Devilline Mineral Data

Devilline Mineral Data +

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General Devilline Information

Chemical Formula:

CaCu4(SO4)2(OH)6·3(H2O)

Composition:

Molecular Weight = 642.48 gm

Calcium 6.24 % Ca 8.73 % CaO

Copper 39.56 % Cu 44.54 % Cu₂O

Hydrogen 1.88 % H 16.82 % H₂O

Sulfur 9.98 % S 24.92 % SO₃

Oxygen 42.33 % O

______ ______

100.00 % 95.02 % = TOTAL OXIDE

Empirical Formula:

CaCu₄(OH)₆(SO₄)₂·3(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1864

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named after the French chemist, H. E. S. C. Deville (1818-1881). Named from its occurrence at Herrengrund, north of Neusohl, in Slovakia of Czechoslovakia.

Synonym:

Herrengrundite

ICSD 2764

PDF 35-561

Devilline Image

Images:

Devilline Malachite

Comments: Blue crystals of devilline on green, botryoidal malachite.
Location: Spania Dolina (Herrengrund), Slovakia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Devilline

Comments: Laminar crystals of blue devilline on matrix..
Location: Spania Dolina (ex-Herrengrund) Bansk? Bystrica Slovak Republic. Scale: Specimen size: 6.9 x 3.3 x 5.7 cm.
© Fabre Minerals

Devilline Crystallography

Axial Ratios:

a:b:c =3.4013:1:3.6164

Cell Dimensions:

a = 20.867, b = 6.135, c = 22.187, Z = 8; beta = 102.73° V = 2,770.54 Den(Calc)= 3.08

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 10.22(1), 5.099(0.95), 3.392(0.65),

Crystal Structure:

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Sabelli C , Zanazzi P F , Acta Crystallographica, Section B , 28 (1972) p.1182-1189, The crystal structre of devillite, Locality: Herrengrund, Hungary, Note: z-coordinate of Cu7 altered to match reported bond lengths

Physical Properties of Devilline

Cleavage:

[001] Perfect, [110] Distinct

Color:

Blue, Blue green, Blue white, White, Dark green.

Density:

3.1 - 3.13, Average = 3.11

Diaphaniety:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Spherical - Spherical, rounded aggregates.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2.5 - Finger Nail

Luster:

Vitreous - Pearly

Streak:

light green

Optical Properties of Devilline

Gladstone-Dale:

CI meas= 0.095 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.084 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.205,KPDmeas= 0.2027,KC= 0.2239

Optical Data:

Biaxial (-), a=1.585, b=1.649, g=1.66, bire=0.0750, 2V(Calc)=42, 2V(Meas)=39.

Pleochroism (x):

pale green.

Pleochroism (y):

green.

Pleochroism (z):

green.

Calculated Properties of Devilline

Electron Density:

r_electron=3.03 gm/cc
note: r_Devilline=3.08 gm/cc.

Fermion Index

Fermion Index = 0.00103
Boson Index = 0.99897

Photoelectric:

PE_Devilline= 18.38 barns/electron
U=PE_Devilline x r_electron= 55.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Devilline is Not Radioactive

Devilline Classification

Dana Class:

31.6.1.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.6)where (A+ B++)5 (XO4)2 Zq·x(H2O)

(31.6.1)Dana Group

31.6.1.1 Devilline CaCu4(SO4)2(OH)6·3(H2O) P 2₁/c 2/m

31.6.1.2 Lautenthalite PbCu4(OH)6(SO4)2·3(H2O) P 2₁/c 2/m

Strunz Class:

VI/D.19-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. Cations of medium and very big size

VI/D.19 - Devilline - Serperite - Rapidcreekite series

VI/D.19-05 Niedermayrite! Cu4Cd(SO4)2(OH)6·4(H2O) P 2₁/m 2/m

VI/D.19-10 Devilline CaCu4(SO4)2(OH)6·3(H2O) P 2₁/c 2/m

VI/D.19-20 Serpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) C 2/c 2/m

VI/D.19-30 Orthoserpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) P ca2₁ mm2

VI/D.19-32 Lautenthalite PbCu4(OH)6(SO4)2·3(H2O) P 2₁/c 2/m

VI/D.19-35 Arzrunite Cu4Pb2SO4(OH)4Cl6·2(H2O) Unk Ortho

VI/D.19-40 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7(H2O) Unk Ortho

VI/D.19-50 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m

Other Devilline Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Devilline

CaCu4(SO4)2(OH)6·3(H2O)
Dana No: 31.6.1.1 Strunz No: VI/D.19-10
Locality:

Notes: