Delrioite Mineral Data

General Delrioite Information

Chemical Formula:

CaSrV2O6(OH)2•3(H2O)

Composition:

Molecular Weight = 413.64 gm

Strontium 21.18 % Sr 25.05 % SrO

Calcium 9.69 % Ca 13.56 % CaO

Vanadium 24.63 % V 43.97 % V₂O₅

Hydrogen 1.95 % H 17.42 % H₂O

Oxygen 42.55 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaSrV⁵⁺₂O₆(OH)₂•3(H₂O)

Environment:

Coatings on sandstone.

IMA Status:

Approved IMA 1959

Locality:

Jo Dandy mine, Montrose County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Andres M. del Rio (1764-1849), Mexican mineralogist, who discovered vanadium.

Name Pronunciation:

Delrioite + Pronunciation

Delrioite Image

Images:

Delrioite Metadelrioite

Comments: Yellow metadelrioite and delrioite, with orange rossite/metarossite on a sandstone matrix. See inset image.
Location: Jo Dandy Mine, Montrose CO., USA. Scale: 6 1/4" x 5 1/2".
© Chris Wright / Wrights Rock Shop

Delrioite Crystallography

Axial Ratios:

a:b:c =2.4247:1:2.068

Cell Dimensions:

a = 17.17, b = 7.081, c = 14.644, Z = 8; beta = 102.483° V = 1,738.34 Den(Calc)= 3.16

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I/a or I2/a

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

By Intensity(I/I_o): 6.525(1), 3.539(0.8), 4.387(0.6),

Physical Properties of Delrioite

Color:

Yellow brown, Light yellow green, Dark green.

Density:

3.1

Diaphaneity:

Translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2 - Gypsum

Luster:

Vitreous - Pearly

Streak:

pale yellow green

Optical Properties of Delrioite

Gladstone-Dale:

CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2619,KPDmeas= 0.267,KC= 0.2735
Ncalc = 1.85 - 1.86

Optical Data:

Biaxial (-), a=1.783, b=1.834, g=1.866, bire=0.0830

Pleochroism (x):

colorless.

Pleochroism (y):

pale yellow.

Pleochroism (z):

yellow.

Calculated Properties of Delrioite

Electron Density:

Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Delrioite =3.10 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Delrioite= 29.11 barns/electron
U=PE_Delrioite x rElectron Density= 87.27 barns/cc.

Radioactivity:

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

Delrioite Classification

Dana Class:

47.01.02.01 (47)Vanadium Oxysalts

(47.01)(Normal VO3)

(47.01.02)Delrioite Group

47.01.02.01 Delrioite CaSrV2O6(OH)2•3(H2O) I/a or I2/a 2/m

47.01.02.02 Metadelrioite CaSrV2O6(OH)2•(H2O) P1 1

Strunz Class:

04.HG.35 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.H - V[5,6] Vanadates

04.HG -Unclassified V oxides

04.HG.35 Delrioite CaSrV2O6(OH)2•3(H2O) I/a or I2/a 2/m

Other Delrioite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Delrioite :
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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Ask about Delrioite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Delrioite

CaSrV2O6(OH)2•3(H2O)
Dana No: 47.01.02.01 Strunz No: 04.HG.35
Locality:

Notes: