Bilinite Mineral Data

Bilinite Mineral Data +

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General Bilinite Information

Chemical Formula:

Fe++Fe+++2(SO4)4·22(H2O)

Composition:

Molecular Weight = 948.13 gm

Iron 17.67 % Fe 7.58 % FeO / 16.84 % Fe₂O₃

Hydrogen 4.68 % H 41.80 % H₂O

Sulfur 13.53 % S 33.78 % SO₃

Oxygen 64.12 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺Fe³⁺₂(SO₄)₄·22(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1913

Locality:

Schwaz, near Bilin, Bohemia, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Bilinite Image

Images:

Bilinite

Comments: Powdery crust of white bilinite on pyrite.
Location: Bisbee, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bilinite Crystallography

Axial Ratios:

a:b:c =0.2551:1:0.8735

Cell Dimensions:

a = 6.208, b = 24.333, c = 21.255, Z = 4; beta = 100.3° V = 3,159.02 Den(Calc)= 1.99

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.51(1), 4.21(1), 4.85(0.5),4.1(0.4), 2.89(0.3), 3.29(0.3), 4.96(0.3), 5.48(0.3),

Physical Properties of Bilinite

Color:

White, Yellow.

Density:

1.87

Diaphaniety:

Transparent

Habit:

Fibrous - Crystals made up of fibers.

Habit:

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

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Bilinite

Optical Data:

Biaxial (+/-), b=1.5

Calculated Properties of Bilinite

Electron Density:

r_electron=2.06 gm/cc
note: r_Bilinite=1.99 gm/cc.

Fermion Index

Fermion Index = 0.00507
Boson Index = 0.99493

Photoelectric:

PE_Bilinite= 5.92 barns/electron
U=PE_Bilinite x r_electron= 12.18 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bilinite is Not Radioactive

Bilinite Classification

Dana Class:

29.7.3.5 (29)Hydrated Acid and Sulfates

(29.7)where A (B)2 (XO4)4 · x(H2O)

(29.7.3)Halotrichite Group (Monoclinic with 22 H2O)

29.7.3.1 Pickeringite MgAl2(SO4)4·22(H2O) P 2 2

29.7.3.2 Halotrichite FeAl2(SO4)4·22(H2O) P 2 2

29.7.3.3 Apjohnite MnAl2(SO4)4·22(H2O) P 2₁/c 2/m

29.7.3.4 Dietrichite (Zn,Fe,Mn)Al2(SO4)4·22(H2O) P 2₁/c 2/m

29.7.3.5 Bilinite FeFe2(SO4)4·22(H2O) P 2₁/c 2/m

29.7.3.6 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4·22(H2O) Mono

29.7.3.7 Wupatkiite (Co,Mg,Ni)Al2(SO4)4·22(H2O) P 2₁/c 2/m

Strunz Class:

VI/C.12-60 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium and very big size

VI/C.12 - Halotrichite group, Pickeringite - Bilinite

VI/C.12-10 Pickeringite MgAl2(SO4)4·22(H2O) P 2 2

VI/C.12-12 Wupatkiite (Co,Mg,Ni)Al2(SO4)4·22(H2O) P 2₁/c 2/m

VI/C.12-20 Halotrichite FeAl2(SO4)4·22(H2O) P 2 2

VI/C.12-30 Apjohnite MnAl2(SO4)4·22(H2O) P 2₁/c 2/m

VI/C.12-40 Dietrichite (Zn,Fe,Mn)Al2(SO4)4·22(H2O) P 2₁/c 2/m

VI/C.12-50 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4·22(H2O) Mono

VI/C.12-60 Bilinite FeFe2(SO4)4·22(H2O) P 2₁/c 2/m

Other Bilinite Information

References:

NAME( Dana8) PHYS. PROP.(Ford32) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Bilinite :
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 -École des Mines de Paris

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

Bilinite

Fe++Fe+++2(SO4)4·22(H2O)
Dana No: 29.7.3.5 Strunz No: VI/C.12-60
Locality:

Notes: