Sanderite Mineral Data

General Sanderite Information

Chemical Formula:

MgSO4•2(H2O)

Composition:

Molecular Weight = 156.40 gm

Magnesium 15.54 % Mg 25.77 % MgO

Hydrogen 2.58 % H 23.04 % H₂O

Sulfur 20.50 % S 51.19 % SO₃

Oxygen 61.38 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(SO₄)•2(H₂O)

Environment:

Structure analyzed from synthetic material.

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

Efflorescences on kieserite at the Hansa I shaft, Empelde, and the Niedersachsen shaft, near Wathlingen, Austria. Link to MinDat.org Location Data.

Name Origin:

Named for Bruno Sander (1884-1979), Austrian geologist, Alte Universitat, Innsbruck, Austria.

Name Pronunciation:

Sanderite + Pronunciation

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Sanderite Crystallography

Axial Ratios:

a:b:c =1.0477:1:1.4655

Cell Dimensions:

a = 8.8932, b = 8.4881, c = 12.4401, Z = 8; V = 939.06 Den(Calc)= 2.21

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

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

By Intensity(I/I_o): 3.1(1), 4.25(0.9), 4.42(0.8),

Physical Properties of Sanderite

Color:

White.

Density:

2.37

Diaphaneity:

Transparent

Habit:

Efflorescences - Crystals covering matrix, generally produced from transpiro-evaporation.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Sanderite

Optical Data:

Biaxial (?)

NCalc= 1.49 - from Gladstone-Dale relationship (KC = 0.2205) where Ncalc=Dcalc*KC+1
NCalc= 1.52 - from Gladstone-Dale relationship (KC = 0.2205) where Ncalc=Dmeas*KC+1

Calculated Properties of Sanderite

Electron Density:

Bulk Density (Electron Density)=2.26 gm/cc
note: Specific Gravity of Sanderite =2.21 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Sanderite= 1.64 barns/electron
U=PE_Sanderite x rElectron Density= 3.70 barns/cc.

Radioactivity:

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

Sanderite Classification

Dana Class:

29.06.04.01 (29)Hydrated Acid and Sulfates

(29.06)where A XO4 · x(H2O)

(29.06.04)Dana Group

29.06.04.01 Sanderite MgSO4•2(H2O) P 2₁2₁2₁ 2 2 2

Strunz Class:

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

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

07.CB -With only medium-sized cations

07.CB.07 Sanderite MgSO4•2(H2O) P 2₁2₁2₁ 2 2 2

Other Sanderite Information

References:

PHYS. PROP.(Dana8, AmMin, v94:622)

See Also:

Links to other databases for Sanderite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Sanderite

MgSO4•2(H2O)
Dana No: 29.06.04.01 Strunz No: 07.CB.07
Locality:

Notes: