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Juanitaite

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Formula:
Bi(Cu,Ca,Fe)10(AsO4)4(OH)11 · 2H2O
Colour:
yellow-green, olive green
Lustre:
Resinous, Dull
Hardness:
1
Specific Gravity:
3.61
Crystal System:
Tetragonal
Name:
Named in honor of Juanita A. Curtis (31 October 1917 - 24 September 2006, Long Beach, California, USA), amateur mineral collector who found the mineral. She was very active in creating micromount groups and conferences in California. She and her husband were inducted into the Micromounters' Hall of Fame in 1983.
This page provides mineralogical data about Juanitaite.


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Classification of JuanitaiteHide

Approved
Approval Year:
1999
First Published:
2000
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

Physical Properties of JuanitaiteHide

Resinous, Dull
Transparency:
Translucent
Colour:
yellow-green, olive green
Streak:
greenish yellow
Hardness:
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)

Optical Data of JuanitaiteHide

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 JuanitaiteHide

Formula:
Bi(Cu,Ca,Fe)10(AsO4)4(OH)11 · 2H2O
IMA Formula:
(Cu,Ca,Fe)10Bi(AsO4)4(OH)11 · 2H2O

Crystallography of JuanitaiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P42/nnm
Cell Parameters:
a = 9.961 Å, c = 29.19 Å
Ratio:
a:c = 1 : 2.93
Unit Cell V:
2896 ų
Z:
4
Morphology:
Square crystal plates with rounded corners in sheaf-like subparellel aggregates and rosettes

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
14.6 (100)
7.04 (50)
6.34 (70)
5.07 (50)
3.146 (60)
2.535(50)
(

Type Occurrence of JuanitaiteHide

General Appearance of Type Material:
Square plates with round corners in sheaf-like subparallel aggregates and rosettes
Place of Conservation of Type Material:
Los Angeles County Museum Museum of Natural History, Los Angeles, California, USA
Reference:
Kampf, A.R., Wise, W.S., Rossman, G.R. (2000) Juanitaite: A new mineral from Gold Hill Utah. Mineralogical Record: 31: 301-305.

Synonyms of JuanitaiteHide

Other Language Names for JuanitaiteHide

German:Juanitait
Spanish:Juanitaita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tyrolite6 photos of Juanitaite associated with Tyrolite on mindat.org.
Connellite4 photos of Juanitaite associated with Connellite on mindat.org.
Conichalcite2 photos of Juanitaite associated with Conichalcite on mindat.org.
Azurite1 photo of Juanitaite associated with Azurite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DE.05SenegaliteAl2(PO4)(OH)(OH)2 · H2OOrth. mm2
8.DE.10FluelliteAl2(PO4)F2(OH) · 7H2OOrth. mmm (2/m 2/m 2/m) : Fddd
8.DE.15BulachiteAl2(AsO4)(OH)3 · 3H2OOrth.
8.DE.20ZapataliteCu3Al4(PO4)3(OH)9 · 4H2OTet.
8.DE.25CeruleiteCu2Al7(AsO4)4(OH)13 · 11.5H2OTric.
8.DE.35AldermaniteMg5Al12(PO4)8(OH)22 · 32H2OOrth.
8.DE.45IangreyiteCa2Al7(PO4)2(PO3OH)2(OH,F)15 · 8H2OTrig. 3 2 : P3 2 1

Other InformationHide

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 JuanitaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Wise, W.S., Rossman, G.R. (2000) Juanitaite: A new mineral from Gold Hill Utah. Mineralogical Record: 31: 301-305.
Jambor, J.L., Kovalenker, V.A., Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 376-379.
Mandarino, J.A. (2002) New minerals. The Canadian Mineralogist: 40, 247-254

Internet Links for JuanitaiteHide

Localities for JuanitaiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
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.
            • Mammoth Peak
John Dagenais collection, ID'd by EDS.
    • Tooele Co.
      • Deep Creek Mts
        • Gold Hill District (Clifton District)
          • Gold Hill
A. R. Kampf et al.: Mineralogical Record 31, 301-305 (2000)
collected by Brent Thorne
Mineral and/or Locality  
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