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Spiroffite

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About SpiroffiteHide

Formula:
Mn2+2Te4+3O8
Colour:
Purplish red to pink
Lustre:
Adamantine
Hardness:
Specific Gravity:
5.01
Crystal System:
Monoclinic
Name:
Named in honor of Kiril Spiroff (21 Apr 1901, Bulgaria - March 1981, Tucson, Arizona, USA), mineralogist, Michigan College of Mining and Technology, Houghton, Michigan, USA and curator of the A.E. Seaman Mineral Museum.
This page provides mineralogical data about Spiroffite.


Classification of SpiroffiteHide

Approved
4.JK.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
34.5.1.1

34 : SELENITES, TELLURITES AND SULFITES
5 : A(X3O8)
28.3.11

28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites

Physical Properties of SpiroffiteHide

Adamantine
Transparency:
Transparent, Translucent
Colour:
Purplish red to pink
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Imperfect/Fair
Noted in two directions.
Fracture:
Conchoidal
Density:
5.01(2) g/cm3 (Measured)    5.059 g/cm3 (Calculated)

Optical Data of SpiroffiteHide

Type:
Biaxial (+)
RI values:
nα = 1.850(1) nβ = 1.910(1) nγ = 2.200
2V:
Measured: 55°
Max Birefringence:
δ = 0.350
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct

Chemical Properties of SpiroffiteHide

Formula:
Mn2+2Te4+3O8

Crystallography of SpiroffiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 12.87(2) Å, b = 5.3813(5) Å, c = 11.888(2) Å
β = 98.22(1)°
Ratio:
a:b:c = 2.392 : 1 : 2.209
Unit Cell V:
814.87 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Anhedral crystals to 1cm.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005504SpiroffiteCooper M A, Hawthorne F C (1996) The crystal structure of spiroffite The Canadian Mineralogist 34 821-8261996Moctezuma, Sonora, Mexico0293
CIF Raw Data - click here to close

Geological EnvironmentHide

Geological Setting:
Oxidation zone of Au-Te deposits.

Type Occurrence of SpiroffiteHide

Place of Conservation of Type Material:
Harvard University, Boston Massachusetts 108109

Other Language Names for SpiroffiteHide

German:Spiroffit
Simplified Chinese:碲锰锌石
Spanish:Spiroffita
Traditional Chinese:碲錳鋅石

Relationship of Spiroffite to other SpeciesHide

Other Members of this group:
ZincospiroffiteZn2Te4+3O8Mon. 2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
11 photos of Spiroffite associated with TelluriteTeO2
3 photos of Spiroffite associated with QuartzSiO2
2 photos of Spiroffite associated with CalciteCaCO3
2 photos of Spiroffite associated with TelluriumTe
1 photo of Spiroffite associated with ParatelluriteTeO2

Related Minerals - Nickel-Strunz GroupingHide

4.JK.05WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.05Walfordite(Fe3+,Te6+)Te4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.10ZincospiroffiteZn2Te4+3O8Mon. 2/m
4.JK.15BalyakiniteCu(TeO3)Orth.
4.JK.20RajiteCu(Te4+2O5)Mon. 2/m : P21/b
4.JK.25CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
4.JK.30Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
4.JK.35ChekhovichiteBi2Te4+4O11Mon. 2/m
4.JK.40SmirniteBi2Te4+O5Orth. mm2
4.JK.45Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6ClIso. 4 3 2 : P41 3 2
4.JK.50FairbankitePb2+12(Te4+O3)11(SO4)Tric.
4.JK.55PlumbotelluritePb(TeO3)Orth.
4.JK.60Magnolite[Hg2]2+[Te4+O3]Orth. mm2
4.JK.65MoctezumitePb(UO2)(TeO3)2Mon.
4.JK.70Schmitterite(UO2)(TeO3)Orth.
4.JK.75Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.3.1BalyakiniteCu(TeO3)Orth.
28.3.2RajiteCu(Te4+2O5)Mon. 2/m : P21/b
28.3.3GraemiteCu[TeO3] · H2OOrth. mmm (2/m 2/m 2/m) : Pmma
28.3.4TeineiteCu2+(Te4+O3) · 2H2OOrth. mmm (2/m 2/m 2/m)
28.3.5CesbroniteCu2+3Te6+O4(OH)4Orth. mmm (2/m 2/m 2/m) : Cmcm
28.3.6MroseiteCaTe4+(CO3)O2Orth. mmm (2/m 2/m 2/m) : Pbca
28.3.7QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2yTrig. 3m (3 2/m) : P3m1
28.3.8ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.9KinichiliteMg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.10Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
28.3.12WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
28.3.13FairbankitePb2+12(Te4+O3)11(SO4)Tric.
28.3.14PlumbotelluritePb(TeO3)Orth.
28.3.15Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6ClIso. 4 3 2 : P41 3 2
28.3.16SmirniteBi2Te4+O5Orth. mm2
28.3.17ChekhovichiteBi2Te4+4O11Mon. 2/m
28.3.18Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3
28.3.19Schmitterite(UO2)(TeO3)Orth.
28.3.20MoctezumitePb(UO2)(TeO3)2Mon.
28.3.21EmmonsiteFe3+2(TeO3)3 · 2H2OTric. 1 : P1
28.3.22BlakeiteFe3+2[TeO3]3 (?)
28.3.23MackayiteFe3+(Te4+2O5)(OH)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
28.3.24PoughiteFe3+2(TeO3)2(SO4)(H2O)2 · H2OOrth.
28.3.25SonoraiteFe3+(TeO3)(OH) · H2OMon.
28.3.26RodalquilariteFe2(TeO2OH)3(TeO3)ClTric. 1 : P1
28.3.27EztlitePb2+2Fe3+3(Te4+ O3)3(SO4)O2ClMon. m : Bm
28.3.28KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2OHex.

Other InformationHide

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 SpiroffiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mandarino, J.A. (1962) Spiroffite, a new tellurite mineral from Mexico. American Mineralogist: 47: 196-196.
Mandarino, J.A., Williams, S.J., Mitchell, R.S. (1963) Spiroffite, a new tellurite mineral from Moctezuma, Sonora, Mexico. Mineralogical Society of America Special Paper 1: 305-309.
Fleischer, M. (1964) New mineral names. American Mineralogist: 49: 439-448.
International Mineralogical Association (1967) Commission on new minerals and mineral names. Mineralogical Magazine: 36: 131-136.
Cooper, M.A., Hawthorne, F.C. (1996) The crystal structure of spiroffite. The Canadian Mineralogist: 34: 821-826.

Internet Links for SpiroffiteHide

Localities for SpiroffiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Japan
 
  • Shizuoka Prefecture
    • Shimoda City
      • Rendaiji
Sakurai & Kato (1965) Kobutsugaku Zasshi (Journal of the Mineralogical Society of Japan) 7, 348-350; Rocks & Min.: 62:167
Mexico
 
  • Sonora
    • Moctezuma Municipality
      • Moctezuma
Collected by Joe Ruiz and analyzed by XRD.
Mandarino, J.A. (1962) Spiroffite, a new tellurite mineral from Mexico. American Mineralogist, 47, 196-196.; Braith, H., Gröbner, J., Langer, G., and Seitz, M. (2001) Moctezumas geheime Schätze: Bambolla, Bambollita und San Miguel. Lapis: 26(1): 11-23.; Rewitzer, C. (2001) Bambollita, Bambolla, San Miguel und Candelaria: Untertagefunde und Typmineralien. Lapis: 26(1): 24-40.
USA
 
  • Arizona
    • Cochise County
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 379.
  • Nevada
    • Lincoln Co.
      • Delamar Mining District
Hayes, S. M., & Ramos, N. A. (2019) Surficial geochemistry and bioaccessibility of tellurium in semiarid mine tailings. Environmental Chemistry
 
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