Schoenfliesite Mineral Data
General Schoenfliesite Information
Chemical Formula:
MgSn++++(OH)6
Composition:
Molecular Weight = 245.06 gm
Magnesium 9.92 % Mg 16.45 % MgO
Tin 48.44 % Sn 61.50 % SnO2
Hydrogen 2.47 % H 22.05 % H2 O
Oxygen 39.17 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
MgSn(OH)6
Environment:
Secondary mineral in oxidized tin-bearing materials.
IMA Status:
Approved IMA 1971
Locality:
Brooks Mountain, Seward Peninsula, Alaska. Link to MinDat.org Location Data.
Name Origin:
Named for Arthur Moritz Schoenflies (1853-1928), professor of mathematics, University of Frankfurt.
Name Pronunciation:
Schoenfliesite + Pronunciation
Synonym:
ICSD 25824
PDF 27-Sep
Schoenfliesite Image
Images:
Schoenfliesite
Comments: Yellow-brown schoenfliesite on matrix.
Location: Zlaty Kopec, Jáchymov (St Joachimsthal), Krusné Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic.
Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag
Schoenfliesite Crystallography
Cell Dimensions:
a = 7.759, Z = 4; V = 467.11 Den(Calc)= 3.48
Crystal System:
Isometric - Diploidal H-M Symbol (2/m 3 ) Space Group: P n3
X Ray Diffraction:
By Intensity(I/Io ): 3.88(1), 4.48(0.5), 2.74(0.25),
Physical Properties of Schoenfliesite
Cleavage:
None
Color:
Reddish brown.
Density:
3.483
Diaphaneity:
Transparent
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
4-4.5 - Between Fluorite and Apatite
Luster:
Vitreous (Glassy)
Optical Properties of Schoenfliesite
Gladstone-Dale:
CI meas = 0.135 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = 0.134 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1695,KPDmeas = 0.1694,KC = 0.1958 Ncalc = 1.68
Optical Data:
Isotropic, n=1.59.
Calculated Properties of Schoenfliesite
Electron Density:
Bulk Density (Electron Density)=3.29 gm/cc note: Specific Gravity of Schoenfliesite =3.48 gm/cc.
Fermion Index:
Fermion Index = 0.09 Boson Index = 0.91
Photoelectric:
PESchoenfliesite = 141.23 barns/electronU=PESchoenfliesite x r Electron Density= 465.29 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Schoenfliesite is Not Radioactive
Schoenfliesite Classification
Dana Class:
06.03.06.02 (06) Hydroxides and Oxides Containing Hydroxyl
(06.03) with (OH)3 or (OH)6 groups
(06.03.06) Wickmanite group (Cubic or Trigonal, 2+ cations containing Sn)
06.03.06.01 Wickmanite MnSn(OH)6 P n3m 4/m 3 2/m
06.03.06.02 Schoenfliesite MgSn(OH)6 P n3 2/m 3
06.03.06.03 Natanite FeSn(OH)6 P n3m 4/m 3 2/m
06.03.06.04 Vismirnovite ZnSn(OH)6 P n3m 4/m 3 2/m
06.03.06.05 Burtite CaSn(OH)6 R 3 3
06.03.06.06 Mushistonite (Cu,Zn,Fe)Sn(OH)6 P n3m 4/m 3 2/m
Strunz Class:
04.FC.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
04.F - Hydroxides (without V or U)
04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra
04.FC.10 Burtite CaSn(OH)6 R 3 3
04.FC.10 Mushistonite (Cu,Zn,Fe)Sn(OH)6 P n3m 4/m 3 2/m
04.FC.10 Natanite FeSn(OH)6 P n3m 4/m 3 2/m
04.FC.10 Vismirnovite ZnSn(OH)6 P n3m 4/m 3 2/m
04.FC.10 Schoenfliesite MgSn(OH)6 P n3 2/m 3
04.FC.10 Wickmanite MnSn(OH)6 P n3m 4/m 3 2/m
Other Schoenfliesite 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 Schoenfliesite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Schoenfliesite Specimen Label here :
Schoenfliesite
MgSn++++(OH)6
Dana No: 06.03.06.02 Strunz No: 04.FC.10
Locality:
Notes:
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