Strontianite
Mineral SrCO3
About it
Tufts of white to pale green needles and sprays, heavier than aragonite, that colour a flame crimson. Named for Strontian, Scotland, which also gave its name to the element strontium.
- Type
- Mineral
- Group
- Carbonate, aragonite group
- Formula
- SrCO3
- Hardness (Mohs)
- 3.5
- Specific gravity
- 3.74–3.78
- Streak
- white
- Lustre
- vitreous (glassy), resinous
- Crystal system
- Orthorhombic
- Colours
- colourless, white, grey, pale yellow, pale green, pale pink
- Transparency
- transparent, translucent
- Cleavage and fracture
- nearly perfect prismatic; uneven fracture
- Under UV light
- sometimes bluish white under UV
Typical values: real specimens vary. For more, see mindat.org.