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Frankhawthorneite

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Formula:
Cu
 
2
Te
6+
 
O
 
4
(OH)
 
2
System:MonoclinicLustre:Vitreous
Hardness:3 - 3½
Name:
Named in honour of Frank Christopher Hawthorne (b. 1946), Professor of Mineralogy, University of Manitoba, Winnipeg, Manitoba, for his significant contributions to the science of structural and experimental mineralogy and crystallography, especially the crystal chemistry of the amphibole group and oxysalt minerals. Hawthorne has been the author or coauthor of more papers in mineralogy and crystallography than any other scientist and received numerous international honours.
This page provides mineralogical data about Frankhawthorneite.

Classification of Frankhawthorneite

IMA status:Approved
Strunz 8th edition ID:4/K.15-10
Nickel-Strunz 10th (pending) edition ID:4.FD.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
D : Hydroxides with OH, without H2O; chains of edge-sharing octahedra
Dana 7th edition ID:33.1.4.1
Dana 8th edition ID:33.1.4.1

33 : SELENATES AND TELLURATES
1 : (AB)m(XO4)pZq
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Type Occurrence of Frankhawthorneite

Type Locality:Centennial Eureka Mine (Blue Rock), Eureka, Tintic District, East Tintic Mts, Juab Co., Utah, USA
Year of Discovery:1995

Physical Properties of Frankhawthorneite

Lustre:Vitreous
Hardness (Mohs):3 - 3½

Crystallography of Frankhawthorneite

Crystal System:Monoclinic
Cell Parameters:a = 9.1Å, b = 5.21Å, c = 4.6Å
β = 98.74°
Ratio:a:b:c = 1.747 : 1 : 0.883
Unit Cell Volume:V 215.56 ų (Calculated from Unit Cell)

Optical Data of Frankhawthorneite

Type:Biaxial
Dispersion:relatively weak

Chemical Properties of Frankhawthorneite

Formula:
Cu
 
2
Te
6+
 
O
 
4
(OH)
 
2
Simplified for copy/paste:Cu2Te6+O4(OH)2
Essential elements:Cu, H, O, Te
All elements listed in formula:Cu, H, O, Te

Relationship of Frankhawthorneite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.FD.05Spertiniite
Cu(OH)
 
2
4.FD.10Bracewellite
CrO(OH)
4.FD.10Diaspore
AlO(OH)
4.FD.10Goethite
α-Fe
3+
 
O(OH)
4.FD.10Groutite
Mn
3+
 
O(OH)
4.FD.10Guyanaite
CrO(OH)
4.FD.10Montroseite
(V
3+
 
,Fe
3+
 
)O(OH)
4.FD.10Tsumgallite
GaO(OH)
4.FD.15Manganite
Mn
3+
 
O(OH)
4.FD.20Yttrotungstite-(Y)
YW
 
2
O
 
6
(OH)
 
3
4.FD.20Yttrotungstite-(Ce)
(Ce,Nd,Y)W
 
2
O
 
6
(OH)
 
3
4.FD.20Unnamed (Nd-analogue of Yttrotungstite-(Ce))
(Nd,Ce,La)W
 
2
O
 
6
(OH)
 
3
4.FD.30Khinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
4.FD.30Parakhinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2

Other Names for Frankhawthorneite

Synonyms:
IMA1993-047
Other Languages:
German:Frankhawthorneit
Russian:Франкхоторнит
Spanish:Frankhawthorneita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Frankhawthorneite

Reference List:

- +
ROBERTS, A.C., GRICE, J.D., CRIDDLE, A.J., JENSEN, M.C. HARRIS, D.C. & MOFFATT, E.A. (1995): Frankhawthorneite, Cu2Te6+O4(OH)2, a new mineral species from the Centennial Eureka mine, Tintic District, Juab Co., Utah, USA. Canadian Mineralogist 33, 641-647.

Internet Links for Frankhawthorneite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Frankhawthorneite details from Handbook of Mineralogy (PDF)
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  • Localities for Frankhawthorneite

    The 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. ? 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.
    USA
     
    • California
      • San Bernardino Co.
        • Baker
          • Otto Mountain
    Jerry A. Baird collected mineral ID by Anthony R. Kampf PhD
    • Utah
      • Juab Co.
        • East Tintic Mts
          • Tintic District
            • Eureka
    ROBERTS, A.C., GRICE, J.D., CRIDDLE, A.J., JENSEN, M.C. HARRIS, D.C. & MOFFATT, E.A. (1995): Frankhawthorneite, Cu2Te6+O4(OH)2, a new mineral species from the Centennial Eureka mine, Tintic District, Juab Co., Utah, USA. Canadian Mineralogist 33, 641-647.
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    Updated Mineral Entry: KupritFrom Uwe Kolitsch, 30th Oct 2014 13:44:19