Minasragrite Mineral Data

Minasragrite Mineral Data +

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General Minasragrite Information

Chemical Formula:

VO(SO4)·5(H2O)

Composition:

Molecular Weight = 253.08 gm

Vanadium 20.13 % V 35.93 % V₂O₅

Hydrogen 3.98 % H 35.59 % H₂O

Sulfur 12.67 % S 31.64 % SO₃

Oxygen 63.22 % O

______ ______

100.00 % 103.16 % = TOTAL OXIDE

Empirical Formula:

V⁵⁺O(SO₄)·5(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1915

Locality:

Mina Ragra (Minasragra), Junin, Cerro de Pasco, Peru. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 8103

PDF 26-1393

Minasragrite Image

Images:

Click Here for Larger Minasragrite Image

Minasragrite Patronite

Comments: Blue coatings of minasragrite on patronite.
Location: Minas Ragra, near Cerro de Pasco, Junin, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minasragrite Crystallography

Axial Ratios:

a:b:c =1.3281:1:0.7186

Cell Dimensions:

a = 12.947, b = 9.748, c = 7.005, Z = 4; beta = 110.93° V = 825.75 Den(Calc)= 2.04

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 5.135(1), 3.907(0.7), 5.431(0.6),

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Forms: [ 1 1 1] [ 0 1 1] [ 1 1 0] [ 1 0 1] [ 0 0 1]

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Physical Properties of Minasragrite

Cleavage:

None

Color:

Blue.

Density:

2.03

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Vitreous (Glassy)

Streak:

light blue

Optical Properties of Minasragrite

Gladstone-Dale:

CI meas= 0.125 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.129 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2605,KPDmeas= 0.2617,KC= 0.2992

Optical Data:

Biaxial (-), a=1.513, b=1.536, g=1.545, bire=0.0320

Calculated Properties of Minasragrite

Electron Density:

r_electron=2.07 gm/cc
note: r_Minasragrite=2.03 gm/cc.

Fermion Index

Fermion Index = 0.00176
Boson Index = 0.99824

Photoelectric:

PE_Minasragrite= 4.51 barns/electron
U=PE_Minasragrite x r_electron= 9.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Minasragrite is Not Radioactive

Minasragrite Classification

Dana Class:

29.6.12.1 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.12)Minasragrite Group (Monclinic and Triclinic)

29.6.12.1 Minasragrite VO(SO4)·5(H2O) P 2₁/a 2/m

29.6.12.2 Bobjonesite! VO(SO4)(H2O)3 P 2₁/m 2/m

29.6.12.3 Anorthominasragrite! VO(SO4)(H2O)5 P1 1

Strunz Class:

VI/D.05-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.05 - Minasragrite - Stanleyite series

VI/D.05-03 Bobjonesite! VO(SO4)(H2O)3 P 2₁/m 2/m

VI/D.05-05 Orthominasragrite! VO(SO4)·5(H2O) P mn2₁ mm2

VI/D.05-06 Anorthominasragrite! VO(SO4)(H2O)5 P1 1

VI/D.05-10 Minasragrite VO(SO4)·5(H2O) P 2₁/a 2/m

VI/D.05-20 Stanleyite (VO)SO4·6(H2O) Unk Ortho

Other Minasragrite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Minasragrite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Minasragrite Specimen Label here :

Minasragrite

VO(SO4)·5(H2O)
Dana No: 29.6.12.1 Strunz No: VI/D.05-10
Locality:

Notes: