Jagoite

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]

Jagoite
Image of Jagoite
General
Category	Minerals
Formula	Pb2.4Na0.2Ca0.1Fe3+0.8Mg0.2Si3.1O10Cl0.8(OH)0.2
IMA symbol	Jg
Crystal system	Hexagonal
Identification
Color	Yellow-green
Cleavage	Perfect
Fracture	Flexible
Mohs scale hardness	3
Lustre	Vitreous
Streak	Yellow
Specific gravity	5.43
Density	5.43 g/cm3
Optical properties	Uniaxial (−)
Refractive index	nω = 2.000 nε = 1.970
Birefringence	0.030
Pleochroism	none
References	[1]

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

• Nekoite
• Jamborite