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 32.77 % VO₂

Hydrogen 3.98 % H 35.59 % H₂O

Sulfur 12.67 % S 31.64 % SO₃

Oxygen 63.22 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

V⁴⁺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.

Name Pronunciation:

Minasragrite + Pronunciation

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),

Forms:

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Forms: ( 1 1 1) ( 0 1 1) ( 1 1 0) ( 1 0 1) ( 0 0 1)

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Crystal Structure:

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Tachez M , Theobald F R , Watson K J , Mercier R , Acta Crystallographica, Section B , 35 (1979) p.1545-1550, Redetermination de la structure du sulfate de vanadyle pentahydrate VOSO4*5H2O, Locality: synthetic, Note: anisoB s from ICSD

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= 0.144 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.148 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2605,KPDmeas= 0.2617,KC= 0.3058
Ncalc = 1.62

Optical Data:

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

Calculated Properties of Minasragrite

Electron Density:

Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Minasragrite =2.03 gm/cc.

Fermion Index:

Fermion Index = 0.0017629058
Boson Index = 0.9982370942

Photoelectric:

PE_Minasragrite= 4.51 barns/electron
U=PE_Minasragrite x rElectron Density= 9.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Minasragrite is Not Radioactive

Minasragrite Classification

Dana Class:

29.06.12.01 (29)Hydrated Acid and Sulfates

(29.06)where A XO4 · x(H2O)

(29.06.12)Minasragrite Group (Monclinic and Triclinic)

29.06.12.01 Minasragrite VO(SO4)•5(H2O) P 2₁/a 2/m

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

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

Strunz Class:

07.DB.20 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DB -With only medium-sized cations; insular octahedra and finite groups

07.DB.20 Minasragrite VO(SO4)•5(H2O) P 2₁/a 2/m

07.DB.20 Orthominasragrite! VO(SO4)•5(H2O) P mn2₁ mm2

07.DB.20 Anorthominasragrite! VO(SO4)(H2O)5 P1 1

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Minasragrite

VO(SO4)•5(H2O)
Dana No: 29.06.12.01 Strunz No: 07.DB.20
Locality:

Notes: