Clinoungemachite Mineral Data

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 (1879-1936), French mineralogist and crystallographer. Secretary of the French Society of Mineralogy from 1919 to 1934.

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:

Monoclinic Space Group: (pseudo-HEX-R)

Physical Properties of Clinoungemachite

Color:

Colorless, White, Light yellow.

Diaphaneity:

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:

Bulk Density (Electron Density)=3.06 gm/cc
note: Specific Gravity of Clinoungemachite =3.05 gm/cc.

Fermion Index:

Fermion Index = 0.002497152
Boson Index = 0.997502848

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)
Concentration of Clinoungemachite per GRapi unit = 0.69 (%)

Estimated Radioactivity from Clinoungemachite - barely detectable

Clinoungemachite Classification

Dana Class:

31.07.03.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.07)where (A+ B++)2 (XO4) Zq�x(H2O)

(31.07.03)Dana Group

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

Strunz Class:

07.DG.10 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3

07.DG.10 Clinoungemachite K3Na9Fe(SO4)6(OH)3•9(H2O)? (pseudo-HEX-R) Mono

07.DG.10 Humberstonite K3Na7Mg2(SO4)6(NO3)2•6(H2O) R 3 3

07.DG.10 Ungemachite K3Na8Fe(SO4)6(NO3)2•6(H2O) R 3 3

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 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Clinoungemachite

K3Na9Fe+++(SO4)6(OH)3•9(H2O) ?
Dana No: 31.07.03.01 Strunz No: 07.DG.10
Locality:

Notes: