Larimar
Real mineral · rare · NaCa₂Si₃O₈(OH)
A blue variety of pectolite found only in a single locality in the Dominican Republic. Its sky-blue colour results from copper substituting for calcium. Formed in cavities of volcanic basalt flows.
Identity
- Formula
- NaCa₂Si₃O₈(OH)
- Chemical class
- silicate
- Also known as
- Blue pectolite, Stefilia's stone, Dolphin stone
Crystallography
- Crystal system
- triclinic
- Habits
- massive, fibrous
- Fracture
- splintery
Physical properties
- Mohs hardness
- 5
- Density
- 2.86 g/cm³
- Luster
- vitreous, silky
- Colors
- sky blue, blue, blue-green, white
- Streak
- white
- Transparency
- opaque, translucent
Geology
- Origins
- volcanic
- Host rocks
- basalt
- Associated minerals
- Calcite, Hematite
- Geography
- Dominican Republic (Sierra de Bahoruco only)
Classification
- Rarity
- rare
- Gem quality
- Yes
Arcane properties
- Affinity
- water, air
- Effects
- healing, mind
- Planar origin
- Material Plane
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