Stibiconite Mineral Data

Stibiconite Mineral Data +

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General Stibiconite Information

Chemical Formula:

Sb+++Sb+++++2O6(OH)

Composition:

Molecular Weight = 478.25 gm

Antimony 76.37 % Sb 96.44 % SbO₂

Hydrogen 0.21 % H 1.88 % H₂O

Oxygen 23.42 % O

______ ______

100.00 % 98.33 % = TOTAL OXIDE

Empirical Formula:

Sb₃O₆(OH)

Environment:

Associated as an alteration product of stibnite and other antimony minerals.

IMA Status:

Valid Species (Pre-IMA) 1862

Locality:

Altar, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

From the Latin stibium - "antimony" and the Greek konis - "powder."

Synonym:

ICSD 25552

PDF 10-388

Stibiconite Image

Images:

Stibiconite

Comments: Yellowish druses of microscopic stibiconite pseudomorphic after sharply terminated stibnite crystals.
Location: Xi Kuang Shang mine, Len Shui Jiang, Hunan Province, China. Scale: 31x11x8 cm.
© Dan Weinrich

Stibiconite Crystallography

Cell Dimensions:

a = 10.27, Z = 8; V = 1,083.21 Den(Calc)= 5.86

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

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

By Intensity(I/I_o): 2.96(1), 5.93(0.9), 1.81(0.8),

Crystal Structure:

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Dihlstrom K , Westgren A , Zeitschrift fur Anorganische und Allgemeine Chemie , 235 (1937) p.153-160, Uber den bau des sogenannten antimontetroxyds, und der damit isomorphen verbindung BiTa2O6F, Note: x(O) chosen to match reported bond lengths

Physical Properties of Stibiconite

Cleavage:

None

Color:

Brown, Gray, Lemon white, Light yellow, Orange brown.

Density:

4.1 - 5.8, Average = 4.94

Diaphaniety:

Transparent to translucent

Fracture:

Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite).

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

4-5 - Fluorite-Apatite

Luminescence:

None.

Luster:

Vitreous - Dull

Magnetism:

Nonmagnetic

Streak:

light yellow

Optical Properties of Stibiconite

Gladstone-Dale:

CI meas= -23.765 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -19.919 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.134,KPDmeas= 0.1586,KC= 0.0064

Optical Data:

Isotropic, n=1.6-1.97.

Calculated Properties of Stibiconite

Electron Density:

r_electron=5.15 gm/cc
note: r_Stibiconite=5.86 gm/cc.

Fermion Index

Fermion Index = 0.00011
Boson Index = 0.99989

Photoelectric:

PE_Stibiconite= 255.78 barns/electron
U=PE_Stibiconite x r_electron=1,316.30 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Stibiconite is Not Radioactive

Stibiconite Classification

Dana Class:

44.1.1.1 (44)Antimonates

(44.1)(A)2 (X2 O6) (O,OH,F)

(44.1.1)Dana Group

44.1.1.1 Stibiconite SbSb2O6(OH) F d3m 4/m 3 2/m

44.1.1.2 Bindheimite Pb2Sb2O6(O,OH) F d3m 4/m 3 2/m

44.1.1.3 Romeite (Ca,Fe,Mn,Na)2(Sb,Ti)2O6(O,OH,F) F d3m 4/m 3 2/m

44.1.1.3a Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m

44.1.1.4 Monimolite (Pb,Ca)2Sb2O7 F d3m 4/m 3 2/m

44.1.1.5 Stetefeldtite Ag2Sb2O6(O,OH) F d3m 4/m 3 2/m

44.1.1.6 Bismutostibiconite Bi(Sb,Fe)2O7 F d3m 4/m 3 2/m

44.1.1.7 Partzite Cu2Sb2(O,OH)7(?) F d3m 4/m 3 2/m

Strunz Class:

IV/C.11-50 IV - Oxides

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

IV/C.11 - Stibiconite group, Partzite - Bindheimite series

IV/C.11-10 Partzite Cu2Sb2(O,OH)7(?) F d3m 4/m 3 2/m

IV/C.11-20 Stetefeldtite Ag2Sb2O6(O,OH) F d3m 4/m 3 2/m

IV/C.11-30 Lewisite (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m

IV/C.11-40 Romeite (Ca,Fe,Mn,Na)2(Sb,Ti)2O6(O,OH,F) F d3m 4/m 3 2/m

IV/C.11-50 Stibiconite SbSb2O6(OH) F d3m 4/m 3 2/m

IV/C.11-60 Bismutostibiconite Bi(Sb,Fe)2O7 F d3m 4/m 3 2/m

IV/C.11-70 Bindheimite Pb2Sb2O6(O,OH) F d3m 4/m 3 2/m

Other Stibiconite Information

References:

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

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Stibiconite

Sb+++Sb+++++2O6(OH)
Dana No: 44.1.1.1 Strunz No: IV/C.11-50
Locality:

Notes: