Mineralpedia Details for Prehnite
Prehnite
- Formula
- Ca2Al(Si3Al)O10(OH)2
- Crystal System
- Orthorhombic
- Crystal Habit
- Reniform, Globular, Stalactitic
- Cleavage
- Distinct, None, None
- Luster
- Vitreous - Pearly
- Color
- colorless, gray, yellow, yellow green, white
- Streak
- colorless
- Class
- Orthorhombic - Pyramidal
- Fracture
- Brittle
- Hardness
- 6-6.5
- WebMineral
- View Prehnite
- Mindat
- View Prehnite
Prehnite from O & G Woodbury Quarry, Litchfield Co., Connecticut, United States
Large specimen of light green, botryoidal habit Prehnite.
Click thumbnail images for larger view.
Prehnite from La Combe de la Selle, Isère, Rhône-Alpes, France
Deep bottle green, glassy rounded crystals to 1cm.
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