Jagoite
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| Jagoite | |
|---|---|
| File:Jagoite.jpg 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] |
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]
Etymology
[edit | edit source]It is named after John B. Jago Trelawney, an American mineral collector.[3]
Properties
[edit | edit source]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
[edit | edit source]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
[edit | edit source]It is featured in Stardew Valley as a minor item obtained from geodes.
See also
[edit | edit source]References
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