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Juanitaite

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Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
© Caltech

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Formula:
Bi(Cu,Ca,Fe)
 
10
[(OH)
 
11
|(AsO
 
4
)
 
4
] · 2H
 
2
O
System:TetragonalColour:yellow-green, olive green
Lustre:Resinous, DullHardness:1
Name:For Juanita Curtis, who found the mineral
This page provides mineralogical data about Juanitaite.

Classification of Juanitaite

IMA status:Approved 1999
Strunz 8th edition ID:7/D.53-95
Nickel-Strunz 10th (pending) edition ID:8.DE.40

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
E : With only medium-sized cations, (OH, etc.):RO4 = 3:1
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Type Occurrence of Juanitaite

Type Locality:Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
Place of Conservation of Type Material:Los Angeles County Museum Museum of Natural History, Los Angeles, California, USA
Year of Discovery:1971

Physical Properties of Juanitaite

Lustre:Resinous, Dull
Diaphaneity (Transparency):Translucent
Colour:yellow-green, olive green
Streak:greenish yellow
Hardness (Mohs):1
Hardness Data:Estimated
Cleavage:Perfect
perfect on {001} and {110}, and good on {100}
Fracture:None observed
Density (measured):3.61 g/cm3
Density (calculated):3.56 g/cm3

Crystallography of Juanitaite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P42/nnm {P42/n 2/n 2/m}
Cell Parameters:a = 9.961Å, c = 29.19Å
Ratio:a:c = 1 : 2.93
Unit Cell Volume:V 2896 ų
Z:4
Morphology:Square crystal plates with rounded corners in sheaf-like subparellel aggregates and rosettes
X-Ray Powder Diffraction:
d-spacingIntensity
14.6 (100)
7.04 (50)
6.34 (70)
5.07 (50)
3.146 (60)
2.535(50)

Optical Data of Juanitaite

Type:Uniaxial (-)
RI values: nω = 1.785 nε = 1.705
2V:Measured: 20°
Maximum Birefringence:δ = 0.080

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:none
Comments:O = olive brown
E = olive-green

Chemical Properties of Juanitaite

Formula:
Bi(Cu,Ca,Fe)
 
10
[(OH)
 
11
|(AsO
 
4
)
 
4
] · 2H
 
2
O
Essential elements:As, Bi, Cu, H, O
All elements listed in formula:As, Bi, Ca, Cu, Fe, H, O

Relationship of Juanitaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DE.05Senegalite
Al
 
2
[(OH)
 
3
|PO
 
4
] · H
 
2
O
8.DE.10Fluellite
Al
 
2
[F
 
2
|OH|PO
 
4
] · 7H
 
2
O
8.DE.15Bulachite
Al
 
2
[(OH)
 
3
|AsO
 
4
] · 3H
 
2
O
8.DE.20Zapatalite
Cu
 
3
Al
 
4
[(OH)
 
3
|PO
 
4
]
 
3
 · 4H
 
2
O
8.DE.25Ceruleite
Cu
 
2
Al
 
7
[(OH)
 
13
|(AsO
 
4
)
 
4
] · 11.5H
 
2
O
8.DE.35Aldermanite
Mg
 
5
Al
 
12
[(OH)
 
11
|(PO
 
4
)
 
4
]
 
2
 · 32H
 
2
O

Other Names for Juanitaite

Synonyms:
IMA1999-022
Other Languages:
German:Juanitait
Spanish:Juanitaita

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 Juanitaite

Reference List:Kampf, A. R.; Wise, W. S.; Rossman, G. R. (2000): Juanitaite: A new mineral from Gold Hill Utah. Mineralogical Record: 31, 301-305.

Internet Links for Juanitaite

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    Localities for Juanitaite

    Hide Locality List
    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
     
    • Utah
      • Tooele Co.
        • Deep Creek Mts
          • Gold Hill District (Clifton District)
            • Gold Hill
    		A. R. Kampf et al.: Mineral. Rec. 31, 301-305 (2000)
    collected by Brent Thorne
    Mineral and/or Locality
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