Jagoite

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

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.

Etymology

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

Properties

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

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

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.

Media appearances

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

See also

References

  1. ↑ "Jagoite".
  2. ↑ Blix, Gabrielson, Wickman (1958). Jagoite, a new lead-silicate mineral from Långban in Sweden (2 ed.). Stockholm: Arkiv för Mineralogi och Geologi. pp. 315–317.{{cite book}}: CS1 maint: multiple names: authors list (link)
  3. ↑ "Jagoite Mineral Data". webmineral.com. Retrieved 2025-03-12.
  4. ↑ "Jagoite". www.mindat.org. Retrieved 2025-03-12.
  5. 1 2 Minerals, Dakota Matrix. "Jagoite mineral information and data". www.dakotamatrix.com. Retrieved 2025-03-12.
  6. ↑ "Jagoite" (PDF). Handbook of Mineralogy.
  7. ↑ "ATHENA MINERAL: Mineral Data; Pierre Perroud". athena.unige.ch. Retrieved 2025-03-12.