Kimzeyite Mineral Data

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General Kimzeyite Information

Chemical Formula:

Ca3(Zr,Ti)2(Si,Al,Fe+++)3O12

Composition:

Molecular Weight = 564.59 gm

Calcium 21.30 % Ca 29.80 % CaO

Zirconium 24.24 % Zr 32.74 % ZrO₂

Titanium 4.24 % Ti 7.07 % TiO₂

Aluminum 4.30 % Al 8.13 % Al₂O₃

Iron 2.97 % Fe 4.24 % Fe₂O₃

Silicon 8.95 % Si 19.16 % SiO₂

Oxygen 34.01 % O

______ ______

100.00 % 101.13 % = TOTAL OXIDE

Empirical Formula:

Ca₃Zr_1.5Ti_0.5Si_1.8Al_0.9Fe³⁺_0.3O₁₂

Environment:

Ultra-mafic lamprphyre dikes and carbonatite intrusive rocks.

IMA Status:

Approved IMA 1961

Locality:

Occurs in the carbonatite at the Kimzey family farm, Magnet Cove, Arkansas. Link to MinDat.org Location Data.

Name Origin:

Named for the Kimzey family, long associated with the mineralogy at Magnet Cove, Arkansas.

Name Pronunciation:

Kimzeyite + Pronunciation

Synonym:

ICSD 100258

PDF 13-130

Kimzeyite Image

Images:

Kimzeyite

Comments: Black isometric crystal of kimzeyite garnet.
Location: Kimzey pit, Magnet Cove, Hot Spring County, Arkansas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Kimzeyite Crystallography

Cell Dimensions:

a = 12.46, Z = 8; V = 1,934.44 Den(Calc)= 3.88

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d

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

By Intensity(I/I_o): 1.667(1), 2.539(0.9), 2.79(0.8),

Forms:

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Forms: ( 2 1 1)

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Crystal Structure:

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Munno R , Rossi G , Tadini C , American Mineralogist , 65 (1980) p.188-191, Crystal chemistry of kimzeyite from Stomboli, Aeolian Islands, Italy

View Additional jPOWD Structure files for Kimzeyite
[1] [2]

Physical Properties of Kimzeyite

Cleavage:

None

Color:

Dark brown.

Density:

Diaphaneity:

Transparent to Subopaque

Hardness:

7 - Quartz

Luster:

Vitreous (Glassy)

Streak:

light brown

Optical Properties of Kimzeyite

Gladstone-Dale:

CI meas= -0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2423,KPDmeas= 0.235,KC= 0.2295
Ncalc = 1.89 - 1.92

Optical Data:

Isotropic, n=1.94.

Calculated Properties of Kimzeyite

Electron Density:

Bulk Density (Electron Density)=3.85 gm/cc
note: Specific Gravity of Kimzeyite =4.00 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Kimzeyite= 37.14 barns/electron
U=PE_Kimzeyite x rElectron Density= 142.98 barns/cc.

Radioactivity:

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

Kimzeyite Classification

Dana Class:

51.04.03c.02 (51)Nesosilicate Insular SiO4 Groups Only

(51.04)with cations in [6] and >[6] coordination

(51.04.03c)Garnet group (Schorlomite - Kimzeyite series)

51.04.03c.01 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m

51.04.03c.02 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m

51.04.03c.03 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m

Strunz Class:

09.AD.25 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AD -Nesosilicates without additional anions;

09.AD.25 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m

09.AD.25 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 4₁/acd 4/m 2/m 2/m

09.AD.25 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m

09.AD.25 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m

09.AD.25 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m

09.AD.25 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m

09.AD.25 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m

09.AD.25 Holtstamite! Ca3(Al,Mn)2(SiO4)2(OH)4 I 4₁/acd 4/m 2/m 2/m

Other Kimzeyite Information

References:

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

See Also:

Links to other databases for Kimzeyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineral and Gemstone Kingdom
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Kimzeyite

Ca3(Zr,Ti)2(Si,Al,Fe+++)3O12
Dana No: 51.04.03c.02 Strunz No: 09.AD.25
Locality:

Notes: