Minasragrite
A valid IMA mineral species - grandfathered
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About Minasragrite
Formula:
(V4+O)(SO4) · 5H2O
Colour:
Vivid cobalt-blue to pale aquamarine-blue; blue in transmitted light
Lustre:
Vitreous
Hardness:
1 - 2
Specific Gravity:
2.03
Crystal System:
Monoclinic
Member of:
Name:
After the type locality, Minasragra, near Cerro de Pasco, Peru.
Type Locality:
Polymorph of:
This page provides mineralogical data about Minasragrite.
Unique Identifiers
Mindat ID:
2717
Long-form identifier:
mindat:1:1:2717:1
GUID
(UUID V4):
(UUID V4):
398f9472-2674-4e95-9584-c19d577086f6
IMA Classification of Minasragrite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
V4+O(SO4) · 5H2O
First published:
1915
Type description reference:
Classification of Minasragrite
7.DB.20
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
29.6.12.1
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.8.5
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
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 |
|---|---|---|
| Mra | 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 Minasragrite
Vitreous
Transparency:
Translucent
Colour:
Vivid cobalt-blue to pale aquamarine-blue; blue in transmitted light
Hardness:
1 - 2 on Mohs scale
Cleavage:
None Observed
Density:
2.03(10) g/cm3 (Measured) 2.06 g/cm3 (Calculated)
Optical Data of Minasragrite
Type:
Biaxial (-)
RI values:
nα = 1.513(2) nβ = 1.536(2) nγ = 1.545(2)
Max Birefringence:
δ = 0.032
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:
Low
Dispersion:
strong
Pleochroism:
Visible
Comments:
X = Deep blue
Y = Blue
Z = Colourless
Y = Blue
Z = Colourless
Comments:
2V(meas.) = Medium large.
Chemistry of Minasragrite
Mindat Formula:
(V4+O)(SO4) · 5H2O
Elements listed:
Crystallography of Minasragrite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 12.902(4) Å, b = 9.716(5) Å, c = 6.976(2) Å
β = 110.93(3)°
β = 110.93(3)°
Ratio:
a:b:c = 1.328 : 1 : 0.718
Unit Cell V:
816.78 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Minute crystals forming efflorescences; granular aggregates; small mammillary masses; spherulites.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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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) |
|---|---|---|---|---|---|---|---|
| 0009674 | Minasragrite | Tachez M, Theobald F R, Watson K J, Mercier R (1979) Redetermination de la structure du sulfate de vanadyle pentahydrate VOSO4*5H2O Acta Crystallographica B35 1545-1550 |  | 1979 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.135 Å | (100) |
| 3.907 Å | (70) |
| 5.431 Å | (60) |
| 3.826 Å | (35) |
| 3.658 Å | (24) |
| 6.049 Å | (20) |
| 3.509 Å | (17) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47e : [Vanadates, chromates, manganates] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 53 : Other minerals with taphonomic origins | <0.4 |
Type Occurrence of Minasragrite
General Appearance of Type Material:
Efflorescences on patronite.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 87515.
Associated Minerals at Type Locality:
Reference:
Schaller, W.T. (1915) Four new minerals. Journal of the Washington Academy of Sciences: 5: 7-7.
Other Language Names for Minasragrite
German:Minasragrit
Russian:Минасрагрит
Simplified Chinese:钒矾
Spanish:Minasragrita
Traditional Chinese:釩礬
Relationship of Minasragrite to other Species
Member of:
Other Members of this group:
| Anorthominasragrite | (V4+O)(SO4) · 5H2O | Tric. 1 : P1 |
| Orthominasragrite | (V4+O)(SO4) · 5H2O | Orth. mm2 : Pmn21 |
Common Associates
Associated Minerals Based on Photo Data:
| 10 photos of Minasragrite associated with Patrónite | VS4 |
| 2 photos of Minasragrite associated with Retgersite | NiSO4 · 6H2O |
| 1 photo of Minasragrite associated with Dwornikite | Ni(SO4) · H2O |
| 1 photo of Minasragrite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O |
| 7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O |
| 7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O |
| 7.DB.10 | Khademite | Al(SO4)F · 5H2O |
| 7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O |
| 7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O |
| 7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O |
| 7.DB.27 | Karpovite | Tl2VO(SO4)2(H2O) |
| 7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O |
| 7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O |
| 7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O |
| 7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Calciocopiapite | CaFe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
Other Information
Notes:
Easily soluble in cold H2O.
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 Minasragrite
mindat.org URL:
https://www.mindat.org/min-2717.html
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References for Minasragrite
Localities for Minasragrite
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.
Peru (TL) | |
| Schaller (1915) +3 other references |
USA | |
| Hawthorne et al. (2001) |
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Ragra Mine, Huayllay District, Pasco Province, Pasco, Peru