Kieserite Mineral Data

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General Kieserite Information

Chemical Formula:

MgSO4•(H2O)

Composition:

Molecular Weight = 138.38 gm

Magnesium 17.56 % Mg 29.13 % MgO

Hydrogen 1.46 % H 13.02 % H₂O

Sulfur 23.17 % S 57.86 % SO₃

Oxygen 57.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(SO₄)•(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1860

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named after D. G. Kieserr. President of the Academy in Jena, Germany (1770-1826).

Name Pronunciation:

Kieserite + Pronunciation

Synonym:

ICSD 68345

PDF 33-882

Kieserite Image

Images:

Kieserite

Comments: Translucent crystalline mass of kieserite with white alteration products.
Location: Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kieserite Crystallography

Axial Ratios:

a:b:c =0.8949:1:0.9779

Cell Dimensions:

a = 6.9, b = 7.71, c = 7.54, Z = 4; beta = 116.17° V = 360.00 Den(Calc)= 2.55

Crystal System:

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

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

By Intensity(I/I_o): 3.409(1), 3.331(0.9), 4.84(0.9),

Forms:

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Forms: ( 1 1 1) ( 1 1 0) ( 1 1 2)

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Crystal Structure:

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Hawthorne F C , Groat L A , Raudsepp M , Ercit T S , Neues Jahrbuch fur Mineralogie, Abhandlungen , 157 (1987) p.121-132, Kieserite, Mg(SO4)(H2O), a titanite-group mineral, Locality: Wathlingen, Hanover, Germany

Physical Properties of Kieserite

Cleavage:

{110} Perfect, {111} Perfect

Color:

Colorless, Green yellow, Gray white, Yellowish, White.

Density:

2.57

Diaphaneity:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

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

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Kieserite

Gladstone-Dale:

CI meas= -0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.214,KPDmeas= 0.2123,KC= 0.2049
Ncalc = 1.52 - 1.53

Optical Data:

Biaxial (+), a=1.52, b=1.533, g=1.584, bire=0.0640, 2V(Calc)=56, 2V(Meas)=55.

Calculated Properties of Kieserite

Electron Density:

Bulk Density (Electron Density)=2.60 gm/cc
note: Specific Gravity of Kieserite =2.57 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Kieserite= 1.82 barns/electron
U=PE_Kieserite x rElectron Density= 4.73 barns/cc.

Radioactivity:

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

Kieserite Classification

Dana Class:

29.06.02.01 (29)Hydrated Acid and Sulfates

(29.06)where A XO4 · x(H2O)

(29.06.02)Kieserite Group (Mono-hydrates)

29.06.02.01 Kieserite MgSO4•(H2O) C 2/c 2/m

29.06.02.02 Szomolnokite FeSO4•(H2O) A2/a 2/m

29.06.02.03 Szmikite MnSO4•(H2O) A2/a 2/m

29.06.02.04 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1

29.06.02.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m

29.06.02.06 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m

29.06.02.07 Cobaltkieserite! CoSO4•H2O C 2/c 2/m

Strunz Class:

07.CB.05 07 - SULFATES (SELENATES, TELLURATES)

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

07.CB -With only medium-sized cations

07.CB.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m

07.CB.05 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m

07.CB.05 Kieserite MgSO4•(H2O) C 2/c 2/m

07.CB.05 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1

07.CB.05 Szomolnokite FeSO4•(H2O) A2/a 2/m

07.CB.05 Szmikite MnSO4•(H2O) A2/a 2/m

07.CB.05 Cobaltkieserite! CoSO4•H2O C 2/c 2/m

Other Kieserite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Kieserite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Kieserite

MgSO4•(H2O)
Dana No: 29.06.02.01 Strunz No: 07.CB.05
Locality:

Notes: