Macedonite Mineral Data

General Macedonite Information

Chemical Formula:

PbTiO3

Composition:

Molecular Weight = 303.08 gm

Titanium 15.80 % Ti 26.36 % TiO₂

Lead 68.37 % Pb 73.64 % PbO

Oxygen 15.84 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbTiO₃

Environment:

Rare secondary mineral in microcline-quartz syenite pegmatite veins.

IMA Status:

Approved IMA 1971

Locality:

Crni Kamen, near Prilep, Macedonia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Macedonite + Pronunciation

Synonym:

ICSD 61168

PDF 6-452

Macedonite Image

Images:

Macedonite

Comments: B&W image of pseudo-cubic macedonite grains. (AmMin, v56:387).
Location: Accessory mineral in the amazonite-rich, quartz-syenite veins in Crni Kamen near Prilep, Macedonia. Scale: Picture size 100 x.
© American Mineralogist

Macedonite Crystallography

Axial Ratios:

a:c = 1:1.08228

Cell Dimensions:

a = 3.889, c = 4.209, Z = 1; V = 63.66 Den(Calc)= 7.91

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm

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

By Intensity(I/I_o): 2.843(1), 1.603(0.9), 2.728(0.8),

Crystal Structure:

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Glazer A M , Mabud S A , Acta Crystallographica, Section B , 34 (1978) p.1065-1070, Powder profile refinement of lead zirconate titanate at several temperatures., II. Pure PbTiO3, Locality: synthetic, Sample: T = 550 C

Physical Properties of Macedonite

Cleavage:

None

Color:

Black.

Density:

7.82

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous (Glassy)

Streak:

yellow gray

Optical Properties of Macedonite

Dichroism (e):

brownish yellow.

Dichroism (w):

brownish greenish yellow.

Optical Data:

Uniaxial (?).

NCalc= 2.59 - from Gladstone-Dale relationship (KC = 0.2015) where Ncalc=Dcalc*KC+1
NCalc= 2.58 - from Gladstone-Dale relationship (KC = 0.2015) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Very weak.

RL Color:

Grayish white with yellow brown to dark brownish green interanal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Macedonite in Air**
λ	R	∑ R(λ)
470 nm	22.50
490 nm	22.20
510 nm	21.80
530 nm	21.20
546 nm	21.00
570 nm	20.90
589 nm	20.80
610 nm	20.60
630 nm	20.40
650 nm	20.20

**Calculated Relative Intensity Colors of Macedonite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	430%
R

Calculated Properties of Macedonite

Electron Density:

Bulk Density (Electron Density)=6.68 gm/cc
note: Specific Gravity of Macedonite =7.91 gm/cc.

Fermion Index:

Fermion Index = 0.17
Boson Index = 0.83

Photoelectric:

PE_Macedonite=1,245.44 barns/electron
U=PE_Macedonite x rElectron Density=8,321.19 barns/cc.

Radioactivity:

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

Macedonite Classification

Dana Class:

04.03.06.01 (04)Simple Oxides

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

(04.03.06)Dana Group

04.03.06.01 Macedonite PbTiO3 P 4/mmm 4/m 2/m 2/m

Strunz Class:

04.CC.35 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.35 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m

04.CC.35 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m

04.CC.35 Macedonite PbTiO3 P 4/mmm 4/m 2/m 2/m

04.CC.35 Tausonite SrTiO3 P m3m 4/m 3 2/m

Other Macedonite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Macedonite :
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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Print or Cut-and-Paste your Macedonite Specimen Label here :

Macedonite

PbTiO3
Dana No: 04.03.06.01 Strunz No: 04.CC.35
Locality:

Notes: