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Chalcocyanite

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Formula:
CuSO
 
4
System:OrthorhombicColour:Colourless, light green, ...
Hardness:
Name:From the Greek for "copper" and "azure-blue" in allusion to the composition and the property of its turning blue when exposed to moist air.


Soluble in H2O and very hygroscopic, altering to chalcanthite.

Classification of Chalcocyanite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/A.01-10
Nickel-Strunz 10th (pending) edition ID:7.AB.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
B : With medium-sized cations
Dana 8th edition ID:28.3.3.1

28 : ANHYDROUS ACID AND NORMAL SULFATES
3 : AXO4
Hey's CIM Ref.:25.2.1

25 : Sulphates
2 : Sulphates of Cu and Ag
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Type Occurrence of Chalcocyanite

Type Locality:Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy
General Appearance of Type Material:Sublimates
Year of Discovery:1868
Geological Setting of type material:Active volcanic fumaroles.
Associated Minerals at type locality:
MelanothalliteEuchlorineEriochalciteDolerophanite

Occurrences of Chalcocyanite

Geological Setting:Sublimates near volcanic fumaroles.

Physical Properties of Chalcocyanite

Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless, light green, brownish, yellowish, sky-blue; colourless in transitted light
Hardness (Mohs):
Density (measured):3.65(5) g/cm3
Density (calculated):3.89 g/cm3

Crystallography of Chalcocyanite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:a = 6.709(1) Å, b = 8.409(1) Å, c = 4.833(1) Å
Ratio:a:b:c = 0.798 : 1 : 0.575
Unit Cell Volume:V 272.66 ų (Calculated from Unit Cell)
Z:4
Morphology:Crystals frequently tabular {010} and slightly elongated [001].
Crystal Atlas:
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Chalcocyanite no.1 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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Transparency
Opaque | Translucent | Transparent

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Optical Data of Chalcocyanite

Type:Biaxial (-)
RI values: nα = 1.724(3) nβ = 1.733(3) nγ = 1.739(3)
2V:Measured: 70° , Calculated: 78°
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v medium
Comments:2V (measured) is large

Chemical Properties of Chalcocyanite

Formula:
CuSO
 
4
Simplified for copy/paste:CuSO4
Essential elements:Cu, O, S
All elements listed in formula:Cu, O, S
Analytical Data:Very hygroscopic. Readily soluble in water.

Relationship of Chalcocyanite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.AB.05Mikasaite
Fe
 
2
(SO
 
4
)
 
3
7.AB.05Millosevichite
(Al,Fe)
 
2
(SO
 
4
)
 
3
7.AB.10Zinkosite
ZnSO
 
4
7.AB.10Ferrotellurite
Fe(TeO
 
4
) (?)
Related Minerals - Hey's Index Grouping:

- +
25.2.2Bonattite
CuSO
 
4
· 3H
 
2
O
25.2.3Chalcanthite
CuSO
 
4
· 5H
 
2
O
25.2.4Boothite
CuSO
 
4
· 7H
 
2
O
25.2.5Dolerophanite
Cu
 
2
(SO
 
4
)O
25.2.6Antlerite
Cu
 
3
(SO
 
4
)(OH)
 
4
25.2.7Brochantite
Cu
 
4
(SO
 
4
)(OH)
 
6
25.2.8Posnjakite
Cu
 
4
(SO
 
4
)(OH)
 
6
· H
 
2
O
25.2.9Langite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
25.2.10Wroewolfeite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
25.2.11Kröhnkite
Na
 
2
Cu(SO
 
4
)
 
2
· 2H
 
2
O
25.2.12Natrochalcite
NaCu
 
2
(SO
 
4
)
 
2
(OH) · 2H
 
2
O
25.2.13Piypite
K
 
2
Cu
 
2
(SO
 
4
)
 
2
O
25.2.14Fedotovite
K
 
2
Cu
 
3
(SO
 
4
)
 
3
O
25.2.15Cyanochroite
K
 
2
Cu(SO
 
4
)
 
2
· 6H
 
2
O
25.2.16Euchlorine
KNaCu
 
3
(SO
 
4
)
 
3
O
25.2.17Devilline
CaCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
25.2.18Leightonite
K
 
2
Ca
 
2
Cu(SO
 
4
)
 
4
· 2H
 
2
O
25.2.19Chalcoalumite
CuAl
 
4
(SO
 
4
)(OH)
 
12
· 3H
 
2
O
25.2.20Cyanotrichite
Cu
 
4
Al
 
2
(SO
 
4
)(OH)
 
12
· 2H
 
2
O
25.2.21Woodwardite
Cu
 
1-x
Al
 
x
(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
25.2.22Campigliaite
Mn
2+
 
Cu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
25.2.23Guildite
CuFe
3+
 
(SO
 
4
)
 
2
(OH) · 4H
 
2
O
25.2.24Ransomite
CuFe
 
2
(SO
 
4
)
 
4
· 6H
 
2
O
25.2.26Klyuchevskite
K
 
3
Cu
 
3
(Fe
3+
 
,Al)(SO
 
4
)
 
4
O
 
2
25.2.27Poitevinite
(Cu,Fe,Zn)SO
 
4
· H
 
2
O
25.2.28Argentojarosite
AgFe
3+
3
(SO
 
4
)
 
2
(OH)
 
6

Other Names for Chalcocyanite

Synonyms:
HydrocyanHydrocyaniteHydrokyaniteIdrociano
Other Languages:
German:Chalcocyanit
Chalkocyanit
Hydrocyanit
Hydrokyanit
Russian:Халькоцианит
Simplified Chinese:水蓝晶石
Spanish:Chalcocyanita
Hydrocyanita
Hydrokyanita

Other Information

Other Information:Extremely hygroscopic. Readily soluble in water. Turns blue on exposure and may crumble to a powder of chalcanthite.
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 Chalcocyanite

Reference List:

- +
Scacchi (1873) Reale accademia delle scienze fisische e matematiche, Att., Naples: 5: 26 (as Idrociano).

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 912.

Posnjak and Tunell (1929) American Journal of Science: 18: 27.

Zambonini, Ferruccio (1935) Mineralogia Vesuviana, second edition with Quercigh, 463 pp., Naples: 158.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 429-430.

Wildner, M. and Giester, G. (1988) Crystal structure refinements of synthetic chalcocyanite (CuSO4) and zincosite (ZnSO4). Mineralogy and Petrology: 39: 201-209.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2003) Handbook of Mineralogy, Volume V. Borates, Carbonates, Sulfates. Mineral Data Publishing, Tucson, AZ, 813pp.: 129.

Internet Links for Chalcocyanite

Search Engines:
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  • External Links:
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  • Look for Chalcocyanite on Athena Mineralogy
  • Look for Chalcocyanite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Chalcocyanite details from Handbook of Mineralogy (PDF)
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  • Localities for Chalcocyanite

    The 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. ? 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.
    Bulgaria
     
    • Plovdiv Oblast
      • Plovdiv
    Atanassova, R. & Kerestedjian, T. (2009): Efflorescent minerals from the metallurgical waste heaps of the KCM non-ferrous metal smelter, Plovdiv, Bulgaria. Geochemistry, Mineralogy and Petrology, 47, 51-63.
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Katanga
    Johari, Umba Kyamitala
      • Lake Mweru
    Haest, M., Muchez, P., Dewaele, S., Boyce, A.J., von Quadt, A., and Schneider, J. (2009): Mineralium Deposita 44, 505-522.
    El Salvador
     
    • Sonsonate Department
    Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 36
    Germany
     
    • Thuringia
      • Gera
        • Ronneburg U deposit
    T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 429, 552, 571.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
            • Northern Breakthrough (North Breach)
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
              • Second scoria cone
    Bykova E Y, Berlepsch P, Kartashov P M, Brugger J, Armbruster T, Criddle A J (1998) Vergasovaite Cu3O[(Mo,S)O4][SO4], a new copper-oxy-molybdate-sulfate from Kamchatka, Schweizerische Mineralogische und Petrographische Mitteilungen, 78, 479-488
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
    Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    USA
     
    • Nevada
      • White Pine Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
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