Kuzelite Mineral Data

General Kuzelite Information

Chemical Formula:

Ca4Al2.4(OH)12.8(SO4)•6(H2O)

Composition:

Molecular Weight = 622.52 gm

Calcium 25.75 % Ca 36.03 % CaO

Aluminum 8.67 % Al 16.38 % Al₂O₃

Hydrogen 3.89 % H 34.73 % H₂O

Sulfur 5.15 % S 12.86 % SO₃

Oxygen 56.54 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₄Al₂(OH)₁₂(SO₄)•6(H₂O)

Environment:

In carbonaceous xenoliths in a Tertiary basalt. Related to hydrocalumite.

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

The Zeilberg quarry, Marolsweisach, northern Bavaria, Germany. Link to MinDat.org Location Data.

Name Origin:

For Prof. Hans Jurgen Kuzel of Erlangen, Germany. who first synthesized th compound.

Name Pronunciation:

Kuzelite

Synonym:

ICSD 100138

IMA1996-053

PDF 45-158

Kuzelite Crystallography

Axial Ratios:

a:c = 1:9.31597

Cell Dimensions:

a = 5.76, c = 53.66, Z = 3; V = 1,541.79 Den(Calc)= 2.01

Crystal System:

Trigonal - Pyramidal H-M Symbol (3) Space Group: R 3

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

By Intensity(I/I_o): 8.972(1), 4.476(0.7), 2.362(0.4),

Physical Properties of Kuzelite

Color:

White.

Density:

1.99 - 2.02, Average = 2

Diaphaneity:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kuzelite

Gladstone-Dale:

CI meas= 0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.246,KPDmeas= 0.2466,KC= 0.2504
Ncalc = 1.5 - 1.51

Optical Data:

Uniaxial (-), e=1.485, w=1.504, bire=0.0190.

Calculated Properties of Kuzelite

Electron Density:

Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Kuzelite =2.01 gm/cc.

Fermion Index:

Fermion Index = 0.0010112125
Boson Index = 0.9989887875

Photoelectric:

PE_Kuzelite= 3.72 barns/electron
U=PE_Kuzelite x rElectron Density= 7.71 barns/cc.

Radioactivity:

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

Kuzelite Classification

Dana Class:

06.04.12.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.04)containing multiple cations

(06.04.12)Dana Group

06.04.12.01 Kuzelite! Ca4Al2.4(OH)12.8(SO4)•6(H2O) R 3 3

Strunz Class:

04.FL.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FL -Hydroxides with H2O ï¿½ (OH); sheets of edge-sharing octahedra

04.FL.15 Kuzelite! Ca4Al2.4(OH)12.8(SO4)•6(H2O) R 3 3

Other Kuzelite Information

References:

NAME( MinRec) PHYS. PROP.(Min.Mag.,Vol.61,p735,1997) OPTIC PROP.(MinRec)

See Also:

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

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

Kuzelite

Ca4Al2.4(OH)12.8(SO4)•6(H2O)
Dana No: 06.04.12.01 Strunz No: 04.FL.15
Locality:

Notes:

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