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Hectorfloresite

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Big Photo

Pampa Rica, Antofagasta Region, Chile
© Thomas Witzke

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Formula:
Na
 
9
(SO
 
4
)
 
4
(IO
 
3
)
System:Monoclinic
Name:For Chilean geologist Hector Flores (1906-84).
This page provides mineralogical data about Hectorfloresite.

Classification of Hectorfloresite

IMA status:Approved 1987
Strunz 8th edition ID:6/B.14-10
Nickel-Strunz 10th (pending) edition ID:7.BD.60

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
Dana 8th edition ID:32.1.2.1

32 : COMPOUND SULFATES
1 : Anhydrous Compound Sulfates
Hey's CIM Ref.:29.8

29 : Iodates
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Type Occurrence of Hectorfloresite

Type Locality:Alianza Mine (Rajo No. 13), Oficina Victoria, Iquique Province, Tarapacá Region, Chile
Year of Discovery:1989

Crystallography of Hectorfloresite

Crystal System:Monoclinic
Cell Parameters:a = 18.77Å, b = 6.93Å, c = 14.23Å
β = 108.91°
Ratio:a:b:c = 2.709 : 1 : 2.053
Unit Cell Volume:V 1,751.08 ų (Calculated from Unit Cell)

Optical Data of Hectorfloresite

Type:Biaxial (-)
RI values: nα = 1.493 nβ = 1.521 nγ = 1.523
2V:Measured: 26° , Calculated: 28°
Maximum Birefringence:δ = 0.030

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

Chemical Properties of Hectorfloresite

Formula:
Na
 
9
(SO
 
4
)
 
4
(IO
 
3
)
Essential elements:I, Na, O, S
All elements listed in formula:I, Na, O, S

Relationship of Hectorfloresite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.BD.05Sulphohalite
Na
 
6
(SO
 
4
)
 
2
FCl
7.BD.05Sulfohalite
7.BD.10Galeite
Na
 
15
(SO
 
4
)
 
5
F
 
4
Cl
7.BD.10Schairerite
Na
 
3
(SO
 
4
)(F,Cl)
7.BD.15Kogarkoite
Na
 
3
(SO
 
4
)F
7.BD.20Caracolite
Na
 
3
Pb
 
2
(SO
 
4
)
 
3
Cl
7.BD.20Cesanite
Na
 
3
Ca
 
2
(SO
 
4
)
 
3
(OH)
7.BD.25Burkeite
Na
 
6
(CO
 
3
)(SO
 
4
)
 
2
7.BD.30Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
7.BD.35Cannonite
Bi
 
2
(SO
 
4
)O(OH)
 
2
7.BD.40Lanarkite
Pb
 
2
(SO
 
4
)O
7.BD.45Grandreefite
Pb
 
2
(SO
 
4
)F
 
2
7.BD.50Itoite
Pb
 
3
Ge
4+
 
(SO
 
4
)
 
2
O
 
2
(OH)
 
2
7.BD.55Chiluite
Bi
 
3
Te
6+
 
Mo
6+
 
O
 
10.5
7.BD.65Pseudograndreefite
Pb
 
6
(SO
 
4
)F
 
10
7.BD.70Sundiusite
Pb
 
10
(SO
 
4
)O
 
8
Cl
 
2
Related Minerals - Hey's Index Grouping:

- +
29.1Salesite
Cu(IO
 
3
)(OH)
29.2Bellingerite
Cu
 
3
(IO
 
3
)
 
6
 · 2H
 
2
O
29.3Lautarite
Ca(IO
 
3
)
 
2
29.4Brüggenite
Ca(IO
 
3
)
 
2
 · H
 
2
O
29.5Dietzeite
Ca
 
2
(IO
 
3
)
 
2
(CrO
 
4
) · H
 
2
O
29.6Seeligerite
Pb
 
3
(IO
 
3
)OCl
 
3
29.7Schwartzembergite
Pb
 
5
H
 
2
(IO
 
2
)O
 
4
Cl
 
3

Other Names for Hectorfloresite

Synonyms:
IMA1987-050a
Other Languages:
German:Hectorfloresit
Spanish:Hectorfloresita

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 Hectorfloresite

Reference List:

- +
American Mineralogist: 74: 1207-1214.

Internet Links for Hectorfloresite

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

    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.
    Chile
     
    • Antofagasta Region
    		Robinson, G.W. (1993): What's New in Minerals ? Mineralogical Record 24: 49
      • Tocopilla Province
        • Pedro de Valdivia
    		Pueyo, J. J., Chong, G. & Vega, M. (1998): Mineralogy and parental brine evolution in the Pedro de Valdivia nitrate deposit, Antofagasta, Chile. Revista Geologica de Chile 25, 3-15. (in Spanish)
    • Tarapacá Region
      • Iquique Province
        • Oficina Victoria
    		Amer. Min.:74:1207-1214.
        • Pozo Almonte
    		collected by myself
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