Bilinite Mineral Data
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 % Fe2 O3
Hydrogen 4.68 % H 41.80 % H2 O
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(H2 O)
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.
Name Pronunciation:
Bilinite
Bilinite Image
Images:
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 - Prismatic H-M Symbol (2/m) Space Group: P 21 /c
X Ray Diffraction:
By Intensity(I/Io ): 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
Diaphaneity:
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
Gladstone-Dale:
CI meas = 0.007 (Superior) - where the CI = (1-KPDmeas /KC ) CI calc = 0.067 (Fair) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2513,KPDmeas = 0.2674,KC = 0.2692 Ncalc = 1.5 - 1.54
Optical Data:
Biaxial (+/-), b=1.5
Calculated Properties of Bilinite
Electron Density:
Bulk Density (Electron Density)=1.93 gm/cc note: Specific Gravity of Bilinite =1.87 gm/cc.
Fermion Index:
Fermion Index = 0.0050755938 Boson Index = 0.9949244062
Photoelectric:
PEBilinite = 5.92 barns/electronU=PEBilinite x r Electron Density= 11.45 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bilinite is Not Radioactive
Bilinite Classification
Dana Class:
29.07.03.05 (29) Hydrated Acid and Sulfates
(29.07) where A (B)2 (XO4)4 � x(H2O)
(29.07.03) Halotrichite Group (Monoclinic with 22 H2O)
29.07.03.01 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2
29.07.03.02 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2
29.07.03.03 Apjohnite MnAl2(SO4)4•22(H2O) P 21 /c 2/m
29.07.03.04 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 21 /c 2/m
29.07.03.05 Bilinite FeFe2(SO4)4•22(H2O) P 21 /c 2/m
29.07.03.06 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono
29.07.03.07 Wupatkiite (Co,Mg,Ni)Al2(SO4)4•22(H2O) P 21 /c 2/m
Strunz Class:
07.CB.85 07 - SULFATES (SELENATES, TELLURATES)
07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
07.CB -With only medium-sized cations
07.CB.85 Bilinite FeFe2(SO4)4•22(H2O) P 21 /c 2/m
07.CB.85 Apjohnite MnAl2(SO4)4•22(H2O) P 21 /c 2/m
07.CB.85 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 21 /c 2/m
07.CB.85 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2
07.CB.85 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2
07.CB.85 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono
07.CB.85 Wupatkiite (Co,Mg,Ni)Al2(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 - 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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Print or Cut-and-Paste your Bilinite Specimen Label here :
Bilinite
Fe++Fe+++2(SO4)4•22(H2O)
Dana No: 29.07.03.05 Strunz No: 07.CB.85
Locality:
Notes:
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