Wardite
Mineral NaAl3(PO4)2(OH)4·2H2O
About it
Colourless to pale green pyramidal crystals in phosphate nodules and pegmatites, with good crystals from Rapid Creek in the Yukon. Also forms crusts in Utah variscite nodules.
- Type
- Mineral
- Group
- Phosphate
- Formula
- NaAl3(PO4)2(OH)4·2H2O
- Hardness (Mohs)
- 5
- Specific gravity
- 2.8–2.85
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Tetragonal
- Colours
- colourless, white, pale green, bluish green
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect basal
Typical values: real specimens vary. For more, see mindat.org.