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Juanitaite

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Formula:
Bi(Cu,Ca,Fe)10(AsO4)4(OH)11 · 2H2O
System:
Tetragonal
Colour:
yellow-green, olive green
Lustre:
Resinous, Dull
Hardness:
1
Name:
For Juanita Curtis, who found the mineral
This page provides mineralogical data about Juanitaite.

Classification of Juanitaite

Approved 1999
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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First Recorded Occurrence of Juanitaite

Place of Conservation of First Recorded Material:
Los Angeles County Museum Museum of Natural History, Los Angeles, California, USA
Year of Discovery:
1971

Physical Properties of Juanitaite

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:
3.61 g/cm3 (Measured)    3.56 g/cm3 (Calculated)

Crystallography of Juanitaite

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P42/nnm
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 Data:
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°
Max Birefringence:
δ = 0.080
Image 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(AsO4)4(OH)11 · 2H2O
Essential elements:
All elements listed in formula:

Relationship of Juanitaite to other Species

8.DE.05SenegaliteAl2(PO4)(OH)(OH)2 · H2O
8.DE.10FluelliteAl2(PO4)F2(OH) · 7H2O
8.DE.15BulachiteAl2(AsO4)(OH)3 · 3H2O
8.DE.20ZapataliteCu3Al4(PO4)3(OH)9 · 4H2O
8.DE.25CeruleiteCu2Al7(AsO4)4(OH)13 · 11.5H2O
8.DE.35AldermaniteMg5Al12(PO4)8(OH)22 · 32H2O
8.DE.45IangreyiteCa2Al7(PO4)2(PO3OH)2(OH,F)15 · 8H2O

Other Names for Juanitaite

Name in Other Languages:
German:Juanitait
Spanish:Juanitaita

Other Information

Health Risks:
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

Localities for Juanitaite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Spain
 
  • Andalusia
    • Almería
      • Huércal-Overa
        • Cuesta Alta
          • Cerro Minado Mines
VIÑALS, J., FAVREAU, G., and EYTIER C. & J.-R. (2010): Bobkingite, capgaronnite, juanitaite, gerhardtite, reevesite and other rare minerals from Cerro Minado, Huercal-Overa (Almería). Mineral Up, 4, 3, 6-23 Versions simultaneously published in Catalan (Mineralogistes de Catalunya); in Spanish version (Revista de Minerales).
USA
 
  • Utah
    • Juab Co.
      • East Tintic Mts
        • Tintic District
          • Mammoth
Collected by and in the collection of Brent Thorne.
John Dagenais collection, ID'd by EDS.
    • 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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