Anthophyllite specimens for sale
2 for sale · $200–$380 USD
1 in the gallery
Anthophyllite is a magnesium-rich inosilicate that forms in metamorphic rocks under high-temperature conditions. It typically occurs as slender, prismatic to fibrous crystals with a vitreous to submetallic luster that can range from brown to greenish hues. The mineral’s often elongated habit and silky sheen make it recognizable in hand specimens, and it can be found in masses or as aggregates within schists and pyroxenites, sometimes intergrown with other amphibole minerals.
- Formula
- ◻{Mg2}{Mg5}(Si8O22)(OH)2
- Rarity
- Rare
- Stability
- Moderately Stable
- Collector interest
- Moderate Interest
- Classification notes
- Inosilicates; Amphiboles group (Mg-Fe amphibole)
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 5.5–6
- Specific gravity
- 2.85–3.2
- Luster
- vitreous, pearly
- Transparency
- translucent, opaque
- Color
- white, gray, brown, green
- Streak
- white, gray
- Cleavage
- perfect
- Fracture
- uneven, splintery
- Crystal habit
- prismatic, bladed, fibrous, radiating, granular, massive
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About Anthophyllite
Notable specimens have come from various metamorphic terranes worldwide, with European localities contributing historically important material. The Czech Republic is among the countries where anthophyllite crystals have been collected, reflecting its occurrence in regional metamorphic belts. Collectors value anthophyllite for its distinctive fibrous to acicular forms and its agreeable color palette, which contrasts with other amphiboles. Handling and storage should consider the mineral’s habit, as the slender crystals can be fragile yet are rewarding to study under magnification.