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Nashite
A valid IMA mineral species
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About Nashite
Barbara P. Nash
Formula:
Na3Ca2[(V5+9V4+)O28] · 24H2O
Colour:
Bluish-green
Lustre:
Sub-Adamantine
Hardness:
2
Specific Gravity:
2.350 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named in honour of Dr. Barbara P. Nash (b. 1944), Professor of Geology and Geophysics at the University of Utah. She is an expert on the geochemistry and petrogenesis of volcanic systems and has described a large number of new minerals.
This page provides mineralogical data about Nashite.
Unique Identifiers
Mindat ID:
42727
Long-form identifier:
mindat:1:1:42727:6
Classification of Nashite
The Decavanadate Cluster
Nashite contains a modified version of the decavanadate cluster with one reduced V4+ and nine V5+. The connectivity of the cluster is otherwise unchanged. Bluestreakite also contains a modified decavanadate cluster, but with two reduced V per cluster. The mixture of valence states is the cause of the dark blue-green color of nashite and bluestreakite from the intervalence charge transfer color mechanism.
IMA Classification of Nashite
Approved
IMA Formula:
Na3Ca2(H2O)22[(V4+V5+9)O28]·2H2O
Approval year:
2012
First published:
2013
Approval history:
2011-105
Type description reference:
Kampf, A. R., Hughes, J. M., Marty, J., Brown, F. H. (2013) Nashite, Na3Ca2[(V4+V5+9)O28]·24H2O, a new mineral species from the Yellow Cat Mining District, Utah and the Slick Rock Mining District, Colorado: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 51 (1) 27-38 doi:10.3749/canmin.51.1.27
4.HC.45
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 |
|---|---|---|
| Nsh | 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 Nashite
Sub-Adamantine
Transparency:
Transparent
Colour:
Bluish-green
Streak:
Light bluish-green
Hardness:
2 on Mohs scale
Comment:
ca.2
Tenacity:
Brittle
Cleavage:
Distinct/Good
One good cleavage on {010}
One good cleavage on {010}
Density:
2.350 g/cm3 (Calculated)
Comment:
Calculated: based on the empirical formula and single-crystal cell data
Optical Data of Nashite
Type:
Biaxial (-)
RI values:
nα = 1.737(3) nβ = 1.762(6) nγ = 1.775(3)
2V:
Measured: 70° , Calculated: 71°
Max. Birefringence:
δ = 0.038
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:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Optical Extinction:
Y = b; X ≈ a.
Pleochroism:
Visible
Comments:
With X greenish blue, Y yellowish green, and Z yellow, with X > Y >> Z.
Chemistry of Nashite
Mindat Formula:
Na3Ca2[(V5+9V4+)O28] · 24H2O
Element Weights:
Crystallography of Nashite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 10.0099(3) Å, b = 21.8472(7) Å, c = 11.1504(7) Å
β = 116.584(8)°
β = 116.584(8)°
Ratio:
a:b:c = 0.458 : 1 : 0.51
Unit Cell V:
2,180.67 ų (Calculated from Unit Cell)
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019804 | Nashite | Kampf A R, Hughes J M, Marty J, Brown F H (2013) Nashite, Na3Ca2[(V4+V5+9)O28]*24H2O, a new mineral species from the Yellow Cat Mining District, Utah and the Slick Rock Mining District, Colorado: crystal structure and descriptive mineralogy The Canadian Mineralogist 51 27-37 | 2013 | Little Eva mine, Grand County, Utah, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.995 Å | (46) |
| 9.044 Å | (100) |
| 8.350 Å | (64) |
| 6.962 Å | (15) |
| 5.526 Å | (17) |
| 3.501 Å | (15) |
| 2.994 Å | (13) |
| 2.652 Å | (15) |
Reference:
Kampf, A. R., Hughes, J. M., Marty, J., Brown, F. H. (2013) Nashite, Na3Ca2[(V4+V5+9)O28]·24H2O, a new mineral species from the Yellow Cat Mining District, Utah and the Slick Rock Mining District, Colorado: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 51 (1) 27-38 doi:10.3749/canmin.51.1.27
Comments:
Little Eva mine, Utah, USA. Data from the type locality.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Nashite
Co-Type Localities:
General Appearance of Type Material:
Blades on a corvusite-montroseite-bearing sandstone block
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 63583 (holotype) and 63584 (Little Eva mine), and 63585, 63586 and 63587 (St Jude mine)
Geological Setting of Type Material:
Sandstone
Associated Minerals at Type Locality:
Reference:
Kampf, A. R., Hughes, J. M., Marty, J., Brown, F. H. (2013) Nashite, Na3Ca2[(V4+V5+9)O28]·24H2O, a new mineral species from the Yellow Cat Mining District, Utah and the Slick Rock Mining District, Colorado: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 51 (1) 27-38 doi:10.3749/canmin.51.1.27
Synonyms of Nashite
Other Language Names for Nashite
Relationship of Nashite 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 |
| Okieite | Mg3[V10O28] · 28H2O | Tric. 1 : P1 |
| 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 |
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.50 | Okieite | Mg3[V10O28] · 28H2O |
| 4.HC.55 | Postite | Mg(H2O)6Al2(OH)2(H2O)8(V10O28) · 13H2O |
| 4.HC.60 | Schindlerite | {(NH4)4Na2(H2O)10}{V10O28} |
Fluorescence of Nashite
Does not fluoresce in short- or long-wave ultraviolet radiation
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 Nashite
mindat.org URL:
https://www.mindat.org/min-42727.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Nashite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 13. Mineralogical Magazine, 76 (3) 807-817 doi:10.1180/minmag.2012.076.3.26
Kampf, A. R., Hughes, J. M., Marty, J., Brown, F. H. (2013) Nashite, Na3Ca2[(V4+V5+9)O28]·24H2O, a new mineral species from the Yellow Cat Mining District, Utah and the Slick Rock Mining District, Colorado: Crystal structure and descriptive mineralogy. The Canadian Mineralogist, 51 (1) 27-38 doi:10.3749/canmin.51.1.27
Kampf, A. R., Hughes, J. M., Marty, J., Brown, F. H. (2013) [Erratum] Nashite, Na3Ca2[(V4+V5+9)O28]·24H2O, a new mineral species from the Yellow Cat minig district, Utah and the Slick Rock mining district, Colorado: crystal structure and destrictive mineralogy. The Canadian Mineralogist, 51 (2) 355-356 doi:10.3749/canmin.51.2.355
Localities for Nashite
Showing 2 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) | |
| Williams et al. (2012) +2 other references |
| Williams et al. (2012) +3 other references |
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Little Eva Mine, Yellow Cat Mesa, Thompsons Mining District, Grand County, Utah, USA