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Margarosanite

- Formula
- Ca2PbSi3O9
- Crystal System
- Triclinic
- Crystal Habit
- Granular, Prismatic, Cleaveable
- Cleavage
- Perfect, Imperfect, Imperfect
- Luster
- Pearly
- Color
- colorless, pearl white
- Streak
- white
- Class
- Triclinic - Pinacoidal
- Hardness
- 2.5-3
- WebMineral
- View Margarosanite
- Mindat
- View Margarosanite
Margarosanite from Jakobsberg mine, Filipstad, Värmland, Sweden

This is a rich specimen with good coverage across the face. It is a rather nondescript greyish crusts which glows a bright blue color under shortwave UV. Margarosanite is a rather rare lead silicate found in a few places around the world: Langban, Harstigen, Franklin and this locality, Jakobsberg.
Click thumbnail images for larger view.