Clinoungemachite Mineral Data

Clinoungemachite Mineral Data

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General Clinoungemachite Information

Chemical Formula:

K3Na9Fe+++(SO4)6(OH)3·9(H2O) ?

Composition:

Molecular Weight = 1,169.59 gm

Potassium 10.03 % K 12.08 % K₂O

Sodium 17.69 % Na 23.85 % Na₂O

Iron 4.77 % Fe 6.83 % Fe₂O₃

Hydrogen 1.81 % H 16.17 % H₂O

Sulfur 16.45 % S 41.07 % SO₃

Oxygen 49.25 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₃Na₉Fe³⁺(SO₄)₆(OH)₃·9(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1938

Locality:

Chuquicamata, Chile. Link to MinDat.org Location Data.

Name Origin:

Named its crystal form and for Henri-Leon Ungemach (1880-1936), Belgian crystallographer.

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Clinoungemachite Crystallography

Axial Ratios:

a:b:c =0.4774:1:0.7508

Cell Dimensions:

a = 7.44, b = 15.583, c = 11.7, Z = 2; beta = 110.18° V = 1,273.20 Den(Calc)= 3.05

Crystal System:

MonoclinicSpace Group: (pseudo-HEX-R)

Physical Properties of Clinoungemachite

Color:

Colorless, White, Light yellow.

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Clinoungemachite

Optical Data:

NCalc= 1.67 - from Gladstone-Dale relationship (KC = 0.2182) where Ncalc=Dcalc*KC+1

Calculated Properties of Clinoungemachite

Electron Density:

r_electron=3.06 gm/cc
note: r_{Clinoungemachite}=3.05 gm/cc.

Fermion Index

Fermion Index = 0.00249
Boson Index = 0.99751

Photoelectric:

PE_{Clinoungemachite}= 3.69 barns/electron
U=PE_{Clinoungemachite} x r_electron= 11.29 barns/cc.

Radioactivity:

GRapi = 145.26 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Clinoungemachite - barely detectable

Clinoungemachite Classification

Dana Class:

31.7.3.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.7)where (A+ B++)2 (XO4) Zq·x(H2O)

(31.7.3)Dana Group

31.7.3.1 Clinoungemachite K3Na9Fe(SO4)6(OH)3·9(H2O)? (pseudo-HEX-R) Mono

Strunz Class:

VI/D.16-30 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/D.16 - Darapskite - Humberstonite series

VI/D.16-10 Darapskite Na3(SO4)(NO3)·(H2O) P 2₁/m 2/m

VI/D.16-20 Ungemachite K3Na8Fe(SO4)6(NO3)2·6(H2O) R 3 3

VI/D.16-30 Clinoungemachite K3Na9Fe(SO4)6(OH)3·9(H2O)? (pseudo-HEX-R) Mono

VI/D.16-40 Humberstonite K3Na7Mg2(SO4)6(NO3)2·6(H2O) R 3 3

VI/D.16-50 Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12·12(H2O) P 3c1 3 2/m

VI/D.16-60 Carlosruizite K6(Na,K)4Na6Mg10(SeO4)12(IO3)12·12(H2O) P 3c1 3 2/m

VI/D.16-70 Georgeericksenite! Na6CaMg(IO3)6(CrO4)2·12(H2O) C 2/c 2/m

Other Clinoungemachite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Clinoungemachite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Clinoungemachite

K3Na9Fe+++(SO4)6(OH)3·9(H2O) ?
Dana No: 31.7.3.1 Strunz No: VI/D.16-30
Locality:

Notes: