gravity:
3.13
Crystal System:
Monoclinic
Name:
Named by E.H. Nickel, B.W. Robinson and W.G. Mumme in 1993 after its discovery locality, the 132 North Mine, near Widgiemooltha, Western Australia, Australia.
This page provides mineralogical data about Widgiemoolthalite.
Unique Identifiers
Mindat ID:
4286
Long-form identifier:
mindat:1:1:4286:0
GUID
(UUID V4):
(UUID V4):
953e2875-1284-402c-871d-2d3e2ca39e6e
IMA Classification of Widgiemoolthalite
Approved
IMA Formula:
Ni5(CO3)4(OH)2 · 4-5H2O
Approval year:
1992
Classification of Widgiemoolthalite
5.DA.05
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.7.1.2
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
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 |
|---|---|---|
| Wmo | 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 Widgiemoolthalite
Silky
Transparency:
Transparent
Colour:
Green, bluish-green
Streak:
Light green-blue
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Density:
3.13(1) g/cm3 (Measured) 3.24 g/cm3 (Calculated)
Optical Data of Widgiemoolthalite
Type:
Biaxial (+)
RI values:
nα = 1.630(5) nγ = 1.640(5)
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively strong
Chemistry of Widgiemoolthalite
Mindat Formula:
Ni5(CO3)4(OH)2 · 5H2O
Elements listed:
Crystallography of Widgiemoolthalite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 10.06(17) Å, b = 8.75(5) Å, c = 8.32(4) Å
β = 114.4(8)°
β = 114.4(8)°
Ratio:
a:b:c = 1.15 : 1 : 0.951
Unit Cell V:
666.96 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.75 Å | (10) |
| 6.30 Å | (5) |
| 4.36 Å | (4) |
| 2.871 Å | (4) |
| 4.14 Å | (3) |
| 2.120 Å | (3) |
| 2.458 Å | (2) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Widgiemoolthalite
Place of Conservation of Type Material:
Western Australian Museum, Perth, Australia, M.1.1993.
Associated Minerals at Type Locality:
Reference:
Nickel, E.H., Robinson, B.W., Mumme, W.G. (1993) Widgiemoolthalite: the new Ni analogue of hydromagnesite from Western Australia. American Mineralogist: 78: 819-821.
Synonyms of Widgiemoolthalite
Other Language Names for Widgiemoolthalite
Common Associates
Associated Minerals Based on Photo Data:
| 7 photos of Widgiemoolthalite associated with Gaspéite | NiCO3 |
| 5 photos of Widgiemoolthalite associated with Kambaldaite | NaNi4(CO3)3(OH)3 · 3H2O |
| 1 photo of Widgiemoolthalite associated with Otwayite | Ni2(CO3)(OH)2 · H2O |
| 1 photo of Widgiemoolthalite associated with Gillardite | Cu3Ni(OH)6Cl2 |
| 1 photo of Widgiemoolthalite associated with Magnesite | MgCO3 |
| 1 photo of Widgiemoolthalite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 5.DA. | Alexkhomyakovite | K6(Ca2Na)(CO3)5Cl · 6H2O |
| 5.DA. | Amoraite | Ca12Al6(OH)36(CO3)2(SO3) · 15H2O |
| 5.DA.05 | Dypingite | Mg5(CO3)4(OH)2 · 5H2O |
| 5.DA.05 | Giorgiosite | Mg5(CO3)4(OH)2 · 5-6H2O |
| 5.DA.05 | Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| 5.DA.05 | UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995) | Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O |
| 5.DA.05 | UM1987-01-CO:HMgS | Mg4(CO3)2(OH)4 · 6H2O ? |
| 5.DA.10 | Artinite | Mg2(CO3)(OH)2 · 3H2O |
| 5.DA.10 | Indigirite | Mg2Al2(CO3)4(OH)2 · 15H2O |
| 5.DA.10 | Chlorartinite | Mg2(CO3)(OH)Cl · 2H2O |
| 5.DA.15 | Otwayite | Ni2(CO3)(OH)2 · H2O |
| 5.DA.15 | Zaratite | Ni3(CO3)(OH)4 · 4H2O ? |
| 5.DA.20 | Kambaldaite | NaNi4(CO3)3(OH)3 · 3H2O |
| 5.DA.25 | Callaghanite | Cu2Mg2(CO3)(OH)6 · 2H2O |
| 5.DA.30 | Claraite | (Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2O |
| 5.DA.35 | Hydroscarbroite | Al14(CO3)3(OH)36 · nH2O |
| 5.DA.35 | Scarbroite | Al5(CO3)(OH)13 · 5H2O |
| 5.DA.40 | Caresite | Fe2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.40 | Quintinite | Mg4Al2(OH)12(CO3) · 3H2O |
| 5.DA.40 | Charmarite | Mn2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.40 | Karchevskyite | Mg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5 |
| 5.DA.40 | UM1987-05-OH:AlCMg | Mg4Al2(OH)12(CO3,SO4) · 3H2O |
| 5.DA.45 | Stichtite-2H | Mg6(Cr,Al)2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | Brugnatellite | Mg6Fe3+(CO3)(OH)13 · 4H2O |
| 5.DA.45 | Chlormagaluminite | Mg4Al2(OH)12Cl2 · 3H2O |
| 5.DA.45 | Hydrotalcite-2H | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | Pyroaurite-2H | Mg6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.45 | Zaccagnaite | Zn4Al2(OH)12[CO3] · 3H2O |
| 5.DA.45 | Liudongshengite | Zn4Cr2(OH)12(CO3) · 3H2O |
| 5.DA.50 | Comblainite | Ni4Co2(OH)12[CO3] · 3H2O |
| 5.DA.50 | Desautelsite | Mg6Mn3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Hydrotalcite | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.50 | Pyroaurite | Mg6Fe3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Reevesite | Ni6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.50 | Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Takovite | Ni6Al2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Kaznakhtite | Ni6Co3+2(CO3)(OH)16 · 4H2O |
| 5.DA.55 | Coalingite | Mg10Fe3+2(OH)24[CO3] · 2H2O |
| 5.DA.55 | Akopovaite | Al4Li2(OH)12(CO3)(H2O)3 |
| 5.DA.60 | Šlikite | Zn2Mg(CO3)2(OH)2 · 4H2O |
| 5.DA.65 | Marklite | Cu5(CO3)2(OH)6 · 6H2O |
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 Widgiemoolthalite
mindat.org URL:
https://www.mindat.org/min-4286.html
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References for Widgiemoolthalite
Localities for Widgiemoolthalite
symbol to view information about a locality.
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) | |
| Am.Min.: 78 (1993) +2 other references |
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132 North Ni Mine, Widgiemooltha, Coolgardie Shire, Western Australia, Australia