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Xocomecatlite

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Formula:
Cu
 
3
(TeO
 
4
)(OH)
 
4
System:OrthorhombicColour:emerald-green
Hardness:4
Name:From Nahua "xocomecatl", grapes, alluding to its occurrence in clusters of green spherules.
This page provides mineralogical data about Xocomecatlite.

Classification of Xocomecatlite

IMA status:Approved 1974
Strunz 8th edition ID:4/K.15-12
Nickel-Strunz 10th (pending) edition ID:7.BB.50

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
B : With medium-sized cations
Dana 7th edition ID:33.1.2.1
Dana 8th edition ID:33.1.2.1

33 : SELENATES AND TELLURATES
1 : (AB)m(XO4)pZq
Hey's CIM Ref.:28.4.1

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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Type Occurrence of Xocomecatlite

Type Locality:Bambollita Mine (Oriental Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Year of Discovery:1974

Physical Properties of Xocomecatlite

Colour:emerald-green
Streak:Light green
Hardness (Mohs):4

Crystallography of Xocomecatlite

Crystal System:Orthorhombic
Cell Parameters:a = 12.14Å, b = 14.31Å, c = 11.66Å
Ratio:a:b:c = 0.848 : 1 : 0.815
Unit Cell Volume:V 2,025.61 ų (Calculated from Unit Cell)

Optical Data of Xocomecatlite

Type:Biaxial (-)
RI values: nα = 1.775 nβ = 1.900 nγ = 1.920
2V:Measured: 41° , Calculated: 40°
Maximum Birefringence:δ = 0.145

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:low

Chemical Properties of Xocomecatlite

Formula:
Cu
 
3
(TeO
 
4
)(OH)
 
4
Simplified for copy/paste:Cu3(TeO4)(OH)4
Essential elements:Cu, H, O, Te
All elements listed in formula:Cu, H, O, Te

Relationship of Xocomecatlite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.BB.05Caminite
Mg
 
7
(SO
 
4
)
 
5
(OH)
 
4
· H
 
2
O
7.BB.10Hauckite
Fe
3+
3
(Mg,Mn
2+
 
)
 
24
Zn
 
18
(SO
 
4
)
 
4
(CO
 
3
)
 
2
(OH)
 
81
7.BB.15Antlerite
Cu
 
3
(SO
 
4
)(OH)
 
4
7.BB.20Dolerophanite
Cu
 
2
(SO
 
4
)O
7.BB.25Brochantite
Cu
 
4
(SO
 
4
)(OH)
 
6
7.BB.30Vergasovaite
Cu
 
3
(SO
 
4
)(MoO
 
4
,SO
 
4
)O
7.BB.35Klebelsbergite
(SbO)
 
4
(SO
 
4
)(OH)
 
2
7.BB.40Schuetteite
Hg
2+
3
(SO
 
4
)O
 
2
7.BB.45Paraotwayite
Ni(OH)
 
2-x
(SO
 
4
,CO
 
3
)
 
0.5x
7.BB.55Pauflerite
(V
4+
 
O)SO
 
4
7.BB.60Grandviewite
Cu
 
3
Al
 
9
(SO
 
4
)
 
2
(OH)
 
29
Related Minerals - Hey's Index Grouping:

- +
28.4.2Carlfriesite
CaTe
4+
2
Te
6+
 
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
(TeO
 
6
)
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)(OH)
 
25
Cl · 27H
 
2
O
28.4.5Oboyerite
H
 
6
(Pb,Ca)
 
6
(Te
4+
 
O
 
3
)
 
3
(Te
6+
 
O
 
6
)
 
2
· 2H
 
2
O
28.4.6Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
· 8H
 
2
O
28.4.7Girdite
H
 
2
Pb
 
3
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
28.4.8Khinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.9Parakhinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.10Dugganite
Pb
 
3
Zn
 
3
(AsO
 
4
)
 
2
(TeO
 
6
)
28.4.11Kuksite
Pb
 
3
Zn
 
3
(PO
 
4
)
 
2
(TeO
 
6
)
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
(VO
 
4
)
 
2
(TeO
 
6
)
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
(TeO
 
3
)
 
4
(TeO
 
6
)(SO
 
4
)
28.4.14Montanite
Bi
 
2
(TeO
 
6
) · 2H
 
2
O
28.4.15Kuranakhite
PbMn
4+
 
Te
6+
 
O
 
6
28.4.16Cuzticite
Fe
3+
2
(TeO
 
6
) · 3H
 
2
O
28.4.17Yecoraite
Fe
3+
3
Bi
 
5
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)O
 
9
· 9H
 
2
O

Other Names for Xocomecatlite

Synonyms:
IMA1974-048
Other Languages:
German:Xocomecatlit
Spanish:Xocomecatlita

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 Xocomecatlite

Reference List:

- +
Mineralogical Magazine (1975): 40: 221-226.

American Mineralogist (1976): 61: 504.

Internet Links for Xocomecatlite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Xocomecatlite details from Handbook of Mineralogy (PDF)
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  • Xocomecatlite specimens for sale - minfind.com
  • Localities for Xocomecatlite

    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.
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
        • Moctezuma
    Min.Mag.(1975) 40, 221-226; Panczner(1987):136-399.
    USA
     
    • Arizona
      • Cochise Co.
        • Tombstone Hills
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 209; Williams, S.A. (1978), Khinite, parakhinite, and dugganite, three new tellurates from Tombstone, Arizona, Am.Min.: 63: 1016-1019.
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 267.
            • Silver Plume Mine (Emerald & Silver Plume Mine group)
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 428; Williams, S.A. (1978), Khinite, parakhinite and dugganite, three new tellurates from Tombstone, AZ, Am.Min.: 63: 1016-1019.
    • California
      • San Bernardino Co.
        • Baker
          • Otto Mountain
    collected by Eckhard D. Stuart; EDS and PXRD cofirmed by A. Kampf
    Collected by Bob Housley. EDS and PXRD analyzed.
    • Utah
      • Juab Co.
        • East Tintic Mts
          • Tintic District
            • Eureka
    [MinRec 27:464]; Canadian Mineralogist; February 1996; v. 34; no. 1; p. 49-54
      • Utah Co.
        • East Tintic Mts
          • East Tintic District
    SEM EDS confirmed by Rob Bowell.
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