Laguna agate
Lapidary material SiO2
About it
Mexican agate with very fine, tightly packed, brightly coloured bands. Named for the Ojo Laguna area of Chihuahua, where it weathers out of volcanic rock.
- Type
- Lapidary material
- Group
- Agate (chalcedony)
- Formula
- SiO2
- Hardness (Mohs)
- 6.5–7
- Specific gravity
- 2.57–2.64
- Streak
- white
- Lustre
- waxy, vitreous (glassy)
- Crystal system
- Trigonal
- Colours
- red, orange, pink, purple, yellow, white
- Transparency
- translucent, opaque
- Cleavage and fracture
- none; conchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.