Klyuchevskite-Duplicate Mineral Data

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.

Name Pronunciation:

Klyuchevskite-Duplicate + Pronunciation

Synonym:

Duplicate (see 28-4-6-1)

Klyuchevskite-Duplicate Image

Images:

Klyuchevskite Klyuchevskite-Duplicate

Comments: Clusters of dark green radiating prismatic klyuchevskite crystals associated with langbeinite, co-type sample. Klyuchevskite-duplicate is the same mineral with different Dana numbers.
Location: Yadevitaya fumarole, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

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:

Monoclinic Space 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

Diaphaneity:

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
Ncalc = 1.58 - 1.61

Optical Data:

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

Calculated Properties of Klyuchevskite-Duplicate

Electron Density:

Bulk Density (Electron Density)=2.98 gm/cc
note: Specific Gravity of Klyuchevskite-Duplicate =3.08 gm/cc.

Fermion Index:

Fermion Index = 0.002946345
Boson Index = 0.997053655

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)
Concentration of Klyuchevskite-Duplicate per GRapi unit = 0.48 (%)

Estimated Radioactivity from Klyuchevskite-Duplicate - barely detectable

Klyuchevskite-Duplicate Classification

Dana Class:

30.04.01.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.04)Dana Type

(30.04.01)Dana Group

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

Strunz Class:

07.BC.45 07 - SULFATES (SELENATES, TELLURATES)

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

07.BC -With medium-sized and large cations

07.BC.45 Alumoklyuchevskite K3Cu3AlO2(SO4)4 I2 2

07.BC.45 Klyuchevskite-Duplicate K3Cu3FeO2(SO4)4 I2/m, Im, or I2 Mono

07.BC.45 Klyuchevskite K3Cu3(Fe,Al)O2(SO4)4 Unk. 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 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Klyuchevskite-Duplicate

K3Cu3Fe+++O2(SO4)4
Dana No: 30.04.01.01 Strunz No: 07.BC.45
Locality:

Notes:

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