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Mineralpedia Details for Jagoite

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Jagoite

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
WebMineral
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Mindat
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Jagoite from Langban, Varmland, Sweden

Jagoite
            from Langban, Varmland, Sweden

Yellow platy micro crystals to less than 0.2mm.

Click thumbnail images for larger view.

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