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Jagoite

Named after John Bernard Jago Trelawney, who was an American mineral collector from California, USA and was a great benefactor of mineral collections. Jagoite is a rare mineral that occurs in hematite ore in metamorphosed iron-manganese orebodies in only one locality in the world at Langban in Sweden. Associated minerals include melanotekite and quartz.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/jagoite.pdf
- Formula
- (Pb,Na)3(Fe3+,Mg)Si3O10(Cl,OH)
- Crystal System
- Hexagonal
- Crystal Habit
- Micaceous, Aggregates
- Cleavage
- Perfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- yellow green
- Streak
- yellow
- Class
- Hexagonal - Ditrigonal Dipyramidal
- Fracture
- Flexible
- Hardness
- 3
- WebMineral
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Jagoite from Langban, Varmland, Sweden

Yellow platy micro crystals to less than 0.2mm.