Thermonatrite
Mineral Na2CO3·H2O
Take care.
- Damaged by water: Keep it dry: don't wash it, and keep it out of damp places.
About it
White powdery crusts and small crystals of soda around salt lakes and volcanic vents, often formed as natron dries out. Dissolves readily in water; known from Searles Lake, California.
- Type
- Mineral
- Group
- Carbonate
- Formula
- Na2CO3·H2O
- Hardness (Mohs)
- 1–1.5
- Specific gravity
- 2.25–2.26
- Streak
- white
- Lustre
- vitreous (glassy), dull
- Crystal system
- Orthorhombic
- Colours
- colourless, white, grey, yellowish
- Transparency
- transparent, translucent
- Cleavage and fracture
- indistinct
Typical values: real specimens vary. For more, see mindat.org.