Salammoniac
Mineral NH4Cl
Also called Sal ammoniac
Take care.
- Damaged by water: Keep it dry: don't wash it, and keep it out of damp places.
About it
White crusts and skeletal crystals that form at volcanic vents and burning coal seams; salty-tasting and soluble in water. Known from Vesuvius, Etna, and burning coal dumps.
- Type
- Mineral
- Group
- Halide
- Formula
- NH4Cl
- Hardness (Mohs)
- 1–2
- Specific gravity
- 1.53
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Isometric (cubic)
- Colours
- colourless, white, yellowish
- Transparency
- transparent, translucent
- Cleavage and fracture
- imperfect octahedral; conchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.