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Goldquarryite

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Gold Quarry Mine (Maggie claims), Maggie Creek District, Eureka Co., Nevada, USA
© Brent Thorne

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Formula:
CuCd
 
2
Al
 
3
(PO
 
4
)
 
4
F
 
2
(H
 
2
O,F)
 
2
 · 10H
 
2
O
System:TriclinicColour:Blue, pale-blue to ...
Hardness:3 - 4
Name:For the type locality, at the Gold Quarry Mine, Maggie Creek District, Eureka Co., Nevada, USA.


One of the very rare secondary cadmium minerals.
Occurs as isolated sprays of radiating crystals.

Classification of Goldquarryite

IMA status:Approved 2001
Nickel-Strunz 10th (pending) edition ID:8.DB.65

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

Type Locality:Gold Quarry Mine (Maggie claims), Maggie Creek District, Eureka Co., Nevada, USA
Place of Conservation of Type Material:Geologic Survey of Canada #68084
Geological Setting of type material:Supergene mineral in a breccia
Associated Minerals at type locality:
OpalHewettiteCarbonate-rich Fluorapatite

Physical Properties of Goldquarryite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Blue, pale-blue to blue-gray
Streak:white
Hardness (Mohs):3 - 4
Tenacity:Brittle
Cleavage:None Observed
Fracture:Irregular/Uneven
Density (measured):2.78 g/cm3
Density (calculated):2.81 g/cm3

Crystallography of Goldquarryite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 6.777Å, b = 9.081Å, c = 10.104Å
α = 101.4°, β = 104.24°, γ = 102.56°
Ratio:a:b:c = 0.746 : 1 : 1.113
Unit Cell Volume:V 567.1 ų
Z:1
Morphology:Acicular to elongated flattened blades
Twinning:{001}
Structure
  Reference
Cooper M A Hawthorne F C (2004) The crystal structure of goldquarryite, (Cu,_)(Cd,Ca)2Al2(PO4)4F2(H2O)10{(H2O),F}2, a secondary phosphate from the Gold Quarry Mine, Eureka County, Nevada, U.S.A. Locality: Gold Quarry Mine, Carlin, Eureka County, Nevada, USA. The Canadian Mineralogist 42:753-761.

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More Crystal Structures
Click here to view more crystal structures at the American Mineralogist Crystal Structure Database

Optical Data of Goldquarryite

Type:Biaxial (+)
RI values: nα = 1.570 nβ = 1.573 nγ = 1.578
2V:Measured: 30° , Calculated: 75°
Maximum Birefringence:δ = 0.008

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:r
Comments:Deep blue parallel to elongation, very pale blue normal to elongation.

Chemical Properties of Goldquarryite

Formula:
CuCd
 
2
Al
 
3
(PO
 
4
)
 
4
F
 
2
(H
 
2
O,F)
 
2
 · 10H
 
2
O
Essential elements:Al, Cd, Cu, F, H, O, P
All elements listed in formula:Al, Cd, Cu, F, H, O, P

Relationship of Goldquarryite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DB.05Diadochite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH) · 5H
 
2
O
8.DB.05Pitticite
(Fe, SO
 
4
, AsO
 
4
, H
 
2
O) ?
8.DB.05Destinezite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH) · 6H
 
2
O
8.DB.10Vashegyite
Al
 
11
(PO
 
4
)
 
9
(OH)
 
6
 · 38H
 
2
O
8.DB.15Schoonerite
ZnMn
2+
 
Fe
2+
2
Fe
3+
 
(PO
 
4
)
 
3
(OH)
 
2
 · 9H
 
2
O
8.DB.20Sinkankasite
H
 
2
Mn
2+
 
Al(PO
 
4
)
 
2
(OH) · 6H
 
2
O
8.DB.25Mitryaevaite
Al
 
6
(PO
 
4
)((P,S)O
 
3
(OH,O))
 
2
F
 
2
(OH)
 
2
 · 14.5H
 
2
O
8.DB.30Sanjuanite
Al
 
2
(PO
 
4
)(SO
 
4
)(OH) · 9H
 
2
O
8.DB.35Sarmientite
Fe
3+
2
(AsO
 
4
)(SO
 
4
)(OH) · 5H
 
2
O
8.DB.40Bukovskýite
Fe
3+
2
(AsO
 
4
)(SO
 
4
)(OH) · 9H
 
2
O
8.DB.45Zýkaite
Fe
3+
4
(AsO
 
4
)
 
3
(SO
 
4
)(OH) · 15H
 
2
O
8.DB.50Giniite
Fe
2+
 
Fe
3+
4
(PO
 
4
)
 
3
(OH)
 
5
 · 2H
 
2
O
8.DB.55Sasaite
(Al,Fe
3+
 
)
 
14
(PO
 
4
)
 
11
(SO
 
4
)(OH)
 
7
 · 83H
 
2
O
8.DB.60Mcauslanite
HFe
2+
3
Al
 
2
(PO
 
4
)
 
4
F · 18H
 
2
O
8.DB.70Birchite
Cd
 
2
Cu
 
2
(PO
 
4
)
 
2
(SO
 
4
) · 5H
 
2
O
8.DB.75Braithwaiteite
NaCu
 
5
Ti
 
2
Sb
 
2
(AsO
 
4
)(HAsO
 
4
)
 
2
O
 
2
 · 8H
 
2
O

Other Names for Goldquarryite

Synonyms:
IMA2001-058
Other Languages:
Russian:Голдкварриит

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 Goldquarryite

Reference List:

- +
Mineralogical Record (2003): 34(3): 237-240.

Mark A. Cooper and Frank C. Hawthorne (2004): The crystal structure of goldquarryite, (Cu2+,∅)(Cd,Ca)2Al3(PO4)4F2(H2O)10{(H2O),F}2, a secondary phosphate from the Gold Quarry mine, Eureka County, Nevada, U.S.A. Canadian Mineralogist 42, 753-761.


Internet Links for Goldquarryite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    • Localities for Goldquarryite

    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.
    USA
     
    • Nevada
      • Eureka Co.
        • Maggie Creek District
    		Min Rec 34:3 pp237-240
    Mineral and/or Locality
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