Macedonite

General
Category| Mineral
Formula
(repeating unit)| PbTiO3
Strunz classification| 4.CC.35
Dana classification| 4.3.6.1
Crystal system| Tetragonal
Space group| P4/nmm
Unit cell| a = 3.90 Å, c = 4.18 Å Z=1 V=63.58 Å3
Structure
Identification
Colour| black
Tenacity| very brittle
Mohs scale hardness| 6
|re|er}}| vitreous
Diaphaneity| opaque
Specific gravity| 7.82
Optical properties| Uniaxial

Macedonite is a mineral named by Radusinović and Markov in 1971. It has the elemental formula PbTiO3 and exhibits tetragonal crystal system. The type locality is near Crni Kamen, Selecka Planina, Prilep Municipality, North Macedonia. It can be confused with perovskite. It is found in an amazonite-rich area.[2]

## Fame

Lead titanate, which is the premier piezoelectric material, had not been previously reported in the wild.[2]

## References

1. ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85: 291–320. https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A.
2. ↑ 2.0 2.1 Radusinović, D. and C. Markov (1971) Macedonite - lead titanate: a new mineral". American Mineralogist: 56: 387-394

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