Macedonite-Lead Titanate: A New Mineral

Dušan Radusinović; Cvetko Markov

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Other| April 01, 1971

Macedonite-Lead Titanate: A New Mineral

Dušan Radusinović;

Dušan Radusinović

Institute for Nuclear Raw Materials, Beogard, Yugoslavia

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Cvetko Markov

Institute for Nuclear Raw Materials, Beogard, Yugoslavia

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Author and Article Information

Dušan Radusinović

Institute for Nuclear Raw Materials, Beogard, Yugoslavia

Cvetko Markov

Institute for Nuclear Raw Materials, Beogard, Yugoslavia

Publisher: Mineralogical Society of America

Received: 05 Aug 1969

Accepted: 20 Jul 1970

First Online: 06 Jul 2018

Online ISSN: 1945-3027

Print ISSN: 0003-004X

Mineralogical Society of America

American Mineralogist (1971) 56 (3-4_Part_1): 387–394.

Abstract

Macedonite, PbTiO₃, occurs as tiny grains and crystals in the amazonite quartz syenite veins in Crni Kamen near Prilep, Macedonia, Yugoslavia. It is tetragonal: a, 3.889 ± 0.024 Å; c 4.209 ± 0.036 Å. The strongest X-ray powder diffraction lines are (Å): 2.843 (10), 2.728 (8), 2.284 (7), 1.954 (7), and 1.603 (9). Specific gravity is 7.82 Å 0.06. Microhardness is 507 Å 30 kg/mm² which corresponds to 5.5 on the Moh scale. Macedonite is soluble in warm HCl, HNO_s, and H₂SO₄. Chemical analysis: PbO 70.55%, Bi₂O₃ 2.20%, TiO₂ 25.07%, and FeO 2.69%. Macedonite is geneticaly related to the differentiation of an alkali syenitic magma and has been formed in the pegmatitic-pneumatolytic stage as an accessory mineral.