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Carlfriesite

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About CarlfriesiteHide

Formula:
CaTe4+2Te6+O8
Colour:
Yellow
Hardness:
Specific Gravity:
6.3
Crystal System:
Monoclinic
Name:
For Carl Fries Jr. (1910 - July 11, 1965), USGS.
Second mixed-valence tellurate mineral after tlapallite.


Classification of CarlfriesiteHide

Approved
4.JK.25

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
34.5.3.1

34 : SELENITES, TELLURITES AND SULFITES
5 : A(X3O8)
28.4.2

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

Physical Properties of CarlfriesiteHide

Transparency:
Transparent
Colour:
Yellow
Streak:
Very pale yellow
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Fair on {010}
Density:
6.3 g/cm3 (Measured)    5.7 g/cm3 (Calculated)

Optical Data of CarlfriesiteHide

Type:
Biaxial (-)
RI values:
nα = 1.982 nβ = 2.095 nγ = 2.190
2V:
Measured: 80° , Calculated: 79°
Max Birefringence:
δ = 0.208
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong
Pleochroism:
Weak
Comments:
In yellows

Chemical Properties of CarlfriesiteHide

Formula:
CaTe4+2Te6+O8
IMA Formula:
CaTe6+(Te4+)2O8

Crystallography of CarlfriesiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 12.576(2) Å, b = 5.662(3) Å, c = 9.994(2) Å
β = 115.56(3)°
Ratio:
a:b:c = 2.221 : 1 : 1.765
Unit Cell V:
641.98 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Axe head shaped crystals, radial sprays, botyroidal crusts.

Type Occurrence of CarlfriesiteHide

Place of Conservation of Type Material:
Harvard University 119080
Geological Setting of Type Material:
Cavities in oxidized hydrothermal Au-Te deposit.

Synonyms of CarlfriesiteHide

Other Language Names for CarlfriesiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tlapallite1 photo of Carlfriesite associated with Tlapallite on mindat.org.

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.10SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
4.JK.10ZincospiroffiteZn2Te4+3O8Mon. 2/m
4.JK.15BalyakiniteCu(TeO3)Orth.
4.JK.20RajiteCu(Te4+2O5)Mon. 2/m : P21/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.50FairbankitePb(TeO3)Tric.
4.JK.55PlumbotelluritePb(TeO3)Orth.
4.JK.60Magnolite(Hg+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

28.4.1XocomecatliteCu3(TeO4)(OH)4Orth.
28.4.3YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2OTric.
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
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
28.4.13Tlapallite(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2O
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.15KuranakhitePbMn4+Te6+O6Orth.
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 CarlfriesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist: 61: 1053.
Effenberger, H., Zemann, J., and Mayer, H. (1978): Carlfriesite: crystal structure, revision of chemical formula, and synthesis. American Mineralogist 63, 847-852.
Williams, S.A. and R.V. Gaines (1975) Carlfriesite, H4Ca(TeO3)3, a new mineral from Moctezuma, Sonora, Mexico. Mineral. Mag., 40, 127–130.
Missen, O.P., Kampf, A.R., Mills, S.J., Housley, R.M., Spratt, J., Welch, M.D., Coolbaugh, M.F., Marty, J., Chorazewicz, M., Ferraris, C. (2019): The crystal structures of the mixed-valence tellurium oxysalts tlapallite, (Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2O, and carlfriesite, CaTe4+2Te6+O8. Mineralogical Magazine: 83 (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=15214

Internet Links for CarlfriesiteHide

Localities for CarlfriesiteHide

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.
Mexico
 
  • Sonora
    • Mun. de Moctezuma
      • La Verde District
        • Cumobabi
Panczner (1987): 136, 269, 292.
      • Moctezuma
Mineralogical Magazine(1975) 40, 127-130; Lapis 2001(1), 11-40
Panczner(1987):108-401.
Mineral and/or Locality  
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