Mineralogy Database

Magnesiopascoite Mineral Data

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General Magnesiopascoite Information

Help on Chemical  Formula: Chemical Formula: Ca2Mg[V10O28]•16H2O
Help on Composition: Composition: Molecular Weight = 1,341.11 gm
   Calcium     5.29 %  Ca    7.40 % CaO
   Magnesium   1.54 %  Mg    2.55 % MgO
   Vanadium   37.98 %  V    67.81 % V2O5
   Zinc        0.20 %  Zn    0.24 % ZnO
   Cobalt      0.04 %  Co    0.06 % CoO
   Hydrogen    2.45 %  H    21.94 % H2O
   Oxygen     52.49 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.77Mg0.85Zn0.04Co0.01(H2O)15.34(H3O)0.66V5+10O28
Help on Environment: Environment: Formed from post-mining leaching and oxidation of V-U oxide-replacement assemblage developed at the expense of organic material. Pascoite group.
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Blue Cap mine, about 15 km east of La Sal, San Juan Co., Utah, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Mg analogue of pascoite
Help on Synonym: Synonym: IMA2007-025

Magnesiopascoite Image

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Comments: Intergrowth of orange magnesiopascoite crystals on V-U oxide replacement of organic material. CanMin v46:.
Location: Blue Cap mine, near La Sal, San Juan County, Utah, U.S.A.. Scale: Crystal size 2.2mm across.
© Canadian Mineralogist

Magnesiopascoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.9973:1:1.0784
Help on Cell Dimensions: Cell Dimensions: a = 19.8442, b = 9.9353, c = 10.7149, Z = 2; beta = 120.305° V = 1,823.86 Den(Calc)= 2.44
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.571(1), 7.27(0.4), 8.872(0.3),2.137(0.2), 9.242(0.2), 4.355(0.15), 4.59(0.15), 5.477(0.15),

Physical Properties of Magnesiopascoite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Bright orange.
Help on Density: Density: 2.43
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellow

Optical Properties of Magnesiopascoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3249,KPDmeas= 0.3262,KC= 0.3263
Ncalc = 1.79 - 1.8
Help on Optical Data: Optical Data: Biaxial (-), a=1.769, b=1.802, g=1.807, bire=0.0380, 2V(Calc)=40, 2V(Meas)=45. Dispersion r < v crossed.

Calculated Properties of Magnesiopascoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.40 gm/cc
note: Specific Gravity of Magnesiopascoite =2.43 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0028970877
Boson Index = 0.9971029123
Help on Photoelectric: Photoelectric: PEMagnesiopascoite = 7.96 barns/electron
U=PEMagnesiopascoite x rElectron Density= 19.08 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Magnesiopascoite is Not Radioactive

Magnesiopascoite Classification

Help on  Dana Class: Dana Class: (47)Vanadium Oxysalts
  (47.02.01)Pascoite Group Pascoite Ca3V10O28•17(H2O) C 2/m 2/m Magnesiopascoite! Ca2Mg[V10O28]•16H2O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.HC.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HC -[6]-Sorovanadates
04.HC.05 Pascoite Ca3V10O28•17(H2O) C 2/m 2/m
04.HC.05 Magnesiopascoite! Ca2Mg[V10O28]•16H2O C 2/m 2/m
04.HC.05 Lasalite! Na2Mg2(V10O28)•20H2O C 2/c 2/m

Other Magnesiopascoite Information

Help on References: References: NAME( CanMin, v46:679) PHYS. PROP.(CanMin, v46:679) OPTIC PROP.(CanMin, v46:679)
Help on See Also: See Also: Links to other databases for Magnesiopascoite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 04.HC.05





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