Chalcocyanite Mineral Data

Chalcocyanite Mineral Data

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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)

IMA Status:

Valid Species (Pre-IMA) 1873

Locality:

Link to MinDat.org Location Data.

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

Diaphaniety:

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

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:

r_electron=3.78 gm/cc
note: r_{Chalcocyanite}=3.92 gm/cc.

Fermion Index

Fermion Index = 0.00169
Boson Index = 0.99831

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chalcocyanite is Not Radioactive

Chalcocyanite Classification

Dana Class:

28.3.3.1 (28)Anhydrous Acid and Sulfates

(28.3)(A++) XO4

(28.3.3)Dana Group

28.3.3.1 Chalcocyanite CuSO4 Pmnb 2/m 2/m 2/m

Strunz Class:

VI/A.01-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/A - Waterfree sulfates [SO4]2- without unfamiliar anions. cations of medium size

VI/A.01 - Chalcocyanite - Zincocite ? series

VI/A.01-10 Chalcocyanite CuSO4 Pmnb 2/m 2/m 2/m

VI/A.01-20 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Chalcocyanite

CuSO4
Dana No: 28.3.3.1 Strunz No: VI/A.01-10
Locality:

Notes: