Bilinite

Formula : Fe3(SO4)4:22H2O

Family: 
Sulfates
Space group: 
Monoclinic - Prismatic HM symbol (2/m) Space Group: P 21/c
Dana class: 
29.7.3.5VI- 29 Hydrated Acid and Sulfates ; 29.7 Hydrated Acid and Sulfates where A(?)2 (XO4)4 . x(H2O) ; 29.7.3 Halotrichite Group (Monoclinic with 22 H2O)

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
948.132 476.448 (Ref.: 69bol/ptu) Bol'shakov, A.P. and L.I. Ptushko (1969) Alteration products of melanterite from Nikitov mercury ore deposits. Zap. Vses. Mineral. Obshch., 3, 288-294 (in Russian). -8409612 (Ref.: Internal calculation) -10121000 (Ref.: 02hem/sea) Hemingway, B.S., Seal, R.R., II, and Chou, I-M. (2002) Thermodynamic data for modeling acid mine drainage problems. Part I. Selected soluble iron-sulfate minerals. U.S. Geological Survey Open File Report 02 - 161, 13 p. 1243.000 (Ref.: 02hem/sea) Hemingway, B.S., Seal, R.R., II, and Chou, I-M. (2002) Thermodynamic data for modeling acid mine drainage problems. Part I. Selected soluble iron-sulfate minerals. U.S. Geological Survey Open File Report 02 - 161, 13 p.
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
Reaction properties

Bilinite ⇌ 2Fe+3 + 4SO4-2 + Fe+2 + 22H2O

298.15 K, 1 bar log10K: -16.34 ΔH°r:7380 J·mol-1 (Ref.: 02hem/sea) Hemingway, B.S., Seal, R.R., II, and Chou, I-M. (2002) Thermodynamic data for modeling acid mine drainage problems. Part I. Selected soluble iron-sulfate minerals. U.S. Geological Survey Open File Report 02 - 161, 13 p.
T(°C) 0 25 60 100 150 200 250 300
log10K -16.40 -16.34 -16.02 -15.31 -14.22 -13.29 -12.95 -13.91
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-7137.956276 -1.036289 385865.462637 2577.816366 -21534910.764310