Wortupaite
A valid IMA mineral species
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Formula:
MgNi2+2(Te4+O3)3 · 3H2O
Colour:
pale yellowish green
Lustre:
Vitreous, Earthy
Hardness:
3
Specific Gravity:
4.42 (Calculated)
Crystal System:
Hexagonal
Name:
Wortupaite is named for the type locality. The name ‘Wortupa’ means ‘shadow’ in the language of the local indigenous people, the Adnyamathanha.
Structurally related to zemannite (more specifically: to keystoneite, that is also similar in terms of chemistry, and that belongs to the zemannite group).
Unique Identifiers
Mindat ID:
470616
Long-form identifier:
mindat:1:1:470616:4
GUID
(UUID V4):
(UUID V4):
5e5a440b-8677-47f0-8e61-a7912b2f6235
IMA Classification of Wortupaite
Approved, Pending publication
Approval history:
IMA no. 2022-107
Classification of Wortupaite
4.JM.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
M : Tellurites without additional anions, with H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
M : Tellurites without additional anions, with H2O
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 |
---|---|---|
Wor | 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 Wortupaite
Vitreous, Earthy
Comment:
masses have a more earthy lustre
Colour:
pale yellowish green
Streak:
pale-green
Hardness:
3 on Mohs scale
Comment:
analogous to zemannite
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Irregular/Uneven
Density:
4.42 g/cm3 (Calculated)
Optical Data of Wortupaite
Type:
Uniaxial (-)
RI values:
nω = 1.882(10) nε = 1.957(10)
Max Birefringence:
δ = 0.075
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:
Very High
Pleochroism:
Weak
Comments:
O = green-blue,
E = yellow with green tinge
E = yellow with green tinge
Comments:
RI calc
Chemistry of Wortupaite
Mindat Formula:
MgNi2+2(Te4+O3)3 · 3H2O
Crystallography of Wortupaite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 9.221(1) Å, c = 7.515(1) Å
Ratio:
a:c = 1 : 0.815
Unit Cell V:
553.37 ų (Calculated from Unit Cell)
Z:
2
Twinning:
none
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
8.059 Å | (93) |
4.034 Å | (92) |
2.832 Å | (43) |
2.769 Å | (100) |
2.332 Å | (30) |
1.920 Å | (45) |
1.782 Å | (22) |
1.718 Å | (39) |
Type Occurrence of Wortupaite
General Appearance of Type Material:
needles up to 25 μm in length, generally clustered and sometimes in blocky masses of shorter (10‒15 μm) crystals.
Place of Conservation of Type Material:
collections of the Museums Victoria, P.O. Box 666, Melbourne, Victoria 3001, Australia, specimen number M2021
Geological Setting of Type Material:
oxidation zone of nickel telluride
Associated Minerals at Type Locality:
Related Minerals - Strunz-mindat Grouping
4.JM. | Rudolfhermannite | Fe(Te4+O3)3 · H2O |
4.JM.05 | Keystoneite | Mg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O |
4.JM.05 | Kinichilite | Mg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2O |
4.JM.05 | Zemannite | Mg0.5ZnFe3+(Te4+O3)3 · 4.5H2O |
4.JM.05 | Ilirneyite | Mg0.5ZnMn3+(Te4+O3)3 · 4.5H2O |
4.JM.10 | Blakeite | Fe3+2[TeO3]3 (?) |
4.JM.10 | Emmonsite | Fe3+2(TeO3)3 · 2H2O |
4.JM.15 | Graemite | Cu[TeO3] · H2O |
4.JM.20 | Teineite | Cu2+(Te4+O3) · 2H2O |
4.JM.20 | Telluromandarinoite | Fe3+2Te3O9 · 6H2O |
4.JM.25 | Millsite | Cu2+(Te4+O3) · 2H2O |
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 Wortupaite
mindat.org URL:
https://www.mindat.org/min-470616.html
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References for Wortupaite
Localities for Wortupaite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia (TL) | |
| Bosi et al. (2023) +1 other reference |