Okieite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Okieite
Formula:
Mg3[V10O28] · 28H2O
Colour:
Bright red to red orange to yellow orange
Lustre:
Vitreous
Hardness:
1½
Specific Gravity:
2.20
Crystal System:
Triclinic
Member of:
Name:
The name okieite is for Craig (“Okie”) Howell of Naturita, Colorado.
An uncommon decavanadate species found as a post-mining mineral in sandstone-hosted uranium-vanadium deposits. Unstable outside of a humid environment and slowly dehydrates.
Unique Identifiers
Mindat ID:
53199
Long-form identifier:
mindat:1:1:53199:5
Similar Names
| Oakite | A synonym of Lithiophorite |
| Okaite | A rock classification type |
Classification of Okieite
The Decavanadate Cluster
The decavanadate cluster found in okieite. The same cluster is known in a number of other secondary vanadium minerals including, for example, pascoite, hughesite, and wernerbaurite.
IMA Classification of Okieite
Approved
IMA Formula:
[Mg3(H2O)18][V5+10O28]·10H2O
Approval year:
2018
First published:
2020
Type description reference:
4.HC.50
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
C : [6]-Sorovanadates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
C : [6]-Sorovanadates
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 |
|---|---|---|
| Oki | 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 Okieite
Vitreous
Transparency:
Transparent
Colour:
Bright red to red orange to yellow orange
Streak:
Light orange yellow
Hardness:
1½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
2.20(2) g/cm3 (Measured) 2.186 g/cm3 (Calculated)
Optical Data of Okieite
Type:
Biaxial (-)
RI values:
nα = 1.720(3) nβ = 1.745(3) nγ = 1.765(3)
2V:
Measured: 84° (2), Calculated: 82.5°
Max. Birefringence:
δ = 0.045
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
Strong, r < v
Pleochroism:
Not Visible
Comments:
X Λ a = 37°, Y Λ c = 28°, Z Λ b = 31°
Chemistry of Okieite
Mindat Formula:
Mg3[V10O28] · 28H2O
Element Weights:
Elements listed:
Crystallography of Okieite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 10.5566(2) Å, b = 10.7566(2) Å, c = 21.355(1) Å
α = 90.015(6)°, β = 97.795(7)°, γ = 104.337(7)°
α = 90.015(6)°, β = 97.795(7)°, γ = 104.337(7)°
Ratio:
a:b:c = 0.981 : 1 : 1.985
Unit Cell V:
2,326.25 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.04 Å | (17) |
| 9.71 Å | (100) |
| 8.32 Å | (19) |
| 6.42 Å | (12) |
| 3.150 Å | (9) |
| 3.024 Å | (7) |
| 2.621 Å | (10) |
| 2.087 Å | (7) |
Reference:
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Okieite
Co-Type Localities:
General Appearance of Type Material:
Equant to prismatic, commonly appearing like curving columns (up to about 3 mm in length) and often exhibiting rounded faces.
Place of Conservation of Type Material:
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 66784 and 66785 (Burro mine) and 66786 (Hummer mine)
Associated Minerals at Type Locality:
Reference:
Synonyms of Okieite
Other Language Names for Okieite
Relationship of Okieite to other Species
Member of:
Other Members of Pascoite Family:
| Ammoniolasalite | [(NH4)2Mg2(H2O)20] [V10O28] | Mon. 2/m : B2/b |
| Bluestreakite | K4Mg2(V4+2V5+8O28) · 14H2O | Mon. 2/m |
| Burroite | Ca2(NH4)2(V10O28) · 15H2O | Tric. 1 : P1 |
| Caseyite | [(V5+O2)Al10-x(OH)20-2x(H2O)18-2x]2[H2V4+V5+9O28][V5+10O28]2(Na,K,Ca)2-y(SO4)2-z · (60+8x+y+4z)H2O (x = 0-2.5; y = 0-2; z = 0-2) | Mon. |
| Flatimerite | [Al13(OH)24(H2O)24][V5+9V4+O28] · [(SO4)4(H2O)24] | Tric. 1 : P1 |
| Gunterite | Na4Ca(V10O28) · 20H2O | Mon. 2/m : B2/m |
| Huemulite | Na4Mg(V10O28) · 24H2O | Tric. |
| Hughesite | Na3Al(V10O28) · 22H2O | Tric. 1 : P1 |
| Hummerite | K2Mg2(V10O28) · 16H2O | Tric. 1 : P1 |
| Hydropascoite | Ca3(V10O28) · 24H2O | Tric. 1 : P1 |
| Kokinosite | Na2Ca2(V10O28) · 24H2O | Tric. 1 : P1 |
| Lasalite | Na2Mg2(V10O28) · 20H2O | Mon. 2/m : B2/b |
| Magnesiopascoite | Ca2Mg(V10O28) · 16H2O | Mon. 2/m : B2/m |
| Nashite | Na3Ca2[(V5+9V4+)O28] · 24H2O | Mon. 2/m : P21/m |
| Pascoite | Ca2Ca(V10O28) · 17H2O | Mon. 2 : B2 |
| Postite | Mg(H2O)6Al2(OH)2(H2O)8(V10O28) · 13H2O | Orth. mmm(2/m2/m2/m) : Pccn |
| Protocaseyite | [Al4(OH)6(H2O)12][V10O28] · 8H2O | Tric. 1 : P1 |
| Rakovanite | (NH4)3Na3(V10O28) · 12H2O | Mon. 2/m |
| Schindlerite | {(NH4)4Na2(H2O)10}{V10O28} | Tric. 1 : P1 |
| Trebiskyite | Na3Mg2[TiV9O28] · 22H2O | Mon. 2/m : P21/b |
| Wernerbaurite | {(NH4)2[Ca2(H2O)14](H2O)2}{V10O28} | Tric. 1 : P1 |
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 4.HC. | Protocaseyite | [Al4(OH)6(H2O)12][V10O28] · 8H2O |
| 4.HC. | Ammoniolasalite | [(NH4)2Mg2(H2O)20] [V10O28] |
| 4.HC. | Beckettite | Ca2V6Al6O20 |
| 4.HC.05 | Pascoite | Ca2Ca(V10O28) · 17H2O |
| 4.HC.05 | Hydropascoite | Ca3(V10O28) · 24H2O |
| 4.HC.05 | Lasalite | Na2Mg2(V10O28) · 20H2O |
| 4.HC.05 | Hughesite | Na3Al(V10O28) · 22H2O |
| 4.HC.05 | Magnesiopascoite | Ca2Mg(V10O28) · 16H2O |
| 4.HC.05 | Rakovanite | (NH4)3Na3(V10O28) · 12H2O |
| 4.HC.10 | Hummerite | K2Mg2(V10O28) · 16H2O |
| 4.HC.15 | Sherwoodite | Ca5.5(AlV4+V5+12O39) · 28H2O |
| 4.HC.20 | Bluestreakite | K4Mg2(V4+2V5+8O28) · 14H2O |
| 4.HC.25 | Wernerbaurite | {(NH4)2[Ca2(H2O)14](H2O)2}{V10O28} |
| 4.HC.25 | Burroite | Ca2(NH4)2(V10O28) · 15H2O |
| 4.HC.30 | Caseyite | [(V5+O2)Al10-x(OH)20-2x(H2O)18-2x]2[H2V4+V5+9O28][V5+10O28]2(Na,K,Ca)2-y(SO4)2-z · (60+8x+y+4z)H2O (x = 0-2.5; y = 0-2; z = 0-2) |
| 4.HC.35 | Gunterite | Na4Ca(V10O28) · 20H2O |
| 4.HC.40 | Kokinosite | Na2Ca2(V10O28) · 24H2O |
| 4.HC.45 | Nashite | Na3Ca2[(V5+9V4+)O28] · 24H2O |
| 4.HC.55 | Postite | Mg(H2O)6Al2(OH)2(H2O)8(V10O28) · 13H2O |
| 4.HC.60 | Schindlerite | {(NH4)4Na2(H2O)10}{V10O28} |
Fluorescence of Okieite
Not fluorescent
Other Information
Notes:
Rapidly soluble in H2O at room temperature. Dehydrates readily in air at low relative humidity.
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 Okieite
mindat.org URL:
https://www.mindat.org/min-53199.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Okieite
Reference List:
Hålenius, Ulf, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 46. European Journal of Mineralogy, 30 (6) 1181-1189 doi:10.1127/ejm/2018/0030-2819
Localities for Okieite
Showing 4 localities.
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.
USA (TL) | |
| Hålenius et al. (2018) +1 other reference |
| Hålenius et al. (2018) |
| Desor (04/2020) |
| Joe Marty Collection |
Quick NavTopAbout OkieiteUnique IdentifiersSimilar NamesClassification IMA Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Vanadium Queen Mine, La Sal Creek Mining District, San Juan County, Utah, USA