Mitscherlichite Mineral Data

Mitscherlichite Mineral Data +

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General Mitscherlichite Information

Chemical Formula:

K2CuCl4·2(H2O)

Composition:

Molecular Weight = 319.58 gm

Potassium 24.47 % K 29.47 % K₂O

Copper 19.88 % Cu 24.89 % CuO

Hydrogen 1.26 % H 11.27 % H₂O

Chlorine 44.37 % Cl 44.37 % Cl

- % Cl -10.01 % -O=Cl₂

Oxygen 10.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₂CuCl₄·2(H₂O)

Environment:

Saline sublimations.

IMA Status:

Valid Species (Pre-IMA) 1925

Locality:

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

Synonym:

ICSD 16052

PDF 23-478

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Mitscherlichite Crystallography

Axial Ratios:

a:c = 1:1.05771

Cell Dimensions:

a = 7.45, c = 7.88, Z = 2; V = 437.36 Den(Calc)= 2.43

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4₁/mnm

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

By Intensity(I/I_o): 2.64(1), 2.71(0.95), 5.42(0.7),

Crystal Structure:

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Chrobak L , Zeitschrift fur Kristallographie , 88 (1934) p.35-47, Quantitative spectrometric studies of ammonium and of potassium cupric chloride, dihydrate (NH4)2CuCl4*2H2O and K2CuCl4*2H2O, Locality: synthetic

Physical Properties of Mitscherlichite

Color:

Green, Green blue.

Density:

2.418

Diaphaniety:

Transparent to translucent

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Optical Properties of Mitscherlichite

Gladstone-Dale:

CI meas= 0.071 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.075 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2576,KPDmeas= 0.2589,KC= 0.2786

Optical Data:

Uniaxial (-), e=1.615, w=1.637, bire=0.0220.

Calculated Properties of Mitscherlichite

Electron Density:

r_electron=2.35 gm/cc
note: r_{Mitscherlichite}=2.42 gm/cc.

Fermion Index

Fermion Index = 0.00007
Boson Index = 0.99993

Photoelectric:

PE_{Mitscherlichite}= 14.06 barns/electron
U=PE_{Mitscherlichite} x r_electron= 32.97 barns/cc.

Radioactivity:

GRapi = 342.46 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Mitscherlichite - barely detectable

Mitscherlichite Classification

Dana Class:

11.3.2.1 (11)Halide Complexes; Alumino-fluorides

(11.3)where (A)m B (X)4 · x(H2O)

(11.3.2)Dana Group

11.3.2.1 Mitscherlichite K2CuCl4·2(H2O) P 4₁/mnm 4/m 2/m 2/m

Strunz Class:

III/C.07-10 III - Halogenides

III/C - Double halogenides with water, Chlorides

III/C.07 - Rinneite - Kremersite series

III/C.07-10 Mitscherlichite K2CuCl4·2(H2O) P 4₁/mnm 4/m 2/m 2/m

III/C.07-20 Douglasite K2FeCl4·2(H2O) Unk. Mono

III/C.07-30 Erythrosiderite K2FeCl5·(H2O) P nma 2/m 2/m 2/m

III/C.07-40 Kremersite (NH4,K)2FeCl5·(H2O) Pmnb 2/m 2/m 2/m

Other Mitscherlichite Information

References:

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

See Also:

Links to other databases for Mitscherlichite :
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 -École des Mines de Paris

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Mitscherlichite

K2CuCl4·2(H2O)
Dana No: 11.3.2.1 Strunz No: III/C.07-10
Locality:

Notes: