Kimzeyite Mineral Data

Kimzeyite Mineral Data +

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.

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:

Diaphaniety:

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

Optical Data:

Isotropic, n=1.94.

Calculated Properties of Kimzeyite

Electron Density:

r_electron=3.85 gm/cc
note: r_Kimzeyite=4.00 gm/cc.

Fermion Index

Fermion Index = 0.03793
Boson Index = 0.96207

Photoelectric:

PE_Kimzeyite= 37.14 barns/electron
U=PE_Kimzeyite x r_electron= 142.98 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kimzeyite is Not Radioactive

Kimzeyite Classification

Dana Class:

51.4.3c.2 (51)Nesosilicate Insular SiO4 Groups Only

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

(51.4.3c)Garnet group (Schorlomite - Kimzeyite series)

51.4.3c.1 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m

51.4.3c.2 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m

51.4.3c.3 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m

Strunz Class:

VIII/A.08-150 VIII - Silicates

VIII/A - Nesosilicates with [SiO4]4-groups, cations of octahedral and cubic orientation [8+6]

VIII/A.08 - Garnet group, Pyrope - Henritermierite

VIII/A.08-10 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-20 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-30 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-40 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-50 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-60 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-70 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-80 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m

VIII/A.08-90 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m

VIII/A.08-100 Hydrougrandite? (Ca,Mg,Fe)3(Fe,Al)2(SiO4)3-x(OH)4x I a3d 4/m 3 2/m

VIII/A.08-110 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-120 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m

VIII/A.08-125 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m

VIII/A.08-130 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-138 Yamatoite! (Mn,Ca)3(V,Al)2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-140 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m

VIII/A.08-150 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m

VIII/A.08-160 Henritermierite Ca3(Mn,Al)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)

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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: 51.4.3c.2 Strunz No: VIII/A.08-150
Locality:

Notes: