Koenenite Mineral Data (original) (raw)

General Koenenite Information

Help on Chemical Formula: Chemical Formula:

Na4Mg4Cl12•Mg5Al4(OH)22

Help on Composition: Composition:

Molecular Weight = 1,218.22 gm

Sodium 7.55 % Na 10.18 % Na2O

Magnesium 17.96 % Mg 29.78 % MgO

Aluminum 8.86 % Al 16.74 % Al2O3

Hydrogen 1.82 % H 16.27 % H2O

Chlorine 34.92 % Cl 34.92 % Cl

- % Cl -7.88 % -O=Cl2

Oxygen 28.89 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na4Mg9Cl12Al4(OH)22

Help on Environment: Environment:

Potash mine.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1902

Help on Locality: Locality:

Justus I near Volpriehausen, and elsewhere in Hannover, Germany. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Adolf von Koenen (1837-1915), German geologist of Gottingen, who first found the mineral.

Help on Name Pronunciation: Name Pronunciation:

Koenenite + Pronunciation Say KOENENITE

Help on Synonym: Synonym:

ICSD 22305/6

PDF 43-684

Koenenite Image

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Koenenite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:0.94009

Help on Cell Dimensions: Cell Dimensions:

a = 34.72, c = 32.64, Z = 33; V = 34,075.35 Den(Calc)= 1.96

Help on Crystal System: Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.5(1), 2.34(0.5), 2.85(0.5),

Click Here for Large Koenenite Structure Window Crystal Structure:

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Help on Above

| | Allmann R , Lohse H N , Hellner E , Zeitschrift fur Kristallographie , 126 (1968) p.7-22, Die kristallstruktur des koenenits, eine doppelschichtstruktur mit zwei, inkommensurablen teilgittern, Note: one of two substructures in koenenite | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Koenenite

Help on Cleavage: Cleavage:

{0001} Perfect

Help on Color: Color:

Colorless, Light yellow, Dark red.

Help on Density: Density:

1.98

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Fracture: Fracture:

Flexible - Flexible fragments.

Help on Habit: Habit:

Encrustations - Forms crust-like aggregates on matrix.

Help on Hardness: Hardness:

1.5 - Between Talc and Gypsum

Help on Luster: Luster:

Pearly

Help on Streak: Streak:

white

Optical Properties of Koenenite

Help on Optical Data: Optical Data:

Uniaxial (+), w=1.52, e=1.55, bire=0.0300.

Calculated Properties of Koenenite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=1.95 gm/cc
note: Specific Gravity of Koenenite =1.96 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Help on Photoelectric: Photoelectric:

PEKoenenite = 3.06 barns/electron
U=PEKoenenite x rElectron Density= 5.96 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Koenenite is Not Radioactive

Koenenite Classification

Help on Dana Class: Dana Class:

10.06.02.01 (10)Oxyhalides and Hydroxyhalides

(10.06)where Am Bn (O,OH)p Xq

(10.06.02)Dana Group

10.06.02.01 Koenenite Na4Mg4Cl12•Mg5Al4(OH)22 R 3m 3 2/m

Help on Strunz Class: Strunz Class:

03.BD.25 03 - HALIDES

03.B - Simple Halides, with H2O

03.BD -Simple Halides with H2O and additional OH

03.BD.25 Koenenite Na4Mg4Cl12•Mg5Al4(OH)22 R 3m 3 2/m

Other Koenenite Information

Help on References: References:

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

Help on See Also: See Also:

Links to other databases for Koenenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Koenenite here :
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Print or Cut-and-Paste your Koenenite Specimen Label here :

Koenenite

Na4Mg4Cl12•Mg5Al4(OH)22
Dana No: 10.06.02.01 Strunz No: 03.BD.25
Locality:

Notes: