$75Median
3Sold (12 mo)
$155Last sale
Astrophyllite specimens for sale
2 for sale · $150–$750 USD
8 in the gallery
Astrophyllite is a complex potassium sodium iron titanium silicate that often forms radiating, needlelike or blade‑shaped aggregates. The mineral displays a dark to brownish hue with a distinct, often iridescent sheen that can shimmer in the light, adding depth to its silky to vitreous surfaces. Habit may include long, acicular crystals or cluster formations, with a lustre that ranges from vitreous to pearly in polished specimens.
- Formula
- K2NaFe2+7Ti2Si8O26(OH)4F
- Rarity
- Rare
- Stability
- Moderately Stable
- Collector interest
- Very High Interest
Buy Astrophyllite specimens
View all 2Where Astrophyllite is found
Top localities
- Kola Peninsula2 specimens
- Poudrette Quarry2 specimens
- Brevik1 specimen
- Colorado1 specimen
- Mont Saint-Hilaire1 specimen
About Astrophyllite
Notable specimens come from classic Russian localities and North American classic finds, where hydrothermally altered rocks and pegmatites have yielded striking astrophyllite associations. Collectors value well‑crystallized, iridescent specimens and those showing the characteristic starry or foliated textures formed by its fibrous crystal habit. The mineral’s rarity in pristine, undisturbed specimens and its dramatic visual effect when light plays across the surface make it a sought‑after piece for cabinet displays and mineral study.
