Valentinite Mineral Data

Valentinite Mineral Data +

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General Valentinite Information

Chemical Formula:

Sb2O3

Composition:

Molecular Weight = 291.50 gm

Antimony 83.53 % Sb 100.00 % Sb₂O₃

Oxygen 16.47 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Sb₂O₃

Environment:

Occurs as an oxidation product of various antimony minerals.

IMA Status:

Valid Species (Pre-IMA) 1845

Locality:

Chalanches, Allemont, Isère, France. Link to MinDat.org Location Data.

Name Origin:

Named after the German alchemist, B. Valentinus (16th century).

Synonym:

Antimony bloom

ICSD 27595

PDF 11-689

Valentinite Image

Images:

Valentinite Cetineite

Comments: Orange-reddish acicular crystals of cetineite with white valentinite.
Location: Cetine di Cotorniano mine (Cetine mine), Rosia, Siena, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Valentinite Rosiaite

Comments: Beige crystals of rosiaite with a colorless valentinite prism.
Location: Tafone Mine, Manciano, Grosseto, Tuscany, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Valentinite

Comments: 6mm spray of bladed valentinite crystals on siderite matrix.
Location: Potosi, Bolivia. Scale: Picture size 1.5 cm.
© John Attard

Images:

Valentinite Antimony

Comments: Beige valentinite crystals with red kermesite in a matrix of gray, massive antimony.
Location: South-Ham Antimony mine, Lake Nicolet, Quebec, Canada. Scale: Picture Size 3 cm.
© Dave Barthelmy

Valentinite Crystallography

Axial Ratios:

a:b:c =0.3948:1:0.4349

Cell Dimensions:

a = 4.92, b = 12.46, c = 5.42, Z = 4; V = 332.26 Den(Calc)= 5.83

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pccn

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

By Intensity(I/I_o): 3.142(1), 3.118(0.75), 3.494(0.25),

Forms:

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Forms: [ 3 1 0] [ 0 1 0] [ 1 2 2] [ 1 0 0] [ 1 1 0] [ 1 0 2]

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Crystal Structure:

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Buerger M J , American Mineralogist , 21 (1936) p.206-207, The crystal structure of valentinite

View Additional jPOWD Structure files for Valentinite
[1] [2] [3]

Physical Properties of Valentinite

Cleavage:

[110] Perfect, [010] Distinct

Color:

Brownish reddish, Colorless, Gray white, Grayish, Yellowish.

Density:

5.6 - 5.8, Average = 5.69

Diaphaniety:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Divergent - Crystals radiate from a center without producing stellar forms.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

None.

Luster:

Adamantine

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Valentinite

Gladstone-Dale:

CI meas= -0.118 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.093 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2218,KPDmeas= 0.2269,KC= 0.203

Optical Data:

Biaxial (-), a=2.18, b=2.35, g=2.35, bire=0.1700

Pleochroism (x):

none.

Pleochroism (y):

none.

Pleochroism (z):

none.

Calculated Properties of Valentinite

Electron Density:

r_electron=5.04 gm/cc
note: r_Valentinite=5.83 gm/cc.

Fermion Index

Fermion Index = 0.00007
Boson Index = 0.99993

Photoelectric:

PE_Valentinite= 284.15 barns/electron
U=PE_Valentinite x r_electron=1,432.14 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Valentinite is Not Radioactive

Valentinite Classification

Dana Class:

4.3.11.1 (4)Simple Oxides

(4.3)with a cation charge of 3+ (A+++2 O3)

(4.3.11)Dana Group

4.3.11.1 Valentinite Sb2O3 Pccn 2/m 2/m 2/m

Strunz Class:

IV/C.01-20 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.01 - Claudetite - Valentinite series

IV/C.01-10 Claudetite As2O3 P 2₁/n 2/m

IV/C.01-20 Valentinite Sb2O3 Pccn 2/m 2/m 2/m

IV/C.01-30 Auroantimonate* AuSbO3 Ortho ? Ortho

Other Valentinite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Valentinite

Sb2O3
Dana No: 4.3.11.1 Strunz No: IV/C.01-20
Locality:

Notes: