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Schoenfliesite

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Arthur Moritz Schoenflies
Formula:
Mg[Sn(OH)6]
System:
Isometric
Colour:
Dark red-brown, yellow, ...
Hardness:
4 - 4½
Name:
Named in 1971 by George T. Faust and Waldemar T. Schaller in honor of Arthur Moritz Schoenflies ( 17 April 1853 – 27 May 1928) Professor of Mathematics, University of Frankfurt. Schoenflies' researches in group theory and topology resulted in his proof of the 230 space groups. His crystallographic indexing techniques also greatly facilitated the solving of mineral and chemical crystal structures.

Classification of Schoenfliesite

Approved
Approval Year:
1968
4.FC.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
C : Hydroxides with OH, without H2O; corner-sharing octahedra
6.3.6.2

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.11.4

7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
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Type Occurrence of Schoenfliesite

Geological Setting of Type Material:
Hydrothermal alteration of boron-enriched contact metamorphosed limestone
Associated Minerals at Type Locality:

Occurrences of Schoenfliesite

Geological Setting:
Serpentinized dolostone in contact with B-Be-Sr-W skarn

Physical Properties of Schoenfliesite

Resinous, Waxy, Greasy, Dull
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Dark red-brown, yellow, orange, greenish yellow
Streak:
Nearly white, lighter than massive mineral
Hardness (Mohs):
4 - 4½
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.32 g/cm3 (Measured)    3.483 g/cm3 (Calculated)

Crystallography of Schoenfliesite

Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Pn3
Space Group Setting:
Pn3
Cell Parameters:
a = 7.759(6) Å
Unit Cell Volume:
V 467.11 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Octahedral, usually massive
Comment:
Data for synthetic material
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.48 (40)
3.87 (100)
2.74 (35)
2.44 (6)
2.33 (20)
2.24 (10)
2.07 (2)
1.938 (16)
1.778 (20)
1.733 (16)
1.584 (20)
1.493 (20)
1.371 (10)
1.328 (2)
1.311 (10)
1.293 (10)
1.226 (10)
1.181 (2)
1.169 (10)
1.119 (2)
1.088 (2)
1.075 (2)
1.028 (6)
1.010 (2)
0.9405 (6)
0.9143 (6)
0.8964 (2)
0.8896 (2)
0.8681 (2)
0.8525 (2)
0.8465 (2)
0.8277 (2)
0.8138 (2)
0.7927 (2)
0.7811 (2)
Comments:
9-27 (synthetic); natural material frequently yeild few d values. ICDD 13-355 replaced by these values.

Optical Data of Schoenfliesite

Type:
Isotropic
RI values:
n = 1.667
Birefringence:
0.0
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemical Properties of Schoenfliesite

Formula:
Mg[Sn(OH)6]
All elements listed in formula:

Relationship of Schoenfliesite to other Species

Other Members of Group:
BurtiteCa[Sn(OH)6]
Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]
NataniteFe2+[Sn(OH)6]
VismirnoviteZn[Sn(OH)6]
WickmaniteMn2+[Sn(OH)6]
4.FC.05BernaliteFe(OH)3 · nH2O (n = 0.0 to 0.25)
4.FC.05DzhalinditeIn(OH)3
4.FC.05SöhngeiteGa(OH)3
4.FC.10BurtiteCa[Sn(OH)6]
4.FC.10Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]
4.FC.10NataniteFe2+[Sn(OH)6]
4.FC.10VismirnoviteZn[Sn(OH)6]
4.FC.10WickmaniteMn2+[Sn(OH)6]
4.FC.15JeanbandyiteFe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)
4.FC.15MopungiteNa[Sb5+(OH)6]
4.FC.15StottiteFe2+[Ge4+(OH)6]
4.FC.15TetrawickmaniteMn2+[Sn4+(OH)6]
4.FC.20Ferronigerite-2N1S(Al,Fe,Zn)2(Al,Sn)6O11(OH)
4.FC.20Magnesionigerite-6N6S(Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH)
4.FC.20Magnesionigerite-2N1S(Mg,Al,Zn)2(Al,Sn)6O11(OH)
4.FC.20Ferronigerite-6N6S(Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH)
4.FC.20Zinconigerite-2N1SSn(Zn,Fe,Mg)Al6O11(OH)
4.FC.20Zinconigerite-6N6S(Zn,Mg,Al)3(Al,Sn,Fe)8O15(OH)
4.FC.25Magnesiotaaffeite-6N’3SMg2BeAl6O12
4.FC.25Magnesiotaaffeite-2N’2SMg3Al8BeO16
7.11.1RomarchiteSnO
7.11.2CassiteriteSnO2
7.11.5BurtiteCa[Sn(OH)6]
7.11.6VismirnoviteZn[Sn(OH)6]
7.11.7WickmaniteMn2+[Sn(OH)6]
7.11.8TetrawickmaniteMn2+[Sn4+(OH)6]
7.11.9JeanbandyiteFe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)
7.11.10NataniteFe2+[Sn(OH)6]
7.11.11Mushistonite(Cu,Zn,Fe2+)[Sn(OH)6]
7.11.12Ferronigerite-2N1S(Al,Fe,Zn)2(Al,Sn)6O11(OH)
7.11.13Magnesionigerite
7.11.14ArgutiteGeO2
7.11.15BrunogeieriteFe22+Ge4+O4
7.11.16StottiteFe2+[Ge4+(OH)6]
7.11.17CarboiriteFeAl2(GeO4)O(OH)2
7.11.18OtjisumeitePbGe4O9
7.11.19BartelkeitePb(Fe2+Ge)[Ge2O7](OH)2 · H2O
7.11.20MassicotPbO
7.11.21LithargePbO
7.11.22MiniumPb3O4
7.11.23PlattneritePbO2
7.11.24Scrutinyiteα-PbO2
7.11.25MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
7.11.26MacedonitePbTiO3
7.11.27CesàrolitePb(Mn4+)3O6(OH)2
7.11.28CoronaditePb(Mn64+Mn23+)O16
7.11.29QuenselitePbMnO2(OH)
7.11.30PlumboferritePb2(Fe3+,Mn2+,Mg)11O19
7.11.31Magnetoplumbite(Pb,Mn)(Fe,Mn)12O19
7.11.32SenaitePb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38

Other Names for Schoenfliesite

Name in Other Languages:

Other Information

Not fluorescent in UV
Other Information:
The mineral is soluble in HCl and slowly soluble in
NaOH
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Schoenfliesite

Reference List:
Faust G T, Schaller W T (1971) Schoenfliesite, MgSn(OH)6. Zeitschrift für Kristallographie 134, 116-141

American Mineralogist (1972): 57: 1557.

Acta Crystallographica: 13: 601-603.

Canadian Mineralogist (1977) 15: 437.

Internet Links for Schoenfliesite

Localities for Schoenfliesite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Bolivia
 
  • Potosí Department
    • Chayanta Province
Joy Desor EDS analysis
China
 
  • Yunnan Province
    • Honghe Autonomous Prefecture
      • Gejiu Co.
        • Gejiu Sn-polymetallic ore field
Chen, J., Halls, C., and Stanley, C.J. (1992): Chinese Journal of Geochemistry 11(2), 140-155.
Chengdian Pen (1986): Mineral Deposits 5(3), 37-48
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Natural History Museum Vienna collection
Malaysia
 
  • Pahang
http://rruff.geo.arizona.edu/doclib/hom/schoenfliesite.pdf.; Hassan, W. & Faud, W. (1993): Mineral of the schoenfliesite - wickmanite series from Sungai Gow, Pahang; a preliminary finding. Wana Geologi, Newsletter of the Geologiral Society of Malaysia 19(6), 239-245
Russia
 
  • Northern Region
    • Karelia Republic
      • Ladoga Region
        • Pitkyaranta District (Pitkäranta District)
Canadian Mineralogist 15, 437(1977); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Turkey
 
  • Mediterranean Region
    • Antalya Province
      • Kaş
Basciano L C , Peterson R C , Roeder P L , (1998) Description of schoenfliesite, MgSn(OH)6, and roxbyite, Cu1.72S, from a 1375 BC shipwreck, and rietveld neutron-diffraction refinement of synthetic schoenfliesite, wickmanite, MnSn(OH)6, and burtite, CaSn(OH)6, The Canadian Mineralogist , 36:1203-1210
USA (TL)
 
  • Alaska
    • Nome Borough
      • Seward Peninsula
Faust G T, Schaller W T (1971) Schoenfliesite, MgSn(OH)6. Zeitschrift für Kristallographie 134, 116-141
Mineral and/or Locality  
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