Macedonite

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, Macedonia. It can be confused with perovskite. It is found in an amazonite-rich area.^[2]

Macedonite
General
Category	Minerals
Formula	PbTiO3
IMA symbol	Mce[1]
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
Luster	vitreous
Diaphaneity	opaque
Specific gravity	7.82
Optical properties	Uniaxial

Fame

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