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Carlfriesite

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Formula:
CaTe24+Te6+O8
System:
Monoclinic
Colour:
Yellow
Hardness:
Name:
For Carl Fries Jr. (1910-1965), USGS.
This page provides mineralogical data about Carlfriesite.

Classification of Carlfriesite

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
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Type Occurrence of Carlfriesite

Place of Conservation of Type Material:
Harvard University 119080
Year of Discovery:
1975
Geological Setting of Type Material:
Cavities in oxidized hydrothermal Au-Te deposit.

Physical Properties of Carlfriesite

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

Crystallography of Carlfriesite

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 Volume:
V 641.98 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Axe head shaped crystals, radial sprays, botyroidal crusts.

Optical Data of Carlfriesite

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 Carlfriesite

Formula:
CaTe24+Te6+O8
Essential elements:
All elements listed in formula:
Empirical Formula:
CaTe24+Te6+O8

Relationship of Carlfriesite to other Species

4.JK.05WinstanleyiteTiTe34+O8
4.JK.05Walfordite(Fe3+,Te6+)Te34+O8
4.JK.10Spiroffite(Mn,Zn)2Te34+O8
4.JK.10ZincospiroffiteZn2Te34+O8
4.JK.15BalyakiniteCu(TeO3)
4.JK.20RajiteCu(Te24+O5)
4.JK.30Denningite(Mn2+,Ca,Zn)Te24+O5
4.JK.35ChekhovichiteBi2Te44+O11
4.JK.40SmirniteBi2Te4+O5
4.JK.45Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
4.JK.50FairbankitePb(TeO3)
4.JK.55PlumbotelluritePb(TeO3)
4.JK.60Magnolite(Hg2+)(Te4+O3)
4.JK.65MoctezumitePb(UO2)(TeO3)2
4.JK.70Schmitterite(UO2)(TeO3)
4.JK.75Cliffordite(UO2)Te34+O7
28.4.1XocomecatliteCu3(TeO4)(OH)4
28.4.3YafsoaniteCa3Zn3(TeO6)2
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2O
28.4.6SchieffelinitePb8(TeO4)5(SO4)3 · 8H2O
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)
28.4.8KhinitePb2+Cu32+[Te6+O6](OH)2
28.4.9Khinite-3TPb2+Cu32+Te6+O6(OH)2
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)
28.4.11KuksitePb3Zn3(PO4)2(TeO6)
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)
28.4.13TlapalliteH6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4)
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.15KuranakhitePbMn4+Te6+O6
28.4.16CuzticiteFe23+(TeO6) · 3H2O
28.4.17YecoraiteFe33+Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

Other Names for Carlfriesite

Name in Other Languages:

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 Carlfriesite

Reference List:
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.

Mineralogical Magazine: 40: 127-130.

Internet Links for Carlfriesite

Localities for Carlfriesite

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