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Stottite

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Formula:
Fe2+Ge4+(OH)6
System:
Tetragonal
Colour:
Brown
Lustre:
Greasy
Hardness:
Name:
Named after Charles E. Stott, Director of the Tsumcor Mine, Tsumeb (Namibia).
Stottite is an iron hexahydroxogermanate, a compound with a Ge(IV) complex anion. Compare 'UM1970-16-OH:GeMn' - an unnamed natural Mn-bearing hexahydroxogermanate.


Classification of Stottite

Approved, 'Grandfathered' (first described prior to 1959)
4.FC.15

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
6.3.7.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.11.16

7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb

Physical Properties of Stottite

Greasy
Colour:
Brown
Hardness (Mohs):

Optical Data of Stottite

Type:
Uniaxial (-)
RI values:
nω = 1.738 nε = 1.728
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of Stottite

IMA Formula:
Fe2+Ge4+(OH)6
Elements listed in formula:

Crystallography of Stottite

Crystal System:
Tetragonal
Cell Parameters:
a = 7.55 Å, c = 7.47 Å
Ratio:
a:c = 1 : 0.989
Unit Cell Volume:
V 425.81 ų (Calculated from Unit Cell)

Type Occurrence of Stottite

Relationship of Stottite to other Species

Other Members of Group:
MopungiteNa[Sb5+(OH)6]
TetrawickmaniteMn2+[Sn4+(OH)6]
4.FC.05BernaliteFe(OH)3
4.FC.05DzhalinditeIn(OH)3
4.FC.05SöhngeiteGa(OH)3
4.FC.10BurtiteCaSn4+(OH)6
4.FC.10MushistoniteCu2+Sn4+(OH)6
4.FC.10NataniteFe2+Sn4+(OH)6
4.FC.10SchoenfliesiteMgSn(OH)6
4.FC.10VismirnoviteZnSn(OH)6
4.FC.10WickmaniteMn2+Sn4+(OH)6
4.FC.15Jeanbandyite(Fe3+,Mn2+)Sn4+(OH,O)6
4.FC.15MopungiteNaSb5+(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-2N1S(Zn,Al,Mg)2(Al,Sn)6O11(OH)
4.FC.20Zinconigerite-6N6S(Zn,Mg,Al)3(Al,Sn,Fe)8O15(OH)
4.FC.25Magnesiotaaffeite-6N’3SMg2BeAl6O12
4.FC.25Magnesiotaaffeite-2N’2SMg3BeAl8O16
7.11.1RomarchiteSnO
7.11.2CassiteriteSnO2
7.11.4SchoenfliesiteMgSn(OH)6
7.11.5BurtiteCaSn4+(OH)6
7.11.6VismirnoviteZnSn(OH)6
7.11.7WickmaniteMn2+Sn4+(OH)6
7.11.8TetrawickmaniteMn2+Sn4+(OH)6
7.11.9Jeanbandyite(Fe3+,Mn2+)Sn4+(OH,O)6
7.11.10NataniteFe2+Sn4+(OH)6
7.11.11MushistoniteCu2+Sn4+(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
7.11.17CarboiriteFe2+Al2GeO5(OH)2
7.11.18OtjisumeitePbGe4O9
7.11.19BartelkeitePbFeGe(Ge2O7)(OH)2 · H2O
7.11.20MassicotPbO
7.11.21LithargePbO
7.11.22MiniumPb22+Pb4+O4
7.11.23PlattneritePbO2
7.11.24ScrutinyitePbO2
7.11.25MurdochiteCu12Pb2O15Cl2
7.11.26MacedonitePbTiO3
7.11.27CesàrolitePbMn34+O6(OH)2
7.11.28CoronaditePb(Mn64+Mn23+)O16
7.11.29QuenselitePbMn3+O2(OH)
7.11.30PlumboferritePb2(Fe3+,Mn2+,Mg)11O19
7.11.31MagnetoplumbitePbFe123+O19
7.11.32SenaitePb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38

Other Names for Stottite

Name in Other Languages:
German:Stottit
Simplified Chinese:羟锗铁矿
Spanish:Stottita

Other Information

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 Stottite

Reference List:
Neues Jahrbuch für Mineralogie, Monatshefte (1958): 85-96.

American Mineralogist (1958): 43: 1006.

American Mineralogist (1988): 73: 657-661.

Acta Crystallographica: 14: 205-208.

Internet Links for Stottite

mindat.org URL:
https://www.mindat.org/min-3795.html
Please feel free to link to this page.

Localities for Stottite

This 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.
Namibia (TL)
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Neues Jahrb.Min.,Mh.(1958) 85-96
Mineral and/or Locality  
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