Second occurrence of makedonite, PbTiO 3, Långban, Sweden
Abstract
Makedonite, natural PbTiO 3, occurs included in hematite and magnetoplumbite at Långban, Sweden. Electron microprobe analysis yielded PbO 74.5(5) wt. %, FeO 1.0(5), TiO 2 24.5(5), = 100.1(5)%. The mineral is tetragonal with a= 3.91±0.01, c=4.16±0.01 Å. Micro-indentation hardness (load 100 g)=606-681 kg/mm 2; reflectance 22.5% (470 nm), 21.0 (546 nm), 20.8 (589 nm), 20.2 (650 nm).
- Publication:
-
Lithos
- Pub Date:
- 1971
- DOI:
- 10.1016/0024-4937(71)90102-2
- Bibcode:
- 1971Litho...4..101B