Sabieite Mineral Data

General Sabieite Information

Chemical Formula:

(NH4)Fe+++(SO4)2

Composition:

Molecular Weight = 266.01 gm

Iron 20.99 % Fe 30.02 % Fe₂O₃

Hydrogen 1.52 % H - % Calc as (NH₄)₂O

Sulfur 24.11 % S 60.20 % SO₃

Nitrogen 5.27 % N 9.79 % (NH₄)₂O

Oxygen 48.12 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

(NH₄)Fe³⁺(SO₄)₂

Environment:

Derived from the dehydration of lonecreekite.

IMA Status:

Approved IMA 1983

Locality:

Lone Creek cavern, near Sabie, Transvaal, South Africa. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Sabieite

Sabieite Image

Images:

Sabieite

Comments: Massive, porous aggregate of sabieite.
Location: Carola Mine, Freital, Dresden, Saxony, Germany. Scale: Picture size 4.5 cm.
© Thomas Witzke / Abraxas-Verlag

Sabieite Crystallography

Axial Ratios:

a:c = 1:1.69423

Cell Dimensions:

a = 4.822, c = 8.1696, Z = 1; V = 164.51 Den(Calc)= 2.68

Crystal System:

Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: P 3₂1

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

By Intensity(I/I_o): 8.19(1), 2.409(0.3), 3.72(0.2),

Physical Properties of Sabieite

Color:

White.

Density:

2.68 - 2.69, Average = 2.68

Diaphaneity:

Transparent

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Habit:

Powdery - Forms a loose, poorly-coherent pulverulent mass.

Hardness:

2 - Gypsum

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Sabieite

Gladstone-Dale:

CI meas= -0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.088 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2188,KPDmeas= 0.2184,KC= 0.2011
Ncalc = 1.54

Optical Data:

Uniaxial (+), w=1.578, e=1.595, bire=0.0170.

Calculated Properties of Sabieite

Electron Density:

Bulk Density (Electron Density)=2.68 gm/cc
note: Specific Gravity of Sabieite =2.69 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Sabieite= 7.60 barns/electron
U=PE_Sabieite x rElectron Density= 20.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sabieite is Not Radioactive

Sabieite Classification

Dana Class:

28.03.05.01 (28)Anhydrous Acid and Sulfates

(28.03)(A++) XO4

(28.03.05)Dana Group

28.03.05.01 Sabieite (NH4)Fe(SO4)2 P 3₂1 3 2

28.03.05.02 Godovikovite (NH4)(Al,Fe)(SO4)2 P 3₂1 3 2

Strunz Class:

07.AC.20 07 - SULFATES (SELENATES, TELLURATES)

07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O

07.AC -With medium-sized and large cations

07.AC.20 Godovikovite (NH4)(Al,Fe)(SO4)2 P 3₂1 3 2

07.AC.20 Sabieite (NH4)Fe(SO4)2 P 3₂1 3 2

Other Sabieite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

Sabieite

(NH4)Fe+++(SO4)2
Dana No: 28.03.05.01 Strunz No: 07.AC.20
Locality:

Notes:

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