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Minasragrite

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About MinasragriteHide

Formula:
(V4+O)(SO4) · 5H2O
Colour:
Blue; blue in transmitted light
Lustre:
Vitreous
Hardness:
1 - 2
Crystal System:
Monoclinic
Name:
After the type locality, Minasragra, near Cerro de Pasco, Peru.
This page provides mineralogical data about Minasragrite.


Classification of MinasragriteHide

Approved, 'Grandfathered' (first described prior to 1959)
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
29.6.12.1

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.8.5

25 : Sulphates
8 : Sulphates of Sb, V, Cr and U

Physical Properties of MinasragriteHide

Vitreous
Colour:
Blue; blue in transmitted light
Hardness:
1 - 2 on Mohs scale
Cleavage:
None Observed

Optical Data of MinasragriteHide

Type:
Biaxial (-)
RI values:
nα = 1.513 nβ = 1.536 nγ = 1.545
Max Birefringence:
δ = 0.032
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong
Pleochroism:
Visible
Comments:
X = Deep blue
Y = Blue
Z = Colourless

Chemical Properties of MinasragriteHide

Formula:
(V4+O)(SO4) · 5H2O
IMA Formula:
V4+O(SO4) · 5H2O

Crystallography of MinasragriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.94 Å, b = 9.74 Å, c = 7 Å
β = 110.93°
Ratio:
a:b:c = 1.329 : 1 : 0.719
Unit Cell V:
824.04 ų (Calculated from Unit Cell)
Morphology:
Minute crystals forming efflorescences; granular aggregates; small mammillary masses; spherulites.

Type Occurrence of MinasragriteHide

General Appearance of Type Material:
Efflorescences on patronite.
Associated Minerals at Type Locality:

Other Language Names for MinasragriteHide

Simplified Chinese:钒矾
Spanish:Minasragrita
Traditional Chinese:釩礬

Relationship of Minasragrite to other SpeciesHide

Other Members of this group:
Anorthominasragrite(V4+O)(SO4) · 5H2OTric. 1 : P1
Orthominasragrite(V4+O)(SO4) · 5H2OOrth. mm2 : Pmn21

Common AssociatesHide

Associated Minerals Based on Photo Data:
10 photos of Minasragrite associated with PatróniteVS4
2 photos of Minasragrite associated with RetgersiteNiSO4 · 6H2O
1 photo of Minasragrite associated with GypsumCaSO4 · 2H2O

Related Minerals - Nickel-Strunz GroupingHide

7.DB.05AubertiteCuAl(SO4)2Cl · 14H2OTric. 1
7.DB.05Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
7.DB.05Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2OTric.
7.DB.10KhademiteAl(SO4)F · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.10RostiteAl(SO4)(OH) · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.15JurbaniteAl(SO4)(OH) · 5H2OMon.
7.DB.20Orthominasragrite(V4+O)(SO4) · 5H2OOrth. mm2 : Pmn21
7.DB.20Anorthominasragrite(V4+O)(SO4) · 5H2OTric. 1 : P1
7.DB.25Bobjonesite(V4+O)(SO4) · 3H2OMon. 2/m
7.DB.30AmarantiteFe3+2(SO4)2O · 7H2OTric. 1
7.DB.30HohmanniteFe3+2(SO4)2O · 8H2OTric. 1
7.DB.30MetahohmanniteFe3+2(SO4)2O · 4H2OTric. 1 : P1
7.DB.35AluminocopiapiteAl2/3Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CalciocopiapiteCaFe4(SO4)6(OH)2 · 10H2OTric. 1 : P1
7.DB.35CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CuprocopiapiteCuFe4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35FerricopiapiteFe5(SO4)6O(OH) · 20H2OTric. 1 : P1
7.DB.35MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2OTric.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.8.1KlebelsbergiteSb4O4(SO4)(OH)2Orth. mm2
25.8.2CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)Tric. 1 : P1
25.8.3PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2OMon. 2/m : B2/b
25.8.4CannoniteBi2(SO4)O(OH)2Mon. 2/m : P21/b
25.8.6Stanleyite(V4+O)(SO4) · 6H2OOrth.
25.8.7Redingtonite(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2OMon.
25.8.8Metauranopilite(UO2)6(SO4)(OH)10 · 5H2O
25.8.9Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2OMon.
25.8.10NatrozippeiteNa5(UO2)8(SO4)4O5(OH)3 · 12H2OMon. 2/m : P21/m
25.8.11ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2OMon. 2 : B2
25.8.12JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2OTric. 1
25.8.13MagnesiozippeiteMg(UO2)2(SO4)O2 · 3.5H2OMon. 2/m : B2/m
25.8.14ZinczippeiteZn(UO2)2(SO4)O2 · 3.5H2OMon. 2/m : B2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MinasragriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schaller (1915) Journal of the Washington Academy of Sciences: 5: 7.
Schaller (1917) Journal of the Washington Academy of Sciences: 7: 501.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 110.
Palache, Charles (1934), Contributions to crystallography; claudetite, minasragrite, samsonite, native selenium, indium: American Mineralogist: 19: 194-205; …(abstract): American Mineralogist: 19: 128 (1934).
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 437-438.
American Mineralogist (1973): 58: 531-534.
Acta Crystallographica (1979): B35: 1545-1550.

Internet Links for MinasragriteHide

Localities for MinasragriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Peru (TL)
 
  • Pasco
    • Pasco Province
      • Huayllay District
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 438, 498; Washington Academy of Science (1915): 5: 7.
USA
 
  • Utah
    • Emery Co.
      • San Rafael Mining District (San Rafael Swell)
        • Temple Mountain
Canadian Mineralogist 39:1325-1331
 
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