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Pandora prospect, Quijotoa (Covered Wells), Quijotoa Mining District, Quijotoa Mountains, Pima Co., Arizona, USAi
Regional Level Types
Pandora prospectProspect
Quijotoa (Covered Wells)- not defined -
Quijotoa Mining DistrictMining District
Quijotoa MountainsMountain Range
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° North , 112° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~3km
Locality type:
Köppen climate type:


Located about 5 miles West of Covered Wells and near the Linda Lee claims.

Mineralization is davidite-(La) in a matrix of titanite, epidote and feldspar, in a transition zone between a metaspessartine dike and a quartz monzonite intrusive.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Bryan M. Gatehouse, Ian E. Grey and Patrick R. Kelly (1979) The crystal structure of davidite. American Mineralogist 64:1010-1017
Davidite-(La)
Formula: (La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
Colour: Dark brown
Description: Pitchy-lustered masses in matrix; nearly entirely metamict.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima Co., AZ (abstract), Geol.Soc.Amer. Bull.: 70: 1739; Pabst, A. (1961), X-ray crystallography of davidite, Am.Min.: 46: 700-718.; Bryan M. Gatehouse, Ian E. Grey and Patrick R. Kelly (1979) The crystal structure of davidite. American Mineralogist 64:1010-1017
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima Co., AZ (abstract), Geol.Soc.Amer. Bull.: 70: 1739; Pabst, A. (1961), X-ray crystallography of davidite, Am.Min.: 46: 700-718.
'Feldspar Group'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima Co., AZ (abstract), Geol.Soc.Amer. Bull.: 70: 1739; Pabst, A. (1961), X-ray crystallography of davidite, Am.Min.: 46: 700-718.
Titanite
Formula: CaTi(SiO4)O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima Co., AZ (abstract), Geol.Soc.Amer. Bull.: 70: 1739; Pabst, A. (1961), X-ray crystallography of davidite, Am.Min.: 46: 700-718.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Davidite-(La)4.CC.40(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Feldspar Group'-

List of minerals arranged by Dana 8th Edition classification

Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB21O38
Davidite-(La)8.5.1.5(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Feldspar Group'-

List of minerals for each chemical element

HHydrogen
H Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
OOxygen
O Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
O TitaniteCaTi(SiO4)O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O AlbiteNa(AlSi3O8)
FFluorine
F Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al AlbiteNa(AlSi3O8)
SiSilicon
Si TitaniteCaTi(SiO4)O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si AlbiteNa(AlSi3O8)
CaCalcium
Ca TitaniteCaTi(SiO4)O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
TiTitanium
Ti Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
Ti TitaniteCaTi(SiO4)O
VVanadium
V Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
CrChromium
Cr Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
FeIron
Fe Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
YYttrium
Y Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
LaLanthanum
La Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
UUranium
U Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima County, Arizona (abstract), Geological Society of America Bull.: 70: 1739.
Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mountains, Pima County, Arizona, Arizona Geological Society Digest: 3: 48.
Pabst, A. (1961), X-ray crystallography of davidite, American Mineralogist: 46: 700-718.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 199.

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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