Jeanbandyite Mineral Data

Jeanbandyite Mineral Data +

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General Jeanbandyite Information

Chemical Formula:

(Fe+++,Mn++)Sn++++(OH)6

Composition:

Molecular Weight = 247.09 gm

Manganese 4.45 % Mn 5.74 % MnO

Iron 15.82 % Fe 22.62 % Fe₂O₃

Tin 38.43 % Sn 48.79 % SnO₂

Hydrogen 2.45 % H 21.87 % H₂O

Oxygen 38.85 % O

______ ______

100.00 % 99.03 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺_0.7Mn²⁺_0.2Sn_0.8(OH)₆

Environment:

Oxide zone of polymetallic hydrothermal deposits epitaxially overgrown on wickmanite or natanite.

IMA Status:

Approved IMA 1982

Locality:

Llallagua, Bolivia. Link to MinDat.org Location Data.

Name Origin:

Named for Jean A. Bandy, Wickenburg, Arizona, USA, who, with her husband Mark Bandy, translated Agricola's "De Natura Fossilium" from original Latin.

Synonym:

ICSD 27661

PDF 35-663

Jeanbandyite Image

Images:

Jeanbandyite

Comments: Yellowish brown translucent microcrystal of jeanbandyite on mineral encrusted fluorite.
Location: Mount Pleasant Tin Mine, New Brunswick, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jeanbandyite Crystallography

Axial Ratios:

a:c = 1:1

Cell Dimensions:

a = 7.648, c = 7.648, Z = 4; V = 447.35 Den(Calc)= 3.67

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: P 4₁/n

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

By Intensity(I/I_o): 3.83(1), 2.71(0.7), 1.71(0.6),

Physical Properties of Jeanbandyite

Cleavage:

[001] Good, [100] Fair

Color:

Brown orange, Red brown, Pale yellow.

Density:

4.41

Diaphaniety:

Transparent to Translucent

Habit:

Crystalline - Coarse - Occurs as well-formed coarse sized crystals.

Habit:

Pseudo Octohedral - Crystals show an octohedral outline.

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Adamantine

Streak:

light yellow

Optical Properties of Jeanbandyite

Gladstone-Dale:

CI meas= 0.165 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2275,KPDmeas= 0.1893,KC= 0.2267

Optical Data:

Uniaxial (-), e=1.833, w=1.837, bire=0.0040.

Calculated Properties of Jeanbandyite

Electron Density:

r_electron=3.48 gm/cc
note: r_Jeanbandyite=3.67 gm/cc.

Fermion Index

Fermion Index = 0.06742
Boson Index = 0.93258

Photoelectric:

PE_Jeanbandyite= 117.67 barns/electron
U=PE_Jeanbandyite x r_electron= 409.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jeanbandyite is Not Radioactive

Jeanbandyite Classification

Dana Class:

6.3.7.3 (6)Hydroxides and Oxides Containing Hydroxyl

(6.3)with (OH)3 or (OH)6 groups

(6.3.7)Wickmanite group (Tetragonal: P42/n)

6.3.7.1 Stottite FeGe(OH)6 P 4₁/n 4/m

6.3.7.2 Tetrawickmanite MnSn(OH)6 P 4₁/n 4/m

6.3.7.3 Jeanbandyite (Fe,Mn)Sn(OH)6 P 4₁/n 4/m

6.3.7.4 Mopungite NaSb(OH)6 P 4₁/n 4/m

Strunz Class:

IV/F.17-30 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.17 - Stottite group, Mopungite - Stottite series

IV/F.17-10 Mopungite NaSb(OH)6 P 4₁/n 4/m

IV/F.17-20 Tetrawickmanite MnSn(OH)6 P 4₁/n 4/m

IV/F.17-30 Jeanbandyite (Fe,Mn)Sn(OH)6 P 4₁/n 4/m

IV/F.17-40 Stottite FeGe(OH)6 P 4₁/n 4/m

IV/F.17-50 Eyselite! FeGe3O7(OH) P*** Ortho

Other Jeanbandyite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Jeanbandyite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Jeanbandyite

(Fe+++,Mn++)Sn++++(OH)6
Dana No: 6.3.7.3 Strunz No: IV/F.17-30
Locality:

Notes: