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Macedonite Mineral Data
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General Macedonite Information
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 Chemical Formula: |
PbTiO3 |
| Composition: |
Molecular Weight = 303.08 gm |
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Titanium 15.80 % Ti 26.36 % TiO2 |
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Lead 68.37 % Pb 73.64 % PbO |
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Oxygen 15.84 % O |
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______ ______ |
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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 |
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PDF 6-452 |
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Macedonite Image |
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Images:
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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 |
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Macedonite Crystallography
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| 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 Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.843(1), 1.603(0.9), 2.728(0.8), |
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Physical Properties of Macedonite
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| 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 |
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Optical Properties of Macedonite
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| Dichroism (e): |
brownish yellow. |
| Dichroism (w): |
brownish greenish yellow. |
| Optical Data: |
Uniaxial (?). |
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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
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| 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 |
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∑ R(λ) |
| 470 nm |
22.50 |
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| 490 nm |
22.20 |
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| 510 nm |
21.80 |
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| 530 nm |
21.20 |
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| 546 nm |
21.00 |
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| 570 nm |
20.90 |
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| 589 nm |
20.80 |
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| 610 nm |
20.60 |
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| 630 nm |
20.40 |
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| 650 nm |
20.20 |
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Calculated Relative Intensity Colors of Macedonite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
430% |
| R |
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Calculated Properties of Macedonite
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| Electron Density: |
Bulk Density (Electron Density)=6.68 gm/cc
note: Specific Gravity of Macedonite =7.91 gm/cc.
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| Fermion Index: |
Fermion Index = 0.17
Boson Index = 0.83 |
| Photoelectric: |
PEMacedonite =1,245.44 barns/electron
U=PEMacedonite x rElectron Density=8,321.19 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Macedonite is Not Radioactive |
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Macedonite Classification
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| Dana Class: |
04.03.06.01 (04)Simple Oxides |
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(04.03)with a cation charge of 3+ (A+++2 O3) |
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(04.03.06)Dana Group |
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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 |
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04.C - Metal:Oxygen = 2:3, 3:5, and Similar |
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04.CC -With large and medium-sized cations |
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04.CC.35 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m |
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04.CC.35 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m |
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04.CC.35 Macedonite PbTiO3 P 4/mmm 4/m 2/m 2/m |
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04.CC.35 Tausonite SrTiO3 P m3m 4/m 3 2/m |
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Other Macedonite Information
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| 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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Macedonite
PbTiO3
Dana No: 04.03.06.01 Strunz No: 04.CC.35
Locality:
Notes:
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