Silicate Mineral (Phyllosilicate)

Okenite

The Cotton Ball Crystal

Snow White
Pale Blue-White

Quick Facts

FormulaCaSi₂O₅·2H₂O
SystemTriclinic
LusterVitreous (individual fibers) to Silky (aggregates)
StreakWhite
TransparencyTranslucent
Sp. Gravity2.28-2.33
Mohs Hardness
4.5

Formation & Origin

Okenite forms as a secondary mineral in basalt cavities (vesicles), deposited by hydrothermal fluids at relatively low temperatures (below 200°C). It grows as extremely fine, hair-like crystal fibers that bundle together into soft, fuzzy spherical aggregates resembling cotton balls or snowballs.

The most spectacular specimens come from India's Deccan Traps, a massive basaltic lava province covering much of western India. As these ancient lavas cooled, gas bubbles were trapped, creating cavities. Over millions of years, hot groundwater circulated through these cavities, depositing zeolite minerals and okenite.

Okenite often grows alongside gyrolite, apophyllite, and various zeolites, creating stunning miniature crystal gardens within basalt geodes. The delicate fiber aggregates form last in the mineral sequence, sitting on top of earlier-formed minerals.

Identification Guide

Okenite's distinctive cotton-ball appearance is unmistakable. The white, fuzzy spherical aggregates of extremely fine crystal fibers look exactly like small snowballs or cotton balls sitting in basalt cavities. No other mineral forms quite like this.

Distinguish from mesolite (straight needle-like crystals rather than fuzzy balls), thomsonite (more compact, radiating crystals), and actual cotton or synthetic fibers (okenite is a mineral and won't burn like organic fibers). Handle with extreme care: the delicate fibers are easily damaged.

Spotting Fakes

Okenite is not commonly faked. The main concern is damage. Because the crystal fibers are so delicate, handling damages specimens quickly. Collectors prize pieces with intact, fluffy, undamaged cotton-ball formations. Compressed, matted, or yellowish specimens have been damaged or improperly stored. Never touch okenite with bare hands, as oils from skin will mat the fibers permanently.

Cultural & Metaphysical Traditions

Presented as cultural traditions, not scientific evidence

Okenite is associated with purity, truth, and self-forgiveness in crystal healing. Its soft, gentle appearance connects it to themes of tenderness and compassion. Practitioners sometimes call it a 'truth stone' believed to help release denial and accept difficult truths with grace. The delicate nature of the mineral reinforces lessons about treating precious things (and people) with care.

Where It's Found

India - Pune (Poona), Maharashtra (Deccan Traps)

World's premier source for cotton-ball formations

Iceland - Various

Basaltic cavity specimens

Chile - Atacama

Specimens from copper mining areas

Greenland - Disko Island

Original discovery locality

Price Guide

Entry$20-60 small specimens
Mid-Range$60-200 fine cotton-ball formations
Collector$200-1,000+ pristine large specimens

Good to Know

💎

Scratch test: At hardness 4.5, Okenite can be scratched with a copper coin. Handle gently and keep away from harder stones in your collection.

🌍

Sources: Found in 4 notable locations worldwide, from India to Greenland.

⚖️

Heft test: With a specific gravity of 2.28-2.33, Okenite feels lighter than most minerals. This lightness can help identify it.