Jagoite

From Wikipedia, the free encyclopedia

Jagoite is a hexagonal-ditrigonal, dipyramidal, yellow-green lead-silicate mineral consisting of calcium, chlorine, hydrogen, iron, lead, magnesium, oxygen, silicon, and sodium. Its discovery was first published in 1957.[2]

CategoryMinerals
FormulaPb2.4Na0.2Ca0.1Fe3+0.8Mg0.2Si3.1O10Cl0.8(OH)0.2
IMA symbolJg
Crystal systemHexagonal
Quick facts General, Category ...
Jagoite
Image of Jagoite
General
CategoryMinerals
FormulaPb2.4Na0.2Ca0.1Fe3+0.8Mg0.2Si3.1O10Cl0.8(OH)0.2
IMA symbolJg
Crystal systemHexagonal
Identification
ColorYellow-green
CleavagePerfect
FractureFlexible
Mohs scale hardness3
LustreVitreous
StreakYellow
Specific gravity5.43
Density5.43 g/cm3
Optical propertiesUniaxial (−)
Refractive indexnω = 2.000 nε = 1.970
Birefringence0.030
Pleochroismnone
References[1]
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Etymology

It is named after John B. Jago Trelawney, an American mineral collector.[3]

Properties

It is said to have a vitreous (glass-like) lustre.[4]

Jagoite is composed of tiny yellow crystals that span less than 0.2mm.[5]

Distribution

This rare mineral is located in Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden, found inside hematite ore. It is also associated with Melanotekite and Quartz.[6][7][5]

Media appearances

It is featured in Stardew Valley as a minor item obtained from geodes.

See also

References

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