Chalcocyanite Mineral Data

General Chalcocyanite Information

Chemical Formula:

CuSO4

Composition:

Molecular Weight = 159.61 gm

Copper 39.81 % Cu 49.84 % CuO

Sulfur 20.09 % S 50.16 % SO₃

Oxygen 40.10 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu(SO₄)

Environment:

Sublimates near volcanic fumaroles.

IMA Status:

Valid Species (Pre-IMA) 1873

Locality:

Mount Vesuvius, Campania, Italy. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for copper and azure-blue, in allusion to the composition and color change caused by hydration.

Synonym:

Chalcokyanite

Hydrocyanite

ICSD 71017

PDF 15-775

Chalcocyanite Image

Images:

Click Here for Larger Chalcocyanite Image

Chalcocyanite Chalcanthite

Comments: White to pale bluish chalcocyanite with darker bluish chalcanthite. The mineral is hygroscopic and must be stored in a closed box.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Chalcocyanite Crystallography

Axial Ratios:

a:b:c =0.7973:1:0.5744

Cell Dimensions:

a = 6.69, b = 8.39, c = 4.82, Z = 4; V = 270.54 Den(Calc)= 3.92

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.549(1), 2.62(0.95), 4.187(0.75),

Forms:

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Forms: ( 2 1 0) ( 0 1 1) ( 1 1 0) ( 1 1 2) ( 1 0 2) ( 1 0 0) ( 1 0 1)

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Crystal Structure:

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

Physical Properties of Chalcocyanite

Color:

Blue, Brown, Green, Yellow, Yellow brown.

Density:

3.65

Diaphaneity:

Transparent to Translucent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Chalcocyanite

Gladstone-Dale:

CI meas= -0.156 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.076 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1867,KPDmeas= 0.2005,KC= 0.1735
Ncalc = 1.63 - 1.68

Optical Data:

Biaxial (-), a=1.724, b=1.733, g=1.739, bire=0.0150, 2V(Calc)=78, 2V(Meas)=70.

Calculated Properties of Chalcocyanite

Electron Density:

Bulk Density (Electron Density)=3.78 gm/cc
note: Specific Gravity of Chalcocyanite =3.92 gm/cc.

Fermion Index:

Fermion Index = 0.0016992327
Boson Index = 0.9983007673

Photoelectric:

PE_{Chalcocyanite}= 18.63 barns/electron
U=PE_{Chalcocyanite} x rElectron Density= 70.45 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chalcocyanite is Not Radioactive

Chalcocyanite Classification

Dana Class:

28.03.03.01 (28)Anhydrous Acid and Sulfates

(28.03)(A++) XO4

(28.03.03)Dana Group

28.03.03.01 Chalcocyanite CuSO4 Pmnb 2/m 2/m 2/m

Strunz Class:

07.AB.10 07 - SULFATES (SELENATES, TELLURATES)

07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O

07.AB -With medium-sized cations

07.AB.10 Chalcocyanite CuSO4 Pmnb 2/m 2/m 2/m

07.AB.10 Zincosite* ZnSO4 Unk Ortho

Other Chalcocyanite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Chalcocyanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Chalcocyanite Specimen Label here :

Chalcocyanite

CuSO4
Dana No: 28.03.03.01 Strunz No: 07.AB.10
Locality:

Notes: