About Prehnite
A calcium aluminum silicate, usually light green, often forming botryoidal or radiating aggregates. It's considered a stone of unconditional love and prophecy, known as the 'healer's stone,' fostering peace and preparedness.
Primary Hues
Light Green, Yellow-Green, White, Grey, Colorless
Geological & Scientific Details
Prehnite is classified as a silicate mineral mineral which typically crystallizes in the orthorhombic system. Its chemical formula is Ca2Al(AlSi3O10)(OH)2. Common crystal habits include globular, reniform to stalactitic.
Key Geological Properties:
- Mineral Category: Silicate mineral
- Chemical Formula: Ca2Al(AlSi3O10)(OH)2
- IMA Symbol: Prh[1]
- Crystal System: Orthorhombic
- Predominant Geological Color: Colorless to gray to yellow, yellow-green or white
- Crystal Habit: Globular, reniform to stalactitic
- Twinning: Fine lamellar
- Cleavage: Distinct on [001]
- Luster: Vitreous to pearly
- Streak: White
- Diaphaneity: Semi-transparent to translucent
Associated Minerals
- Calcite
- Apophyllite
- Quartz
- Epidote
- Zeolite
- Datolite
- Pumpellyite