Klyuchevskite-Duplicate Mineral Data

Klyuchevskite-Duplicate Mineral Data +

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General Klyuchevskite-Duplicate Information

Chemical Formula:

K3Cu3Fe+++O2(SO4)4

Composition:

Molecular Weight = 780.03 gm

Potassium 15.04 % K 18.11 % K₂O

Iron 7.16 % Fe 10.24 % Fe₂O₃

Copper 24.44 % Cu 30.59 % CuO

Sulfur 16.44 % S 41.06 % SO₃

Oxygen 36.92 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₃Cu₃Fe³⁺O₂(SO₄)₄

Environment:

Deposited by fumaroles.

IMA Status:

Approved IMA 1989

Locality:

Great Tolbachik fissure eruption, Kamchatka, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

Duplicate (see 28-4-6-1)

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Klyuchevskite-Duplicate Crystallography

Axial Ratios:

a:b:c =3.7267:1:3.7732

Cell Dimensions:

a = 18.41, b = 4.94, c = 18.64, Z = 4; beta = 101.5° V = 1,661.19 Den(Calc)= 3.12

Crystal System:

MonoclinicSpace Group: I2/m, Im, or I2

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

By Intensity(I/I_o): 9.03(1), 3.76(0.6), 7.2(0.4),3.41(0.3), 4.5(0.3), 3.45(0.2), 3.68(0.2),

Physical Properties of Klyuchevskite-Duplicate

Cleavage:

[???] Perfect

Color:

Green, Gray green, Olive green.

Density:

3 - 3.15, Average = 3.07

Diaphaniety:

Transparent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

3.5 - Copper Penny

Luster:

Sub Metallic

Streak:

greenish

Optical Properties of Klyuchevskite-Duplicate

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1901,KPDmeas= 0.1928,KC= 0.1924

Optical Data:

Biaxial (+), a=1.549, b=1.55, g=1.68, bire=0.1310

Calculated Properties of Klyuchevskite-Duplicate

Electron Density:

r_electron=2.98 gm/cc
note: r_{Klyuchevskite-Duplicate}=3.08 gm/cc.

Fermion Index

Fermion Index = 0.00294
Boson Index = 0.99706

Photoelectric:

PE_{Klyuchevskite-Duplicate}= 15.32 barns/electron
U=PE_{Klyuchevskite-Duplicate} x r_electron= 45.64 barns/cc.

Radioactivity:

GRapi = 210.27 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Klyuchevskite-Duplicate - barely detectable

Klyuchevskite-Duplicate Classification

Dana Class:

30.4.1.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.4)Dana Type

(30.4.1)Dana Group

30.4.1.1 Klyuchevskite-Duplicate K3Cu3FeO2(SO4)4 I2/m, Im, or I2 Mono

Strunz Class:

VI/B.05-50* VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size

VI/B.05 - Fedotovite - Klyuchevskite series

VI/B.05-10 Fedotovite K2Cu3(SO4)3O P 2₁/c 2/m

VI/B.05-20 Chlorothionite K2Cu(SO4)Cl2 P nma 2/m 2/m 2/m

VI/B.05-30 Kamchatkite KCu3OCl(SO4)2 P na2₁ mm2

VI/B.05-40 Piypite K2Cu2(SO4)2O I 4 4

VI/B.05-45 Alumoklyuchevskite K3Cu3AlO2(SO4)4 I2 2

VI/B.05-50 Klyuchevskite K3Cu3(Fe,Al)O2(SO4)4 Unk. Mono

VI/B.05-50* Klyuchevskite-Duplicate K3Cu3FeO2(SO4)4 I2/m, Im, or I2 Mono

Other Klyuchevskite-Duplicate Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Klyuchevskite-Duplicate :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Klyuchevskite-Duplicate Specimen Label here :

Klyuchevskite-Duplicate

K3Cu3Fe+++O2(SO4)4
Dana No: 30.4.1.1 Strunz No: VI/B.05-50*
Locality:

Notes: