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Mendozavilite-NaFe

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Big Photo

Rustler Mine, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
© 2005 M. Kampf

Show Mendozavilite-NaFe Photos (8)



Formula:
Na(Ca,Mg)
 
2
Fe
3+
6
(PMo
 
11
O
 
39
)(PO
 
4
)
 
2
(OH,Cl)
 
10
 · 33H
 
2
O
Hardness:1½
Member of:Betpakdalite Group
Name:Named in honor of Heriberto Mendoza Avila (1924– ), Phelps Dodge exploration geologist, who found the first specimen.


Formerly called mendozavilite; redefined in 2010 (IMA 10-E).

Classification of Mendozavilite-NaFe

IMA status:Redefined Approved 2010
Strunz 8th edition ID:7/D.57-10
Nickel-Strunz 10th (pending) edition ID:7.GB.45

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
Dana 8th edition ID:49.4.5.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
4 : Compound Molybdates and Tungstates
Hey's CIM Ref.:22.5.6

22 : Phosphates, Arsenates or Vanadates with other Anions
5 : Phosphates, arsenates or vanadates with chromate, molybdate, niobate or tantalate
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Type Occurrence of Mendozavilite-NaFe

Type Locality:San Judas Mine, Cumobabi, La Verde District, Mun. de Moctezuma, Sonora, Mexico
Year of Discovery:1980

Physical Properties of Mendozavilite-NaFe

Hardness (Mohs):1½

Optical Data of Mendozavilite-NaFe

Type:Biaxial (+)
RI values: nα = 1.762 nβ = 1.763 nγ = 1.766
2V:Measured: 5° to 15°, Calculated: 62°
Maximum Birefringence:δ = 0.004

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

Chemical Properties of Mendozavilite-NaFe

Formula:
Na(Ca,Mg)
 
2
Fe
3+
6
(PMo
 
11
O
 
39
)(PO
 
4
)
 
2
(OH,Cl)
 
10
 · 33H
 
2
O
Essential elements:Ca, Fe, H, Mo, Na, O, P
All elements listed in formula:Ca, Cl, Fe, H, Mg, Mo, Na, O, P

Relationship of Mendozavilite-NaFe to other Species

Member of:Betpakdalite Group
Other Members of Group:

- +
Betpakdalite-CaCa
{Mg(H
 
2
O)
 
6
}Ca
 
2
(H
 
2
O)
 
13
[Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)](H
 
2
O)
 
4
Betpakdalite-NaCa
(Na
 
2
,Ca)Fe
 
2
(As
 
2
Mo
 
6
O
 
28
) · 15H
 
2
O
Melkovite
CaFe
3+
2
Mo
 
5
(PO
 
4
)
 
2
O
 
10
(OH)
 
12
 · 8H
 
2
O
Obradovicite-KCu
H
 
4
(K,Na)CuFe
 
2
(MoO
 
4
)
 
5
(AsO
 
4
) · 12H
 
2
O
Paramendozavilite
NaAl
 
4
Fe
3+
7
(PMo
 
12
O
 
40
)(PO
 
4
)
 
5
(OH)
 
16
 · 56H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.GB.05Lindgrenite
Cu
 
3
(MoO
 
4
)
 
2
(OH)
 
2
7.GB.10Szenicsite
Cu
 
3
(MoO
 
4
)(OH)
 
4
7.GB.15Cuprotungstite
Cu
 
2
(WO
 
4
)(OH)
 
2
7.GB.15UM1999-38-WO:CrV
(V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3]
7.GB.20Phyllotungstite
(H
 
2
O,M)
 
x
(W,Fe)(O,OH)
 
3
 · yH
 
2
O (M = Ca, Cs, Pb or K)
7.GB.25Rankachite
Ca
 
0.5
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH) · 2H
 
2
O
7.GB.30Ferrimolybdite
Fe
 
2
(MoO
 
4
)
 
3
 · nH
 
2
O
7.GB.35Anthoinite
AlWO
 
3
(OH)
 
3
7.GB.35Mpororoite
Al
 
2
(WO
 
4
)
 
2
O · 6H
 
2
O
7.GB.40Obradovicite-KCu
H
 
4
(K,Na)CuFe
 
2
(MoO
 
4
)
 
5
(AsO
 
4
) · 12H
 
2
O
7.GB.45Paramendozavilite
NaAl
 
4
Fe
3+
7
(PMo
 
12
O
 
40
)(PO
 
4
)
 
5
(OH)
 
16
 · 56H
 
2
O
7.GB.50Tancaite-(Ce)
FeCe(MoO
 
4
)
 
3
·3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
22.5.1Vauquelinite
Pb
 
2
Cu(CrO
 
4
)(PO
 
4
)(OH)
22.5.2Embreyite
Pb
 
5
(CrO
 
4
)
 
2
(PO
 
4
)
 
2
 · H
 
2
O
22.5.3Cassedanneite
Pb
 
5
(CrO
 
4
)
 
2
(VO
 
4
)
 
2
 · H
 
2
O
22.5.4Fornacite
Pb
 
2
Cu(CrO
 
4
)(AsO
 
4
)(OH)
22.5.5Molybdofornacite
Pb
 
2
Cu(MoO
 
4
,CrO
 
4
)(AsO
 
4
,PO
 
4
)(OH)
22.5.7Paramendozavilite
NaAl
 
4
Fe
3+
7
(PMo
 
12
O
 
40
)(PO
 
4
)
 
5
(OH)
 
16
 · 56H
 
2
O
22.5.8Betpakdalite-CaCa
{Mg(H
 
2
O)
 
6
}Ca
 
2
(H
 
2
O)
 
13
[Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)](H
 
2
O)
 
4
22.5.9Betpakdalite-NaCa
(Na
 
2
,Ca)Fe
 
2
(As
 
2
Mo
 
6
O
 
28
) · 15H
 
2
O
22.5.10Obradovicite-KCu
H
 
4
(K,Na)CuFe
 
2
(MoO
 
4
)
 
5
(AsO
 
4
) · 12H
 
2
O
22.5.11Melkovite
CaFe
3+
2
Mo
 
5
(PO
 
4
)
 
2
O
 
10
(OH)
 
12
 · 8H
 
2
O
22.5.12Rankachite
Ca
 
0.5
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH) · 2H
 
2
O
22.5.13Olmsteadite
KFe
2+
2
(Nb
5+
 
,Ta
5+
 
)(PO
 
4
)
 
2
O
 
2
 · 2H
 
2
O
22.5.14Johnwalkite
K(Mn
2+
 
,Fe
2+
 
,Fe
3+
 
)
 
2
(Nb
5+
 
,Ta
5+
 
)(PO
 
4
)
 
2
O
 
2
 · 2(H
 
2
O,OH)

Other Names for Mendozavilite-NaFe

Synonyms:
IMA1982-009Mendozavilite
Other Languages:
German:Mendozavilit
Spanish:Mendozavilita

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 Mendozavilite-NaFe

Reference List:

- +
Boletín de Mineralogía (Sociadad Mexicana Mineralogía)(1986): 2: 13-19.

American Mineralogist (1988): 73: 193 (abstract)

Australian Journal of Mineralogy (2002): 8: 11-15.

Internet Links for Mendozavilite-NaFe

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    • Localities for Mendozavilite-NaFe

    Hide Locality List
    (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.
    Australia
     
    • Western Australia
    		W.D. Birch, A. Pring & K. Wallwork (2002) Mendozavilite from the Fitzgerald River District, Western Australia, Australian Journal of Mineralogy, 8, 11-15.
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
        • La Verde District
          • Cumobabi
    		Bol. de Mineral.(1986) 2, 13-19; Panczner (1987): 136, 269, 292.
    USA
     
    • Utah
      • Tooele Co.
        • Deep Creek Mts
    		Min Rec 20:1 pp69-75
    Handbook of Mineralogy
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