Perovskite Mineral Data

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General Perovskite Information

Chemical Formula:

CaTiO3

Composition:

Molecular Weight = 135.96 gm

Calcium 29.48 % Ca 41.25 % CaO

Titanium 35.22 % Ti 58.75 % TiO₂

Oxygen 35.30 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaTiO₃

Environment:

Common in chlorite, talc, or serpentine rocks.

IMA Status:

Valid Species (Pre-IMA) 1839

Locality:

Achmatovsk near Kussinsk in the Zlatoust district, Ural mountans, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after the Russian mineralogist, L. A. Perovski (1792-1856).

Name Pronunciation:

Perovskite + Pronunciation

Synonym:

Dysanalyte (Nb)

ICSD 37263

Knopite (Ce)

PDF 42-423

Perofskite

Uhligite - perovskite or zirkelite (?)

Perovskite Image

Images:

Perovskite Clinochlore

Comments: Square, opaque perovskite on green clinochlore. Very brilliant and with large crystals (2 x 1.5 cm.).
Location: Ilmen Mountains. Chelyabinsk, Urals, Russia. Scale: 6 x 4.5 cm.
© Fabre Minerals

Images:

Perovskite Sodalite

Comments: Clear crystals of sodalite with hoppered perovskite on matrix.
Location: Udersdorf, Rhineland-Palatinate, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Perovskite

Comments: Cubic perovskite (Type Specimen 1999-0073), with original label of G. Rose.
Location: Achmatowsk mine, Achmatowsk, Slatoust, Ural, Russia. Scale: Picture Size 4 x 2.5 cm.
© German Type Specimen Catalogue

Perovskite Crystallography

Axial Ratios:

a:b:c =0.7118:1:0.7039

Cell Dimensions:

a = 5.441, b = 7.644, c = 5.381, Z = 4; V = 223.80 Den(Calc)= 4.03

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 2.7(1), 1.91(0.5), 2.72(0.4),

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Forms: ( 1 0 1) ( 0 1 0) ( 1 1 1) ( 0 1 1) ( 1 0 0) ( 0 0 1)

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Crystal Structure:

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Yamanaka T , Hirai M , Komatsu Y , American Mineralogist , 87 (2002) p.1183-1189, Structure change of Ca1-xSrxTiO3 perovskite with composition and pressure, Sample: CaTiO3, x = 0.0

View Additional jPOWD Structure files for Perovskite
[1] [2] [3] [4] [5] [6] [7] [8]

Physical Properties of Perovskite

Cleavage:

{100} Good, {010} Good, {001} Good

Color:

Black, Reddish brown, Pale yellow, Yellowish orange.

Density:

Diaphaneity:

Transparent to translucent to opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

5.5 - Knife Blade

Luminescence:

Non-fluorescent.

Luster:

Sub Metallic

Streak:

grayish white

Optical Properties of Perovskite

Gladstone-Dale:

CI meas= -0.055 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3325,KPDmeas= 0.335,KC= 0.3175
Ncalc = 2.27 - 2.28

Optical Data:

Biaxial (+), a=2.3, b=2.34, g=2.38, bire=0.0800, 2V(Calc)=88, 2V(Meas)=90. Dispersion r > v.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

RL Color:

Dark bluish gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Perovskite in Air**
λ	R	∑ R(λ)
400 nm	19.20
420 nm	18.80
440 nm	18.40
460 nm	18.00
480 nm	17.60
500 nm	17.30
520 nm	17.00
540 nm	16.80
560 nm	16.60
580 nm	16.40
600 nm	16.20
620 nm	16.10
640 nm	16.00
660 nm	16.00
680 nm	15.90
700 nm	15.90

**Calculated Relative Intensity Colors of Perovskite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	540%
R

Calculated Properties of Perovskite

Electron Density:

Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Perovskite =4.03 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Perovskite= 9.49 barns/electron
U=PE_Perovskite x rElectron Density= 37.13 barns/cc.

Radioactivity:

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

Perovskite Classification

Dana Class:

04.03.03.01 (04)Simple Oxides

(04.03)with a cation charge of 3+ (A+++2 O3)

(04.03.03)Perovskite Group

04.03.03.01 Perovskite CaTiO3 P nma 2/m 2/m 2/m

04.03.03.02 Latrappite (Ca,Na)(Nb,Ti,Fe)O3 Pcmn 2/m 2/m 2/m

04.03.03.03 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m

04.03.03.04 Lueshite NaNbO3 P 222₁ 2 2 2

04.03.03.05 Tausonite SrTiO3 P m3m 4/m 3 2/m

04.03.03.06 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m

04.03.03.07 Barioperovskite! BaTiO3 Amm2 mm2

04.03.03.08 Lakargiite! CaZrO3 P nma 2/m 2/m 2/m

Strunz Class:

04.CC.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.30 Natroniobite NaNbO3 Mono

04.CC.30 Latrappite (Ca,Na)(Nb,Ti,Fe)O3 Pcmn 2/m 2/m 2/m

04.CC.30 Lueshite NaNbO3 P 222₁ 2 2 2

04.CC.30 Perovskite CaTiO3 P nma 2/m 2/m 2/m

04.CC.30 Barioperovskite! BaTiO3 Amm2 mm2

04.CC.30 Lakargiite! CaZrO3 P nma 2/m 2/m 2/m

Other Perovskite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Heinrich65, AntBidBlaNic3)

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

Perovskite

CaTiO3
Dana No: 04.03.03.01 Strunz No: 04.CC.30
Locality:

Notes: