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About OboyeriteHide

Oliver M. Boyer
Milk white
Specific Gravity:
Crystal System:
Named in 1979 by S.A. Williams in honor of Oliver Michael Boyer (15 November 1842, New Hope, Ohio, USA - 14 September 1918, Medford, Oklahoma, USA), prospector. In 1878 he discovered several rich veins of silver in mines near Tombstone. After killing a man, he was sentenced to death but in 1883 he was released on the condition that he leave Arizona. He then took up a life of farming.
A Mixture Of:
First described as a new mineral in 1979 and discredited by CNMNC-IMA in 2019.

Typematerial consist of at least two distinct phases, ottoite and plumbotellurite.

Approval Year:
First Published:
Approval History:
1979: Approved as IMA 1979-009
2019: Discredited by CNMNC-IMA (proposal 19-D).

Classification of OboyeriteHide


4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)

8 : Compound Selenites, Tellurites and Sulfites

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

Physical Properties of OboyeriteHide

Milk white
1½ on Mohs scale
6.4(6) g/cm3 (Measured)    6.66 g/cm3 (Calculated)

Optical Data of OboyeriteHide

RI values:
nα = 2.240 nγ = 2.260
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
relatively strong
Optical Extinction:
Maximum at 37 degrees to elongation.

Crystallography of OboyeriteHide

Crystal System:
Cell Parameters:
a = 12.249(8) Å, b = 15.113(6) Å, c = 6.868(3) Å
α = 116.45(4)°, β = 98.58(4)°, γ = 85.82(4)°
a:b:c = 0.81 : 1 : 0.454
Unit Cell V:
1,125.54 ų (Calculated from Unit Cell)
Tiny spherules

First Recorded Occurrence of OboyeriteHide

Place of Conservation of First Recorded Material:
Smithsonian Museum, Washington DC 162210
Geological Setting of First Recorded Material:
Mine dump.

Synonyms of OboyeriteHide

Other Language Names for OboyeriteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Oboyerite associated with JarositeKFe3+3(SO4)2(OH)6
1 photo of Oboyerite associated with ChlorargyriteAgCl
1 photo of Oboyerite associated with CerussitePbCO3

Related Minerals - Nickel-Strunz GroupingHide

4..Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6ZIso. m3m (4/m 3 2/m) : Fd3m
4..ParabariomicroliteBaTa4O10(OH)2 · 2H2OTrig.
4..Yttrobetafite (of Hogarth 1977)A2-mD2X6-wZ1-n
4..UM1999-32-SiOSiO2Orth. mmm (2/m 2/m 2/m) : Pbcn

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.4.2CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
28.4.3YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
28.4.6SchieffelinitePb10Te6+6O20(OH)14(SO4)(H2O)5Orth. mmm (2/m 2/m 2/m) : Cmcm
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)Mon. m
28.4.8KhinitePb2+Cu2+3[Te6+O6](OH)2Orth. mm2 : Fdd2
28.4.9Khinite-3TPb2+Cu2+3Te6+O6(OH)2Trig. 3 : P32
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.11KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.13Tlapallite(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2OTrig. 3 2 : P3 2 1
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.16CuzticiteFe3+2(TeO6) · 3H2OHex.
28.4.17YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

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 OboyeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Williams, S.A. (1979) Girdite, oboyerite, fairbankite, and winstanleyite, four new tellurium minerals from Tombstone, AZ. Mineralogical Magazine: 43: 453-457.
Fleischer, M., Cabri, L.J., Chao, G.Y., Pabst, A. (1980) New mineral names. American Mineralogist: 65: 808-814.
Roberts, A.C. (1980) A triclinic unit cell for oboyerite. Geological Survey of Canada Paper 80-1B: 295-295.
Fleischer, M., Chao, G.Y., Francis, C.A., Pabst, A. (1981) New mineral names. American Mineralogist: 66: 217-220.
CNMNC Newsletter No. 51; European Journal of Mineralogy, 31, https://doi.org/10.1127/ejm/2019/0031-2894

Internet Links for OboyeriteHide

Localities for OboyeriteHide

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.
  • Arizona
    • Cochise County
      • Contention-Grand Central Mine group
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 218, 315; Williams, S.A. (1979), Girdite, oboyerite, fairbankite, and winstanleyite, four new tellurium minerals from Tombstone, AZ, Mineralogical Magazine: 43: 453-457.
In the collection of Brent Thorne
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 307.
      • Tombstone Mining District
        • Tombstone
Rolf Luetcke
Mineral and/or Locality  
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