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Chalconatronite

Big Photo

Carr Boyd Rocks Ni mine (Carr Boyd Ni mine), Goongarrie, Kalgoorlie-Boulder City, Goldfields-Esperance region, Western Australia, Australia
© Knut Eldjarn

Show Chalconatronite Photos (3)
Formula:
Na
 
2
Cu(CO
 
3
)
 
2
·3H
 
2
O
System:MonoclinicColour:Greenish-blue to pale ...
Name:For the chemical composition
This page provides mineralogical data about Chalconatronite.

Classification of Chalconatronite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/D.02-70
Nickel-Strunz 10th (pending) edition ID:5.CB.40

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
B : With large cations (alkali and alkali-earth carbonates)
Dana 8th edition ID:15.2.3.1

15 : HYDRATED NORMAL CARBONATES
2 : AmBn(XO3)p·xH2O, with (m+n):p > 1:1
Hey's CIM Ref.:11.2.4

11 : Carbonates
2 : Carbonates of Cu
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Type Occurrence of Chalconatronite

Type Locality:Egypt
Year of Discovery:1955
Geological Setting of type material:Originally found as alteration of bronze artifact.

Occurrences of Chalconatronite

Geological Setting:Secondary mineral in oxidation zones

Physical Properties of Chalconatronite

Diaphaneity (Transparency):Transparent
Colour:Greenish-blue to pale blue
Comment:Soft
Density (measured):2.27(3) g/cm3
Density (calculated):2.31 g/cm3
Comment:Calculated from synthetic material

Crystallography of Chalconatronite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 9.7Å, b = 6.09Å, c = 13.82Å
β = 91.92°
Ratio:a:b:c = 1.593 : 1 : 2.269
Unit Cell Volume:V 815.93 ų (Calculated from Unit Cell)
Morphology:Fine grained crusts of pseudohexagonal plates or laths, massive, blebs, films.
Comment:Synthetic

Optical Data of Chalconatronite

Type:Biaxial (+)
RI values: nα = 1.483 nβ = 1.530 nγ = 1.576
2V:Measured: 70° , Calculated: 86°
Maximum Birefringence:δ = 0.093

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none
Pleochroism:Visible
Comments:X= nearly colorless
Y= pale blue
Z= blue

Chemical Properties of Chalconatronite

Formula:
Na
 
2
Cu(CO
 
3
)
 
2
·3H
 
2
O
Essential elements:C, Cu, H, Na, O
All elements listed in formula:C, Cu, H, Na, O

Relationship of Chalconatronite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.CB.05Thermonatrite
Na
 
2
CO
 
3
·H
 
2
O
5.CB.10Natron
Na
 
2
CO
 
3
·10H
 
2
O
5.CB.15Trona
Na
 
3
H(CO
 
3
)
 
2
·2H
 
2
O
5.CB.20Monohydrocalcite
CaCO
 
3
·H
 
2
O
5.CB.25Ikaite
CaCO
 
3
·6H
 
2
O
5.CB.30Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
·2H
 
2
O
5.CB.35Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
·5H
 
2
O
5.CB.45Baylissite
K
 
2
Mg(CO
 
3
)
 
2
·4H
 
2
O
5.CB.50Tuliokite
Na
 
6
BaTh(CO
 
3
)
 
6
·6H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.2.1Malachite
Cu
 
2
[(OH)
 
2
|CO
 
3
]
11.2.2Azurite
Cu
 
3
[OH|CO
 
3
]
 
2
11.2.5Callaghanite
Cu
 
2
Mg
 
2
[(OH)
 
6
|CO
 
3
] · 2H
 
2
O

Other Names for Chalconatronite

Other Languages:
German:Chalconatronit
Russian:Хальконатронит
Spanish:Chalconatronita

Other Information

Other Information:Partialy soluble
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 Chalconatronite

Reference List:American Mineralogist: 40: 943.

Zeitschrift für Kristallographie: 148: 165-175.

Internet Links for Chalconatronite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Chalconatronite in the Natural History Museum (London) online catalogue
  • Chalconatronite details from Handbook of Mineralogy (PDF)
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    Localities for Chalconatronite

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