Morenosite
Mineral NiSO4·7H2O
Take care.
- Damaged by water: Keep it dry: don't wash it, and keep it out of damp places.
- Breaks down in damp air: Keep it dry and in steady humidity; some crumble or rot as they take on moisture.
- Toxic: Wash your hands after handling it, don't lick or taste it, and don't make dust.
About it
Green crusts and fibres of nickel sulfate formed where nickel ores weather in mines. Dissolves in water, loses water in dry air, and nickel salts irritate skin, so handle it with care.
- Type
- Mineral
- Group
- Sulfate, epsomite group
- Formula
- NiSO4·7H2O
- Hardness (Mohs)
- 2–2.5
- Specific gravity
- 1.95–1.98
- Streak
- white
- Lustre
- vitreous (glassy), silky, earthy
- Crystal system
- Orthorhombic
- Colours
- apple green, green, greenish white
- Transparency
- transparent, translucent
- Cleavage and fracture
- good in one direction
Typical values: real specimens vary. For more, see mindat.org.