Xitieshanite Mineral Data

Xitieshanite Mineral Data +

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General Xitieshanite Information

Chemical Formula:

Fe+++(SO4)(OH)·7(H2O)

Composition:

Molecular Weight = 295.02 gm

Iron 18.93 % Fe 27.06 % Fe₂O₃

Hydrogen 5.12 % H 45.80 % H₂O

Sulfur 10.87 % S 27.14 % SO₃

Oxygen 65.08 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺(SO₄)(OH)·7(H₂O)

IMA Status:

Approved IMA 1983

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 65615

PDF 35-719

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Xitieshanite Crystallography

Axial Ratios:

a:b:c =2.0414:1:1.545

Cell Dimensions:

a = 14.102, b = 6.908, c = 10.673, Z = 4; beta = 111.266° V = 968.93 Den(Calc)= 2.02

Crystal System:

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

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

By Intensity(I/I_o): 4.81(1), 4.96(1), 3.9(0.9),

Physical Properties of Xitieshanite

Cleavage:

[???] Indistinct

Color:

Green, Yellow green.

Density:

1.99

Diaphaniety:

Transparent to Translucent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

yellow

Optical Properties of Xitieshanite

Gladstone-Dale:

CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2861,KPDmeas= 0.2905,KC= 0.289

Optical Data:

Biaxial (-), a=1.536, b=1.57, g=1.628, bire=0.0920, 2V(Calc)=78, 2V(Meas)=77.

Calculated Properties of Xitieshanite

Electron Density:

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

Fermion Index

Fermion Index = 0.00514
Boson Index = 0.99486

Photoelectric:

PE_Xitieshanite= 6.12 barns/electron
U=PE_Xitieshanite x r_electron= 12.63 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Xitieshanite is Not Radioactive

Xitieshanite Classification

Dana Class:

31.9.6.3 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.9)where (A+ B++) (XO4) Zq·x(H2O)

(31.9.6)Dana Group

31.9.6.1 Botryogen MgFe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

31.9.6.2 Zincobotryogen (Zn,Mg,Mn)Fe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

31.9.6.3 Xitieshanite Fe(SO4)(OH)·7(H2O) P 2₁/a 2/m

Strunz Class:

VI/D.01-70 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.01 - Metahohmannite - Xitieshanite series

VI/D.01-10 Metahohmannite Fe2[O(SO4)2]·4(H2O) P1 1

VI/D.01-20 Butlerite Fe(SO4)(OH)·2(H2O) P 2₁/m 2/m

VI/D.01-30 Parabutlerite Fe(SO4)(OH)·2(H2O) Pmnb 2/m 2/m 2/m

VI/D.01-40 Amarantite Fe(SO4)(OH)·3(H2O) P1 1

VI/D.01-50 Hohmannite Fe2(SO4)2(OH)2·7(H2O) P1 1

VI/D.01-60 Fibroferrite Fe(SO4)(OH)·5(H2O) R 3 3

VI/D.01-70 Xitieshanite Fe(SO4)(OH)·7(H2O) P 2₁/a 2/m

Other Xitieshanite Information

References:

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

See Also:

Links to other databases for Xitieshanite :
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 Xitieshanite Specimen Label here :

Xitieshanite

Fe+++(SO4)(OH)·7(H2O)
Dana No: 31.9.6.3 Strunz No: VI/D.01-70
Locality:

Notes: